./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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 72a09b82a82aabea0c4a084a3d99a9a83ff3f66f3965fc10414482ebb802703c --- 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 07:24:45,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:24:45,614 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:24:45,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:24:45,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:24:45,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:24:45,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:24:45,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:24:45,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:24:45,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:24:45,644 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:24:45,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:24:45,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:24:45,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:24:45,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:24:45,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:24:45,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:24:45,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:24:45,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:24:45,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:24:45,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:24:45,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:24:45,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:24:45,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:24:45,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:24:45,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:24:45,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:24:45,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:24:45,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:24:45,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:24:45,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:24:45,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:24:45,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:24:45,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:24:45,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:24:45,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:24:45,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:24:45,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:24:45,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:24:45,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:24:45,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:24:45,677 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:24:45,713 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:24:45,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:24:45,721 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:24:45,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:24:45,722 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:24:45,723 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:24:45,723 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:24:45,723 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:24:45,723 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:24:45,724 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:24:45,725 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:24:45,725 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:24:45,725 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:24:45,725 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:24:45,725 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:24:45,726 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:24:45,726 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:24:45,726 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:24:45,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:24:45,727 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:24:45,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:24:45,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:24:45,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:24:45,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:24:45,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:24:45,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:24:45,729 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:24:45,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:24:45,729 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:24:45,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:24:45,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:24:45,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:24:45,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:24:45,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:24:45,731 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:24:45,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:24:45,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:24:45,731 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:24:45,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:24:45,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:24:45,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:24:45,732 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_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a09b82a82aabea0c4a084a3d99a9a83ff3f66f3965fc10414482ebb802703c [2022-11-19 07:24:46,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:24:46,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:24:46,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:24:46,039 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:24:46,040 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:24:46,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2022-11-19 07:24:46,105 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/data/942d6e8a4/287103afab444b5eb58f060f609468b0/FLAG14a356a35 [2022-11-19 07:24:46,649 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:24:46,652 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2022-11-19 07:24:46,669 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/data/942d6e8a4/287103afab444b5eb58f060f609468b0/FLAG14a356a35 [2022-11-19 07:24:47,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/data/942d6e8a4/287103afab444b5eb58f060f609468b0 [2022-11-19 07:24:47,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:24:47,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:24:47,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:24:47,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:24:47,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:24:47,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40a10cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47, skipping insertion in model container [2022-11-19 07:24:47,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,029 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:24:47,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:24:47,282 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_3e28b753-9ce4-48b3-8908-8d7436eb02ed/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2022-11-19 07:24:47,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:24:47,295 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:24:47,322 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_3e28b753-9ce4-48b3-8908-8d7436eb02ed/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2022-11-19 07:24:47,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:24:47,336 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:24:47,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47 WrapperNode [2022-11-19 07:24:47,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:24:47,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:24:47,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:24:47,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:24:47,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,406 INFO L138 Inliner]: procedures = 16, calls = 48, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 145 [2022-11-19 07:24:47,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:24:47,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:24:47,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:24:47,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:24:47,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,436 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,442 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,445 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,446 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:24:47,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:24:47,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:24:47,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:24:47,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47" (1/1) ... [2022-11-19 07:24:47,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:24:47,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:24:47,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:24:47,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:24:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:24:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:24:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:24:47,527 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-11-19 07:24:47,528 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-11-19 07:24:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-19 07:24:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:24:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-19 07:24:47,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:24:47,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:24:47,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:24:47,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:24:47,613 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:24:47,615 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:24:47,992 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:24:48,023 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:24:48,034 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-19 07:24:48,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:24:48 BoogieIcfgContainer [2022-11-19 07:24:48,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:24:48,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:24:48,040 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:24:48,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:24:48,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:24:47" (1/3) ... [2022-11-19 07:24:48,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1038254e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:24:48, skipping insertion in model container [2022-11-19 07:24:48,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:47" (2/3) ... [2022-11-19 07:24:48,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1038254e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:24:48, skipping insertion in model container [2022-11-19 07:24:48,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:24:48" (3/3) ... [2022-11-19 07:24:48,047 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2022-11-19 07:24:48,070 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:24:48,070 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:24:48,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:24:48,160 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;@3cc60bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:24:48,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:24:48,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 32 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:24:48,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-19 07:24:48,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:24:48,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:24:48,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:24:48,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:24:48,183 INFO L85 PathProgramCache]: Analyzing trace with hash 980551628, now seen corresponding path program 1 times [2022-11-19 07:24:48,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:24:48,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930297395] [2022-11-19 07:24:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:24:48,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:24:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:24:48,421 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 07:24:48,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:24:48,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930297395] [2022-11-19 07:24:48,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930297395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:24:48,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:24:48,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:24:48,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29324697] [2022-11-19 07:24:48,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:24:48,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:24:48,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:24:48,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:24:48,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:24:48,467 INFO L87 Difference]: Start difference. First operand has 36 states, 31 states have (on average 1.6451612903225807) internal successors, (51), 32 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:24:48,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:24:48,516 INFO L93 Difference]: Finished difference Result 71 states and 109 transitions. [2022-11-19 07:24:48,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:24:48,519 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-19 07:24:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:24:48,531 INFO L225 Difference]: With dead ends: 71 [2022-11-19 07:24:48,531 INFO L226 Difference]: Without dead ends: 34 [2022-11-19 07:24:48,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:24:48,540 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:24:48,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:24:48,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-19 07:24:48,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-19 07:24:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:24:48,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-11-19 07:24:48,590 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 15 [2022-11-19 07:24:48,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:24:48,590 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-11-19 07:24:48,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:24:48,593 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-11-19 07:24:48,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:24:48,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:24:48,597 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:24:48,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:24:48,599 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:24:48,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:24:48,600 INFO L85 PathProgramCache]: Analyzing trace with hash -868093747, now seen corresponding path program 1 times [2022-11-19 07:24:48,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:24:48,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059970689] [2022-11-19 07:24:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:24:48,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:24:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:24:48,827 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 07:24:48,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:24:48,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059970689] [2022-11-19 07:24:48,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059970689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:24:48,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:24:48,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:24:48,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392654434] [2022-11-19 07:24:48,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:24:48,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:24:48,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:24:48,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:24:48,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:24:48,830 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:24:48,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:24:48,850 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2022-11-19 07:24:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:24:48,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-19 07:24:48,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:24:48,852 INFO L225 Difference]: With dead ends: 37 [2022-11-19 07:24:48,852 INFO L226 Difference]: Without dead ends: 34 [2022-11-19 07:24:48,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:24:48,854 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:24:48,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:24:48,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-19 07:24:48,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-11-19 07:24:48,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:24:48,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2022-11-19 07:24:48,860 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 17 [2022-11-19 07:24:48,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:24:48,862 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2022-11-19 07:24:48,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:24:48,862 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2022-11-19 07:24:48,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-19 07:24:48,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:24:48,863 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:24:48,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:24:48,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:24:48,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:24:48,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1131488603, now seen corresponding path program 1 times [2022-11-19 07:24:48,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:24:48,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579842118] [2022-11-19 07:24:48,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:24:48,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:24:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:24:48,914 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 07:24:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 07:24:48,967 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 07:24:48,968 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 07:24:48,969 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:24:48,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:24:48,974 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-19 07:24:48,978 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:24:49,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:24:49 BoogieIcfgContainer [2022-11-19 07:24:49,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:24:49,009 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:24:49,010 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:24:49,010 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:24:49,010 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:24:48" (3/4) ... [2022-11-19 07:24:49,014 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 07:24:49,014 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:24:49,015 INFO L158 Benchmark]: Toolchain (without parser) took 2008.07ms. Allocated memory is still 142.6MB. Free memory was 110.0MB in the beginning and 101.1MB in the end (delta: 9.0MB). Peak memory consumption was 9.0MB. Max. memory is 16.1GB. [2022-11-19 07:24:49,015 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 88.1MB. Free memory is still 44.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:24:49,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 329.26ms. Allocated memory is still 142.6MB. Free memory was 109.6MB in the beginning and 116.3MB in the end (delta: -6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:24:49,016 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.08ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 114.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:24:49,017 INFO L158 Benchmark]: Boogie Preprocessor took 40.70ms. Allocated memory is still 142.6MB. Free memory was 114.2MB in the beginning and 112.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:24:49,017 INFO L158 Benchmark]: RCFGBuilder took 587.95ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 95.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 07:24:49,018 INFO L158 Benchmark]: TraceAbstraction took 969.40ms. Allocated memory is still 142.6MB. Free memory was 95.0MB in the beginning and 101.1MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:24:49,018 INFO L158 Benchmark]: Witness Printer took 4.43ms. Allocated memory is still 142.6MB. Free memory is still 101.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:24:49,020 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 88.1MB. Free memory is still 44.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 329.26ms. Allocated memory is still 142.6MB. Free memory was 109.6MB in the beginning and 116.3MB in the end (delta: -6.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.08ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 114.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.70ms. Allocated memory is still 142.6MB. Free memory was 114.2MB in the beginning and 112.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 587.95ms. Allocated memory is still 142.6MB. Free memory was 112.5MB in the beginning and 95.8MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 969.40ms. Allocated memory is still 142.6MB. Free memory was 95.0MB in the beginning and 101.1MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.43ms. Allocated memory is still 142.6MB. Free memory is still 101.1MB. 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: 88]: 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 75, overapproximation of someBinaryArithmeticFLOAToperation at line 82, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L13] static const float one_modf = 1.0; [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L84] CALL, EXPR modf_float(x, &iptr) [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [\old(x)=4294967319, iptr={6:0}, iptr={6:0}, one_modf=1, x=4294967319] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=4294967319, i0=8, iptr={6:0}, iptr={6:0}, j0=-127, one_modf=1, x=4294967319] [L24] COND TRUE j0 < 23 VAL [\old(x)=4294967319, i0=8, iptr={6:0}, iptr={6:0}, j0=-127, one_modf=1, x=4294967319] [L25] COND TRUE j0 < 0 VAL [\old(x)=4294967319, i0=8, iptr={6:0}, iptr={6:0}, j0=-127, one_modf=1, x=4294967319] [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = (i0 & 0x80000000) [L29] EXPR sf_u.value [L29] (*iptr) = sf_u.value [L31] return x; VAL [\old(x)=4294967319, \result=4294967319, i0=8, iptr={6:0}, iptr={6:0}, j0=-127, one_modf=1, x=4294967319] [L84] RET, EXPR modf_float(x, &iptr) [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) VAL [\read(iptr)=4294967318, iptr={6:0}, one_modf=1, res=4294967319, x=4294967319] [L87] CALL, EXPR isnan_float(iptr) VAL [\old(x)=4294967318, one_modf=1] [L75] return x != x; [L87] RET, EXPR isnan_float(iptr) VAL [\read(iptr)=4294967318, iptr={6:0}, isnan_float(iptr)=1, one_modf=1, res=4294967319, x=4294967319] [L87] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=4294967318, iptr={6:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1, res=4294967319, x=4294967319] [L87] CALL, EXPR isnan_float(res) VAL [\old(x)=4294967319, one_modf=1] [L75] return x != x; [L87] RET, EXPR isnan_float(res) VAL [\read(iptr)=4294967318, iptr={6:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=4294967319, x=4294967319] [L87] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=4294967318, iptr={6:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=4294967319, x=4294967319] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L88] reach_error() VAL [iptr={6:0}, one_modf=1, res=4294967319, x=4294967319] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 104 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 73 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 31 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 07:24:49,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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 72a09b82a82aabea0c4a084a3d99a9a83ff3f66f3965fc10414482ebb802703c --- 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 07:24:51,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:24:51,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:24:51,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:24:51,393 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:24:51,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:24:51,396 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:24:51,398 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:24:51,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:24:51,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:24:51,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:24:51,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:24:51,404 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:24:51,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:24:51,406 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:24:51,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:24:51,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:24:51,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:24:51,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:24:51,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:24:51,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:24:51,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:24:51,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:24:51,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:24:51,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:24:51,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:24:51,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:24:51,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:24:51,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:24:51,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:24:51,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:24:51,451 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:24:51,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:24:51,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:24:51,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:24:51,454 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:24:51,455 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:24:51,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:24:51,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:24:51,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:24:51,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:24:51,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 07:24:51,498 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:24:51,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:24:51,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:24:51,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:24:51,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:24:51,502 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:24:51,503 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:24:51,503 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:24:51,503 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:24:51,503 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:24:51,504 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:24:51,505 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:24:51,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:24:51,506 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:24:51,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:24:51,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:24:51,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:24:51,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:24:51,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:24:51,508 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 07:24:51,508 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 07:24:51,508 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 07:24:51,508 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:24:51,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:24:51,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:24:51,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:24:51,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:24:51,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 07:24:51,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:24:51,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:24:51,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:24:51,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:24:51,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:24:51,511 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 07:24:51,511 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 07:24:51,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:24:51,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:24:51,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 07:24:51,512 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_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72a09b82a82aabea0c4a084a3d99a9a83ff3f66f3965fc10414482ebb802703c [2022-11-19 07:24:51,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:24:51,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:24:51,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:24:51,975 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:24:51,976 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:24:51,978 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2022-11-19 07:24:52,053 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/data/bff26d56c/f0d28870412848b08f4f62a468aa7e0f/FLAG47f8650ab [2022-11-19 07:24:52,633 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:24:52,634 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2022-11-19 07:24:52,643 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/data/bff26d56c/f0d28870412848b08f4f62a468aa7e0f/FLAG47f8650ab [2022-11-19 07:24:52,973 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/data/bff26d56c/f0d28870412848b08f4f62a468aa7e0f [2022-11-19 07:24:52,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:24:52,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:24:52,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:24:52,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:24:52,993 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:24:52,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:24:52" (1/1) ... [2022-11-19 07:24:52,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1270ce04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:52, skipping insertion in model container [2022-11-19 07:24:52,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:24:52" (1/1) ... [2022-11-19 07:24:53,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:24:53,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:24:53,201 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_3e28b753-9ce4-48b3-8908-8d7436eb02ed/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2022-11-19 07:24:53,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:24:53,221 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:24:53,292 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_3e28b753-9ce4-48b3-8908-8d7436eb02ed/sv-benchmarks/c/float-newlib/float_req_bl_1210.c[2159,2172] [2022-11-19 07:24:53,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:24:53,312 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:24:53,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53 WrapperNode [2022-11-19 07:24:53,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:24:53,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:24:53,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:24:53,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:24:53,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,382 INFO L138 Inliner]: procedures = 19, calls = 48, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 144 [2022-11-19 07:24:53,382 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:24:53,383 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:24:53,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:24:53,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:24:53,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,430 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:24:53,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:24:53,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:24:53,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:24:53,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (1/1) ... [2022-11-19 07:24:53,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:24:53,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:24:53,495 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:24:53,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:24:53,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:24:53,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 07:24:53,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:24:53,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-11-19 07:24:53,546 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-11-19 07:24:53,546 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-11-19 07:24:53,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 07:24:53,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:24:53,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:24:53,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-19 07:24:53,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-19 07:24:53,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:24:53,671 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:24:53,674 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:24:54,242 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:24:54,248 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:24:54,248 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-19 07:24:54,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:24:54 BoogieIcfgContainer [2022-11-19 07:24:54,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:24:54,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:24:54,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:24:54,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:24:54,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:24:52" (1/3) ... [2022-11-19 07:24:54,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679a3e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:24:54, skipping insertion in model container [2022-11-19 07:24:54,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:24:53" (2/3) ... [2022-11-19 07:24:54,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@679a3e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:24:54, skipping insertion in model container [2022-11-19 07:24:54,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:24:54" (3/3) ... [2022-11-19 07:24:54,268 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2022-11-19 07:24:54,287 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:24:54,287 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:24:54,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:24:54,342 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;@592ce8c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:24:54,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:24:54,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 34 states have (on average 1.588235294117647) internal successors, (54), 35 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:24:54,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:24:54,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:24:54,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:24:54,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:24:54,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:24:54,362 INFO L85 PathProgramCache]: Analyzing trace with hash -218345182, now seen corresponding path program 1 times [2022-11-19 07:24:54,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 07:24:54,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957808064] [2022-11-19 07:24:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:24:54,376 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 07:24:54,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 07:24:54,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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 07:24:54,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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 07:24:54,572 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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)] Exception during sending of exit command (exit): Broken pipe [2022-11-19 07:24:54,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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)] Forceful destruction successful, exit code 139 [2022-11-19 07:24:54,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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 07:24:54,773 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-11-19 07:24:54,778 INFO L158 Benchmark]: Toolchain (without parser) took 1799.29ms. Allocated memory is still 67.1MB. Free memory was 47.2MB in the beginning and 38.4MB in the end (delta: 8.7MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2022-11-19 07:24:54,779 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 67.1MB. Free memory was 47.8MB in the beginning and 47.8MB in the end (delta: 32.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:24:54,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.10ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 49.1MB in the end (delta: -2.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 07:24:54,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.94ms. Allocated memory is still 67.1MB. Free memory was 49.1MB in the beginning and 47.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:24:54,780 INFO L158 Benchmark]: Boogie Preprocessor took 64.52ms. Allocated memory is still 67.1MB. Free memory was 47.3MB in the beginning and 45.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:24:54,781 INFO L158 Benchmark]: RCFGBuilder took 802.17ms. Allocated memory is still 67.1MB. Free memory was 45.4MB in the beginning and 29.1MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 07:24:54,781 INFO L158 Benchmark]: TraceAbstraction took 523.47ms. Allocated memory is still 67.1MB. Free memory was 28.4MB in the beginning and 38.4MB in the end (delta: -10.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:24:54,784 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 67.1MB. Free memory was 47.8MB in the beginning and 47.8MB in the end (delta: 32.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.10ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 49.1MB in the end (delta: -2.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.94ms. Allocated memory is still 67.1MB. Free memory was 49.1MB in the beginning and 47.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 64.52ms. Allocated memory is still 67.1MB. Free memory was 47.3MB in the beginning and 45.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 802.17ms. Allocated memory is still 67.1MB. Free memory was 45.4MB in the beginning and 29.1MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 523.47ms. Allocated memory is still 67.1MB. Free memory was 28.4MB in the beginning and 38.4MB in the end (delta: -10.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 07:24:54,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e28b753-9ce4-48b3-8908-8d7436eb02ed/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) with exit command (exit)) Received EOF on stdin. No stderr output.