./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5c5b05c4ae88eb6dc9b39e487669b31df0ffdcd18c2998e1a9c5cebc84002587 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:12:00,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:12:00,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:12:00,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:12:00,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:12:00,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:12:00,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:12:00,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:12:00,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:12:00,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:12:00,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:12:00,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:12:00,784 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:12:00,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:12:00,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:12:00,786 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:12:00,787 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:12:00,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:12:00,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:12:00,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:12:00,791 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:12:00,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:12:00,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:12:00,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:12:00,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:12:00,795 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:12:00,795 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:12:00,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:12:00,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:12:00,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:12:00,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:12:00,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:12:00,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:12:00,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:12:00,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:12:00,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:12:00,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:12:00,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:12:00,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:12:00,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:12:00,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:12:00,801 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:12:00,817 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:12:00,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:12:00,818 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:12:00,818 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:12:00,818 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:12:00,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:12:00,818 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:12:00,819 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:12:00,826 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:12:00,826 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:12:00,826 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:12:00,826 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:12:00,827 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:12:00,827 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:12:00,827 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:12:00,827 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:12:00,827 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:12:00,828 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:12:00,828 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:12:00,828 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:12:00,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:12:00,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:12:00,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:12:00,829 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:12:00,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:12:00,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:12:00,829 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:12:00,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:12:00,830 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:12:00,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:12:00,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:12:00,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:12:00,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:12:00,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:12:00,831 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:12:00,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:12:00,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:12:00,831 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:12:00,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:12:00,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:12:00,832 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:12:00,832 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_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c5b05c4ae88eb6dc9b39e487669b31df0ffdcd18c2998e1a9c5cebc84002587 [2022-12-14 13:12:00,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:12:01,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:12:01,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:12:01,020 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:12:01,020 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:12:01,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c [2022-12-14 13:12:03,568 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:12:03,711 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:12:03,712 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c [2022-12-14 13:12:03,716 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/data/debe4bff9/98b2d79644e04c0ca1219973d6525a78/FLAGceb5c1080 [2022-12-14 13:12:04,125 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/data/debe4bff9/98b2d79644e04c0ca1219973d6525a78 [2022-12-14 13:12:04,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:12:04,128 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:12:04,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:12:04,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:12:04,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:12:04,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:12:04" (1/1) ... [2022-12-14 13:12:04,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5a3726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:04, skipping insertion in model container [2022-12-14 13:12:04,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:12:04" (1/1) ... [2022-12-14 13:12:04,138 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:12:04,149 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:12:04,257 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c[1455,1468] [2022-12-14 13:12:04,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:12:04,268 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:12:04,283 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c[1455,1468] [2022-12-14 13:12:04,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:12:04,295 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:12:04,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:04 WrapperNode [2022-12-14 13:12:04,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:12:04,296 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:12:04,296 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:12:04,296 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:12:04,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:04" (1/1) ... [2022-12-14 13:12:04,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:04" (1/1) ... [2022-12-14 13:12:04,321 INFO L138 Inliner]: procedures = 18, calls = 55, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 131 [2022-12-14 13:12:04,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:12:04,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:12:04,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:12:04,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:12:04,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:04" (1/1) ... [2022-12-14 13:12:04,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:04" (1/1) ... [2022-12-14 13:12:04,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:04" (1/1) ... [2022-12-14 13:12:04,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:04" (1/1) ... [2022-12-14 13:12:04,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:04" (1/1) ... [2022-12-14 13:12:04,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:04" (1/1) ... [2022-12-14 13:12:04,338 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:04" (1/1) ... [2022-12-14 13:12:04,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:04" (1/1) ... [2022-12-14 13:12:04,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:12:04,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:12:04,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:12:04,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:12:04,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:04" (1/1) ... [2022-12-14 13:12:04,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:12:04,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:12:04,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:12:04,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:12:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:12:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:12:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:12:04,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-12-14 13:12:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:12:04,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:12:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-12-14 13:12:04,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:12:04,449 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:12:04,450 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:12:04,570 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:12:04,582 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:12:04,583 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 13:12:04,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:12:04 BoogieIcfgContainer [2022-12-14 13:12:04,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:12:04,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:12:04,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:12:04,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:12:04,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:12:04" (1/3) ... [2022-12-14 13:12:04,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dc36b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:12:04, skipping insertion in model container [2022-12-14 13:12:04,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:04" (2/3) ... [2022-12-14 13:12:04,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33dc36b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:12:04, skipping insertion in model container [2022-12-14 13:12:04,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:12:04" (3/3) ... [2022-12-14 13:12:04,592 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation2.c.p+cfa-reducer.c [2022-12-14 13:12:04,608 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:12:04,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:12:04,644 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:12:04,650 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;@f932f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:12:04,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:12:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:12:04,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 13:12:04,659 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:12:04,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:12:04,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:12:04,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:12:04,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1338621212, now seen corresponding path program 1 times [2022-12-14 13:12:04,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:12:04,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538043322] [2022-12-14 13:12:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:12:04,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:12:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:12:04,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:12:04,915 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:12:04,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538043322] [2022-12-14 13:12:04,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538043322] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:12:04,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:12:04,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 13:12:04,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237672619] [2022-12-14 13:12:04,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:12:04,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 13:12:04,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:12:04,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 13:12:04,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:12:04,947 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:12:05,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:12:05,024 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2022-12-14 13:12:05,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 13:12:05,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 13:12:05,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:12:05,032 INFO L225 Difference]: With dead ends: 44 [2022-12-14 13:12:05,032 INFO L226 Difference]: Without dead ends: 26 [2022-12-14 13:12:05,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-14 13:12:05,037 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:12:05,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 66 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:12:05,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-14 13:12:05,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 15. [2022-12-14 13:12:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:12:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-12-14 13:12:05,062 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 11 [2022-12-14 13:12:05,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:12:05,062 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-12-14 13:12:05,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:12:05,063 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-12-14 13:12:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 13:12:05,063 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:12:05,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:12:05,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 13:12:05,064 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:12:05,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:12:05,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1321610551, now seen corresponding path program 1 times [2022-12-14 13:12:05,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:12:05,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542995878] [2022-12-14 13:12:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:12:05,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:12:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:12:05,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:12:05,125 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:12:05,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542995878] [2022-12-14 13:12:05,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542995878] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:12:05,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:12:05,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 13:12:05,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620177135] [2022-12-14 13:12:05,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:12:05,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 13:12:05,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:12:05,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 13:12:05,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 13:12:05,128 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:12:05,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 13:12:05,144 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-12-14 13:12:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 13:12:05,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 13:12:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 13:12:05,145 INFO L225 Difference]: With dead ends: 33 [2022-12-14 13:12:05,145 INFO L226 Difference]: Without dead ends: 25 [2022-12-14 13:12:05,145 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 [2022-12-14 13:12:05,146 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 13:12:05,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 30 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 13:12:05,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-14 13:12:05,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2022-12-14 13:12:05,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:12:05,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-12-14 13:12:05,150 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 11 [2022-12-14 13:12:05,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 13:12:05,151 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-12-14 13:12:05,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:12:05,151 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-12-14 13:12:05,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 13:12:05,151 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:12:05,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:12:05,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 13:12:05,152 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:12:05,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:12:05,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1139004290, now seen corresponding path program 1 times [2022-12-14 13:12:05,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:12:05,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874540853] [2022-12-14 13:12:05,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:12:05,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:12:05,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:12:05,168 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 13:12:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 13:12:05,192 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 13:12:05,192 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 13:12:05,193 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 13:12:05,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 13:12:05,197 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-14 13:12:05,200 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 13:12:05,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:12:05 BoogieIcfgContainer [2022-12-14 13:12:05,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 13:12:05,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 13:12:05,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 13:12:05,220 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 13:12:05,220 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:12:04" (3/4) ... [2022-12-14 13:12:05,223 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 13:12:05,223 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 13:12:05,223 INFO L158 Benchmark]: Toolchain (without parser) took 1095.46ms. Allocated memory was 134.2MB in the beginning and 174.1MB in the end (delta: 39.8MB). Free memory was 93.9MB in the beginning and 115.7MB in the end (delta: -21.9MB). Peak memory consumption was 19.7MB. Max. memory is 16.1GB. [2022-12-14 13:12:05,224 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 134.2MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:12:05,224 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.96ms. Allocated memory is still 134.2MB. Free memory was 93.5MB in the beginning and 82.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 13:12:05,224 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.16ms. Allocated memory is still 134.2MB. Free memory was 82.7MB in the beginning and 80.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:12:05,225 INFO L158 Benchmark]: Boogie Preprocessor took 18.10ms. Allocated memory is still 134.2MB. Free memory was 80.6MB in the beginning and 79.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:12:05,225 INFO L158 Benchmark]: RCFGBuilder took 244.81ms. Allocated memory is still 134.2MB. Free memory was 78.9MB in the beginning and 65.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-14 13:12:05,225 INFO L158 Benchmark]: TraceAbstraction took 632.46ms. Allocated memory was 134.2MB in the beginning and 174.1MB in the end (delta: 39.8MB). Free memory was 65.1MB in the beginning and 115.7MB in the end (delta: -50.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:12:05,226 INFO L158 Benchmark]: Witness Printer took 3.04ms. Allocated memory is still 174.1MB. Free memory is still 115.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:12:05,227 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 134.2MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 166.96ms. Allocated memory is still 134.2MB. Free memory was 93.5MB in the beginning and 82.7MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.16ms. Allocated memory is still 134.2MB. Free memory was 82.7MB in the beginning and 80.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 18.10ms. Allocated memory is still 134.2MB. Free memory was 80.6MB in the beginning and 79.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 244.81ms. Allocated memory is still 134.2MB. Free memory was 78.9MB in the beginning and 65.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 632.46ms. Allocated memory was 134.2MB in the beginning and 174.1MB in the end (delta: 39.8MB). Free memory was 65.1MB in the beginning and 115.7MB in the end (delta: -50.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.04ms. Allocated memory is still 174.1MB. Free memory is still 115.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 53]: 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 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 40, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 38. Possible FailurePath: [L1] int __return_main; [L14] int main__i; [L15] float main__z; [L16] float main__t; [L17] float main__min[5] = { 5, 10, 12, 30, 150 }; [L18] float main__max[5] = { 10, 12, 30, 150, 300 }; [L19] float main__org[5] = { 1, 5, -10, 30, 20 }; [L20] float main__slope[5] = { 4, -15, 40, -10, 0 }; [L21] main__t = __VERIFIER_nondet_float() [L22] int main____CPAchecker_TMP_0; [L23] EXPR main__min[0] VAL [__return_main=0, main__max={7:0}, main__min={6:0}, main__min[0]=58, main__org={5:0}, main__slope={4:0}] [L23] COND TRUE main__t >= (main__min[0]) [L25] EXPR main__max[4UL] VAL [__return_main=0, main__max={7:0}, main__max[4UL]=59, main__min={6:0}, main__org={5:0}, main__slope={4:0}] [L25] COND TRUE main__t <= (main__max[4UL]) [L27] main____CPAchecker_TMP_0 = 1 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__max={7:0}, main__min={6:0}, main__org={5:0}, main__slope={4:0}] [L29] COND TRUE main____CPAchecker_TMP_0 != 0 [L31] main__i = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={7:0}, main__min={6:0}, main__org={5:0}, main__slope={4:0}] [L33] COND TRUE main__i < 5UL [L35] EXPR main__max[main__i] VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={7:0}, main__max[main__i]=57, main__min={6:0}, main__org={5:0}, main__slope={4:0}] [L35] COND TRUE main__t <= (main__max[main__i]) [L38] EXPR main__org[main__i] [L38] EXPR main__slope[main__i] [L38] EXPR main__min[main__i] [L38] EXPR main__max[main__i] [L38] EXPR main__min[main__i] [L38] main__z = (main__org[main__i]) + (((main__slope[main__i]) * (main__t - (main__min[main__i]))) / ((main__max[main__i]) - (main__min[main__i]))) [L39] int main____CPAchecker_TMP_1; VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={7:0}, main__min={6:0}, main__org={5:0}, main__slope={4:0}] [L40] COND FALSE !(main__z >= -10.0) VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={7:0}, main__min={6:0}, main__org={5:0}, main__slope={4:0}] [L65] main____CPAchecker_TMP_1 = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={7:0}, main__min={6:0}, main__org={5:0}, main__slope={4:0}] [L47] int __tmp_1; [L48] __tmp_1 = main____CPAchecker_TMP_1 [L49] int __VERIFIER_assert__cond; [L50] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={7:0}, main__min={6:0}, main__org={5:0}, main__slope={4:0}] [L51] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={7:0}, main__min={6:0}, main__org={5:0}, main__slope={4:0}] [L53] reach_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={7:0}, main__min={6:0}, main__org={5:0}, main__slope={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 96 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 34 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 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 [2022-12-14 13:12:05,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5c5b05c4ae88eb6dc9b39e487669b31df0ffdcd18c2998e1a9c5cebc84002587 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 13:12:06,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:12:06,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:12:06,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:12:06,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:12:06,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:12:06,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:12:06,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:12:06,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:12:06,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:12:06,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:12:06,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:12:06,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:12:06,991 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:12:06,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:12:06,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:12:06,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:12:06,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:12:06,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:12:06,997 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:12:06,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:12:06,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:12:07,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:12:07,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:12:07,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:12:07,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:12:07,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:12:07,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:12:07,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:12:07,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:12:07,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:12:07,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:12:07,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:12:07,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:12:07,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:12:07,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:12:07,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:12:07,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:12:07,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:12:07,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:12:07,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:12:07,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 13:12:07,033 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:12:07,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:12:07,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:12:07,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:12:07,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:12:07,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:12:07,035 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:12:07,035 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:12:07,035 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:12:07,035 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:12:07,036 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:12:07,036 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:12:07,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:12:07,037 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:12:07,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:12:07,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:12:07,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:12:07,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:12:07,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:12:07,038 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 13:12:07,038 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 13:12:07,038 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 13:12:07,038 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:12:07,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:12:07,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:12:07,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:12:07,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:12:07,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 13:12:07,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:12:07,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:12:07,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:12:07,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:12:07,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:12:07,040 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 13:12:07,040 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 13:12:07,040 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:12:07,040 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:12:07,041 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 13:12:07,041 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_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c5b05c4ae88eb6dc9b39e487669b31df0ffdcd18c2998e1a9c5cebc84002587 [2022-12-14 13:12:07,264 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:12:07,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:12:07,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:12:07,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:12:07,283 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:12:07,284 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c [2022-12-14 13:12:09,982 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:12:10,144 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:12:10,144 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c [2022-12-14 13:12:10,149 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/data/98641138c/7fc1e33314974e74a14b8ac2906ba1a8/FLAG590f6b99a [2022-12-14 13:12:10,160 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/data/98641138c/7fc1e33314974e74a14b8ac2906ba1a8 [2022-12-14 13:12:10,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:12:10,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:12:10,164 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:12:10,164 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:12:10,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:12:10,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:12:10" (1/1) ... [2022-12-14 13:12:10,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45037313 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:10, skipping insertion in model container [2022-12-14 13:12:10,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:12:10" (1/1) ... [2022-12-14 13:12:10,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:12:10,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:12:10,299 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c[1455,1468] [2022-12-14 13:12:10,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:12:10,314 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:12:10,332 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/sv-benchmarks/c/float-benchs/interpolation2.c.p+cfa-reducer.c[1455,1468] [2022-12-14 13:12:10,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:12:10,346 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:12:10,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:10 WrapperNode [2022-12-14 13:12:10,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:12:10,347 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:12:10,347 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:12:10,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:12:10,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:10" (1/1) ... [2022-12-14 13:12:10,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:10" (1/1) ... [2022-12-14 13:12:10,376 INFO L138 Inliner]: procedures = 19, calls = 55, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 132 [2022-12-14 13:12:10,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:12:10,377 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:12:10,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:12:10,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:12:10,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:10" (1/1) ... [2022-12-14 13:12:10,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:10" (1/1) ... [2022-12-14 13:12:10,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:10" (1/1) ... [2022-12-14 13:12:10,388 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:10" (1/1) ... [2022-12-14 13:12:10,394 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:10" (1/1) ... [2022-12-14 13:12:10,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:10" (1/1) ... [2022-12-14 13:12:10,397 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:10" (1/1) ... [2022-12-14 13:12:10,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:10" (1/1) ... [2022-12-14 13:12:10,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:12:10,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:12:10,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:12:10,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:12:10,401 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:10" (1/1) ... [2022-12-14 13:12:10,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:12:10,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:12:10,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:12:10,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:12:10,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:12:10,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2022-12-14 13:12:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 13:12:10,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 13:12:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-12-14 13:12:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:12:10,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:12:10,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 13:12:10,533 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:12:10,535 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:12:13,099 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:12:13,103 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:12:13,103 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 13:12:13,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:12:13 BoogieIcfgContainer [2022-12-14 13:12:13,104 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:12:13,106 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:12:13,106 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:12:13,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:12:13,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:12:10" (1/3) ... [2022-12-14 13:12:13,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b164d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:12:13, skipping insertion in model container [2022-12-14 13:12:13,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:12:10" (2/3) ... [2022-12-14 13:12:13,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b164d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:12:13, skipping insertion in model container [2022-12-14 13:12:13,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:12:13" (3/3) ... [2022-12-14 13:12:13,111 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation2.c.p+cfa-reducer.c [2022-12-14 13:12:13,124 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:12:13,124 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 13:12:13,157 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:12:13,162 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;@27d73ed6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:12:13,162 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 13:12:13,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:12:13,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-14 13:12:13,169 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:12:13,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:12:13,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 13:12:13,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:12:13,174 INFO L85 PathProgramCache]: Analyzing trace with hash 83921358, now seen corresponding path program 1 times [2022-12-14 13:12:13,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 13:12:13,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236592128] [2022-12-14 13:12:13,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:12:13,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 13:12:13,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 13:12:13,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 13:12:13,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 13:12:13,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 139 [2022-12-14 13:12:13,268 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_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-12-14 13:12:13,272 INFO L158 Benchmark]: Toolchain (without parser) took 3108.09ms. Allocated memory is still 83.9MB. Free memory was 62.5MB in the beginning and 36.2MB in the end (delta: 26.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-12-14 13:12:13,272 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 36.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 13:12:13,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.74ms. Allocated memory is still 83.9MB. Free memory was 62.3MB in the beginning and 50.6MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 13:12:13,274 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.82ms. Allocated memory is still 83.9MB. Free memory was 50.4MB in the beginning and 48.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:12:13,274 INFO L158 Benchmark]: Boogie Preprocessor took 22.86ms. Allocated memory is still 83.9MB. Free memory was 48.5MB in the beginning and 46.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 13:12:13,275 INFO L158 Benchmark]: RCFGBuilder took 2703.91ms. Allocated memory is still 83.9MB. Free memory was 46.8MB in the beginning and 50.6MB in the end (delta: -3.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-12-14 13:12:13,275 INFO L158 Benchmark]: TraceAbstraction took 164.46ms. Allocated memory is still 83.9MB. Free memory was 50.1MB in the beginning and 36.2MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-14 13:12:13,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 36.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.74ms. Allocated memory is still 83.9MB. Free memory was 62.3MB in the beginning and 50.6MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.82ms. Allocated memory is still 83.9MB. Free memory was 50.4MB in the beginning and 48.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.86ms. Allocated memory is still 83.9MB. Free memory was 48.5MB in the beginning and 46.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2703.91ms. Allocated memory is still 83.9MB. Free memory was 46.8MB in the beginning and 50.6MB in the end (delta: -3.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 164.46ms. Allocated memory is still 83.9MB. Free memory was 50.1MB in the beginning and 36.2MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. 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_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2) 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_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-14 13:12:13,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb3b507-4c92-4c6f-b2ad-b1779c5a0c0d/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2) with exit command (exit)) Received EOF on stdin. No stderr output.