./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:47:52,490 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:47:52,492 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:47:52,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:47:52,525 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:47:52,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:47:52,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:47:52,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:47:52,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:47:52,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:47:52,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:47:52,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:47:52,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:47:52,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:47:52,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:47:52,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:47:52,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:47:52,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:47:52,562 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:47:52,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:47:52,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:47:52,571 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:47:52,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:47:52,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:47:52,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:47:52,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:47:52,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:47:52,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:47:52,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:47:52,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:47:52,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:47:52,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:47:52,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:47:52,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:47:52,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:47:52,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:47:52,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:47:52,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:47:52,599 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:47:52,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:47:52,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:47:52,604 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:47:52,642 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:47:52,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:47:52,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:47:52,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:47:52,644 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:47:52,644 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:47:52,644 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:47:52,644 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:47:52,645 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:47:52,645 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:47:52,646 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:47:52,646 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:47:52,646 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:47:52,646 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:47:52,647 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:47:52,647 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:47:52,647 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:47:52,647 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:47:52,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:47:52,648 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:47:52,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:47:52,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:47:52,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:47:52,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:47:52,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:47:52,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:47:52,650 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:47:52,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:47:52,651 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:47:52,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:47:52,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:47:52,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:47:52,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:47:52,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:47:52,653 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:47:52,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:47:52,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:47:52,653 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:47:52,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:47:52,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:47:52,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:47:52,654 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_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 [2022-11-22 02:47:52,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:47:52,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:47:52,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:47:52,964 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:47:52,964 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:47:52,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2022-11-22 02:47:56,390 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:47:56,599 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:47:56,599 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2022-11-22 02:47:56,606 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/data/312d02f52/8c49f6f95aac4247ab3a9c11bd3a183e/FLAGcc4256086 [2022-11-22 02:47:56,623 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/data/312d02f52/8c49f6f95aac4247ab3a9c11bd3a183e [2022-11-22 02:47:56,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:47:56,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:47:56,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:47:56,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:47:56,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:47:56,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:47:56" (1/1) ... [2022-11-22 02:47:56,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4442a817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:56, skipping insertion in model container [2022-11-22 02:47:56,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:47:56" (1/1) ... [2022-11-22 02:47:56,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:47:56,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:47:56,899 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_d830fd47-fd75-4d61-a53a-33fc64df9cc1/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2022-11-22 02:47:56,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:47:56,914 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:47:56,957 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_d830fd47-fd75-4d61-a53a-33fc64df9cc1/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2022-11-22 02:47:56,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:47:56,973 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:47:56,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:56 WrapperNode [2022-11-22 02:47:56,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:47:56,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:47:56,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:47:56,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:47:56,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:56" (1/1) ... [2022-11-22 02:47:56,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:56" (1/1) ... [2022-11-22 02:47:57,026 INFO L138 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2022-11-22 02:47:57,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:47:57,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:47:57,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:47:57,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:47:57,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:56" (1/1) ... [2022-11-22 02:47:57,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:56" (1/1) ... [2022-11-22 02:47:57,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:56" (1/1) ... [2022-11-22 02:47:57,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:56" (1/1) ... [2022-11-22 02:47:57,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:56" (1/1) ... [2022-11-22 02:47:57,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:56" (1/1) ... [2022-11-22 02:47:57,071 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:56" (1/1) ... [2022-11-22 02:47:57,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:56" (1/1) ... [2022-11-22 02:47:57,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:47:57,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:47:57,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:47:57,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:47:57,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:56" (1/1) ... [2022-11-22 02:47:57,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:47:57,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:47:57,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:47:57,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:47:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:47:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:47:57,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:47:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-22 02:47:57,160 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-22 02:47:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-22 02:47:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:47:57,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:47:57,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:47:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:47:57,270 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:47:57,272 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:47:57,496 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:47:57,654 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:47:57,654 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-22 02:47:57,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:47:57 BoogieIcfgContainer [2022-11-22 02:47:57,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:47:57,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:47:57,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:47:57,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:47:57,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:47:56" (1/3) ... [2022-11-22 02:47:57,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715c5ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:47:57, skipping insertion in model container [2022-11-22 02:47:57,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:47:56" (2/3) ... [2022-11-22 02:47:57,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@715c5ea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:47:57, skipping insertion in model container [2022-11-22 02:47:57,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:47:57" (3/3) ... [2022-11-22 02:47:57,670 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2022-11-22 02:47:57,690 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:47:57,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:47:57,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:47:57,745 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;@3c17ffb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:47:57,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:47:57,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:47:57,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 02:47:57,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:47:57,764 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:47:57,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:47:57,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:47:57,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1082913263, now seen corresponding path program 1 times [2022-11-22 02:47:57,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:47:57,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156770220] [2022-11-22 02:47:57,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:57,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:47:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:47:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:47:57,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:47:57,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156770220] [2022-11-22 02:47:57,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156770220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:47:57,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:47:57,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:47:57,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074424488] [2022-11-22 02:47:57,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:47:57,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:47:57,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:47:58,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:47:58,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:47:58,025 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:47:58,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:47:58,065 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2022-11-22 02:47:58,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:47:58,067 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-22 02:47:58,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:47:58,073 INFO L225 Difference]: With dead ends: 40 [2022-11-22 02:47:58,074 INFO L226 Difference]: Without dead ends: 19 [2022-11-22 02:47:58,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:47:58,080 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:47:58,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:47:58,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-22 02:47:58,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-22 02:47:58,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:47:58,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-22 02:47:58,118 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-11-22 02:47:58,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:47:58,119 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-22 02:47:58,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:47:58,119 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-22 02:47:58,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 02:47:58,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:47:58,121 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:47:58,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:47:58,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:47:58,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:47:58,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2022826722, now seen corresponding path program 1 times [2022-11-22 02:47:58,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:47:58,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579010713] [2022-11-22 02:47:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:47:58,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:47:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:47:58,172 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-22 02:47:58,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-22 02:47:58,230 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-22 02:47:58,231 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-22 02:47:58,233 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 02:47:58,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:47:58,238 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-22 02:47:58,242 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:47:58,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:47:58 BoogieIcfgContainer [2022-11-22 02:47:58,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:47:58,272 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:47:58,272 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:47:58,272 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:47:58,273 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:47:57" (3/4) ... [2022-11-22 02:47:58,276 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-22 02:47:58,276 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:47:58,277 INFO L158 Benchmark]: Toolchain (without parser) took 1645.92ms. Allocated memory is still 132.1MB. Free memory was 90.4MB in the beginning and 47.5MB in the end (delta: 42.9MB). Peak memory consumption was 42.6MB. Max. memory is 16.1GB. [2022-11-22 02:47:58,277 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 107.0MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:47:58,278 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.43ms. Allocated memory is still 132.1MB. Free memory was 90.1MB in the beginning and 97.1MB in the end (delta: -7.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:47:58,278 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.09ms. Allocated memory is still 132.1MB. Free memory was 97.1MB in the beginning and 95.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:47:58,279 INFO L158 Benchmark]: Boogie Preprocessor took 48.95ms. Allocated memory is still 132.1MB. Free memory was 95.4MB in the beginning and 94.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:47:58,279 INFO L158 Benchmark]: RCFGBuilder took 584.15ms. Allocated memory is still 132.1MB. Free memory was 94.1MB in the beginning and 76.2MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-22 02:47:58,280 INFO L158 Benchmark]: TraceAbstraction took 607.78ms. Allocated memory is still 132.1MB. Free memory was 75.5MB in the beginning and 48.0MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-22 02:47:58,281 INFO L158 Benchmark]: Witness Printer took 4.25ms. Allocated memory is still 132.1MB. Free memory was 48.0MB in the beginning and 47.5MB in the end (delta: 488.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:47:58,290 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 107.0MB. Free memory is still 75.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.43ms. Allocated memory is still 132.1MB. Free memory was 90.1MB in the beginning and 97.1MB in the end (delta: -7.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.09ms. Allocated memory is still 132.1MB. Free memory was 97.1MB in the beginning and 95.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.95ms. Allocated memory is still 132.1MB. Free memory was 95.4MB in the beginning and 94.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 584.15ms. Allocated memory is still 132.1MB. Free memory was 94.1MB in the beginning and 76.2MB in the end (delta: 18.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 607.78ms. Allocated memory is still 132.1MB. Free memory was 75.5MB in the beginning and 48.0MB in the end (delta: 27.6MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 4.25ms. Allocated memory is still 132.1MB. Free memory was 48.0MB in the beginning and 47.5MB in the end (delta: 488.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 72]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 71, overapproximation of someUnaryFLOAToperation at line 67. Possible FailurePath: [L66] float x = 0.0f; [L67] float y = -0.0f; [L68] CALL, EXPR fmin_float(x, y) [L38] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L15] __uint32_t w; VAL [\old(x)=0, x=0] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578696, __fpclassify_float(x)=0, x=0, y=4286578696] [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; VAL [\old(x)=0, \old(y)=4286578696, \result=4286578696, x=0, y=4286578696] [L68] RET, EXPR fmin_float(x, y) [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=4286578696, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=4286578696] [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L72] reach_error() VAL [res=4286578696, x=0, y=4286578696] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-22 02:47:58,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:48:00,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:48:00,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:48:00,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:48:00,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:48:00,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:48:00,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:48:00,709 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:48:00,711 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:48:00,712 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:48:00,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:48:00,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:48:00,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:48:00,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:48:00,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:48:00,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:48:00,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:48:00,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:48:00,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:48:00,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:48:00,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:48:00,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:48:00,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:48:00,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:48:00,748 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:48:00,753 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:48:00,753 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:48:00,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:48:00,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:48:00,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:48:00,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:48:00,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:48:00,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:48:00,760 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:48:00,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:48:00,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:48:00,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:48:00,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:48:00,762 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:48:00,763 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:48:00,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:48:00,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-22 02:48:00,807 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:48:00,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:48:00,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:48:00,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:48:00,810 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:48:00,810 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:48:00,810 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:48:00,811 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:48:00,811 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:48:00,811 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:48:00,812 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:48:00,812 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:48:00,813 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:48:00,813 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:48:00,814 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:48:00,814 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:48:00,814 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:48:00,814 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:48:00,815 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:48:00,815 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 02:48:00,815 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 02:48:00,815 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 02:48:00,815 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:48:00,816 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:48:00,816 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:48:00,816 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:48:00,816 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:48:00,817 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 02:48:00,817 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:48:00,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:48:00,817 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:48:00,817 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:48:00,818 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:48:00,818 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 02:48:00,818 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 02:48:00,819 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:48:00,819 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:48:00,819 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 02:48:00,819 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_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 [2022-11-22 02:48:01,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:48:01,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:48:01,247 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:48:01,249 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:48:01,252 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:48:01,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2022-11-22 02:48:04,511 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:48:04,770 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:48:04,771 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2022-11-22 02:48:04,782 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/data/e343abc41/7a5cf8754a66452a9555059bd513f30f/FLAGe8730b26a [2022-11-22 02:48:04,804 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/data/e343abc41/7a5cf8754a66452a9555059bd513f30f [2022-11-22 02:48:04,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:48:04,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:48:04,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:48:04,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:48:04,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:48:04,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:48:04" (1/1) ... [2022-11-22 02:48:04,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74fa7142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:04, skipping insertion in model container [2022-11-22 02:48:04,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:48:04" (1/1) ... [2022-11-22 02:48:04,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:48:04,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:48:05,047 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_d830fd47-fd75-4d61-a53a-33fc64df9cc1/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2022-11-22 02:48:05,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:48:05,067 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:48:05,104 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_d830fd47-fd75-4d61-a53a-33fc64df9cc1/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2022-11-22 02:48:05,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:48:05,131 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:48:05,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:05 WrapperNode [2022-11-22 02:48:05,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:48:05,133 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:48:05,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:48:05,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:48:05,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:05" (1/1) ... [2022-11-22 02:48:05,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:05" (1/1) ... [2022-11-22 02:48:05,197 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2022-11-22 02:48:05,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:48:05,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:48:05,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:48:05,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:48:05,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:05" (1/1) ... [2022-11-22 02:48:05,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:05" (1/1) ... [2022-11-22 02:48:05,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:05" (1/1) ... [2022-11-22 02:48:05,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:05" (1/1) ... [2022-11-22 02:48:05,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:05" (1/1) ... [2022-11-22 02:48:05,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:05" (1/1) ... [2022-11-22 02:48:05,257 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:05" (1/1) ... [2022-11-22 02:48:05,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:05" (1/1) ... [2022-11-22 02:48:05,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:48:05,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:48:05,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:48:05,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:48:05,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:05" (1/1) ... [2022-11-22 02:48:05,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:48:05,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:48:05,313 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:48:05,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:48:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:48:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-22 02:48:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:48:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-22 02:48:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-22 02:48:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-22 02:48:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:48:05,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:48:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-22 02:48:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:48:05,494 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:48:05,496 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:48:05,797 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:48:05,803 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:48:05,803 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-22 02:48:05,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:48:05 BoogieIcfgContainer [2022-11-22 02:48:05,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:48:05,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:48:05,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:48:05,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:48:05,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:48:04" (1/3) ... [2022-11-22 02:48:05,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116f4218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:48:05, skipping insertion in model container [2022-11-22 02:48:05,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:48:05" (2/3) ... [2022-11-22 02:48:05,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@116f4218 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:48:05, skipping insertion in model container [2022-11-22 02:48:05,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:48:05" (3/3) ... [2022-11-22 02:48:05,842 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2022-11-22 02:48:05,874 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:48:05,875 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:48:05,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:48:05,937 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;@2918e2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:48:05,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:48:05,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:48:05,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-22 02:48:05,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:05,952 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:48:05,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:48:05,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:05,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1229941712, now seen corresponding path program 1 times [2022-11-22 02:48:05,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:48:05,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71546096] [2022-11-22 02:48:05,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:05,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:48:05,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:48:05,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:48:05,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-22 02:48:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:06,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-22 02:48:06,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:06,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:06,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:48:06,139 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:48:06,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71546096] [2022-11-22 02:48:06,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71546096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:48:06,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:48:06,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:48:06,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053950464] [2022-11-22 02:48:06,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:48:06,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:48:06,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:48:06,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:48:06,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:48:06,183 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:48:06,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:06,207 INFO L93 Difference]: Finished difference Result 51 states and 76 transitions. [2022-11-22 02:48:06,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:48:06,209 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-22 02:48:06,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:06,218 INFO L225 Difference]: With dead ends: 51 [2022-11-22 02:48:06,218 INFO L226 Difference]: Without dead ends: 24 [2022-11-22 02:48:06,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:48:06,226 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:06,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:48:06,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-22 02:48:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-22 02:48:06,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:48:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-11-22 02:48:06,267 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 13 [2022-11-22 02:48:06,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:06,267 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-11-22 02:48:06,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:48:06,268 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-11-22 02:48:06,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 02:48:06,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:06,271 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:48:06,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-22 02:48:06,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:48:06,484 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:48:06,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:06,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2003061117, now seen corresponding path program 1 times [2022-11-22 02:48:06,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:48:06,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954600817] [2022-11-22 02:48:06,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:06,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:48:06,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:48:06,496 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:48:06,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-22 02:48:06,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:06,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:48:06,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:06,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:48:06,697 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:48:06,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954600817] [2022-11-22 02:48:06,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954600817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:48:06,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:48:06,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:48:06,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798072712] [2022-11-22 02:48:06,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:48:06,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:48:06,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:48:06,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:48:06,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:48:06,713 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:48:06,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:06,783 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-11-22 02:48:06,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:48:06,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-22 02:48:06,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:06,803 INFO L225 Difference]: With dead ends: 36 [2022-11-22 02:48:06,803 INFO L226 Difference]: Without dead ends: 27 [2022-11-22 02:48:06,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:48:06,805 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:06,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:48:06,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-22 02:48:06,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-22 02:48:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-22 02:48:06,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-11-22 02:48:06,823 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2022-11-22 02:48:06,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:06,823 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-11-22 02:48:06,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:48:06,824 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-11-22 02:48:06,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-22 02:48:06,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:06,825 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:48:06,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:48:07,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:48:07,046 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:48:07,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:07,047 INFO L85 PathProgramCache]: Analyzing trace with hash 579011981, now seen corresponding path program 1 times [2022-11-22 02:48:07,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:48:07,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982139684] [2022-11-22 02:48:07,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:07,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:48:07,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:48:07,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:48:07,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-22 02:48:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:07,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 02:48:07,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:48:07,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:48:07,314 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:48:07,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982139684] [2022-11-22 02:48:07,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982139684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:48:07,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:48:07,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:48:07,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548031934] [2022-11-22 02:48:07,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:48:07,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:48:07,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:48:07,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:48:07,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:48:07,317 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:48:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:07,676 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2022-11-22 02:48:07,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:48:07,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-22 02:48:07,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:07,678 INFO L225 Difference]: With dead ends: 49 [2022-11-22 02:48:07,678 INFO L226 Difference]: Without dead ends: 26 [2022-11-22 02:48:07,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:48:07,680 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 37 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:07,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 62 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:48:07,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-22 02:48:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-22 02:48:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 02:48:07,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-11-22 02:48:07,687 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 15 [2022-11-22 02:48:07,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:07,688 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-11-22 02:48:07,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-22 02:48:07,688 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-11-22 02:48:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 02:48:07,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:07,690 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:48:07,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:48:07,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:48:07,907 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:48:07,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:07,908 INFO L85 PathProgramCache]: Analyzing trace with hash 800680882, now seen corresponding path program 1 times [2022-11-22 02:48:07,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:48:07,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331641342] [2022-11-22 02:48:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:07,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:48:07,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:48:07,910 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:48:07,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-22 02:48:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:08,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:48:08,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:08,027 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:48:08,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:48:08,028 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:48:08,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331641342] [2022-11-22 02:48:08,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331641342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:48:08,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:48:08,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:48:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382701310] [2022-11-22 02:48:08,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:48:08,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:48:08,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:48:08,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:48:08,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:48:08,032 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:48:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:08,071 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-11-22 02:48:08,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:48:08,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-22 02:48:08,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:08,073 INFO L225 Difference]: With dead ends: 36 [2022-11-22 02:48:08,074 INFO L226 Difference]: Without dead ends: 27 [2022-11-22 02:48:08,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:48:08,075 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:08,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:48:08,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-22 02:48:08,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-22 02:48:08,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 02:48:08,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-11-22 02:48:08,081 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 22 [2022-11-22 02:48:08,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:08,082 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-11-22 02:48:08,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:48:08,083 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-11-22 02:48:08,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 02:48:08,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:08,084 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:48:08,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-22 02:48:08,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:48:08,295 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:48:08,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:08,296 INFO L85 PathProgramCache]: Analyzing trace with hash 802527924, now seen corresponding path program 1 times [2022-11-22 02:48:08,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:48:08,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527298952] [2022-11-22 02:48:08,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:08,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:48:08,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:48:08,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:48:08,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-22 02:48:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:08,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:48:08,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:48:08,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:48:08,523 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:48:08,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527298952] [2022-11-22 02:48:08,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527298952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:48:08,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:48:08,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:48:08,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340637835] [2022-11-22 02:48:08,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:48:08,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:48:08,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:48:08,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:48:08,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:48:08,526 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:48:08,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:08,614 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-22 02:48:08,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:48:08,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-22 02:48:08,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:08,616 INFO L225 Difference]: With dead ends: 39 [2022-11-22 02:48:08,616 INFO L226 Difference]: Without dead ends: 36 [2022-11-22 02:48:08,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:48:08,618 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:08,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 80 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:48:08,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-22 02:48:08,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2022-11-22 02:48:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-22 02:48:08,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-22 02:48:08,625 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 22 [2022-11-22 02:48:08,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:08,626 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-22 02:48:08,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:48:08,626 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-22 02:48:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-22 02:48:08,627 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:08,628 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:48:08,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-22 02:48:08,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:48:08,848 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:48:08,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:08,849 INFO L85 PathProgramCache]: Analyzing trace with hash -288314810, now seen corresponding path program 1 times [2022-11-22 02:48:08,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:48:08,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628918993] [2022-11-22 02:48:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:08,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:48:08,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:48:08,857 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:48:08,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-22 02:48:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:08,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-22 02:48:08,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:09,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:48:09,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:48:09,074 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:48:09,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628918993] [2022-11-22 02:48:09,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628918993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:48:09,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:48:09,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:48:09,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157577038] [2022-11-22 02:48:09,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:48:09,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:48:09,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:48:09,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:48:09,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:48:09,077 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:48:09,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:09,413 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-11-22 02:48:09,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:48:09,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-22 02:48:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:09,415 INFO L225 Difference]: With dead ends: 38 [2022-11-22 02:48:09,415 INFO L226 Difference]: Without dead ends: 21 [2022-11-22 02:48:09,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:48:09,417 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:09,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 58 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:48:09,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-22 02:48:09,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-22 02:48:09,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-22 02:48:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-22 02:48:09,423 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 23 [2022-11-22 02:48:09,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:09,423 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-22 02:48:09,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:48:09,424 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-22 02:48:09,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-22 02:48:09,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:48:09,425 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:48:09,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:48:09,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:48:09,638 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:48:09,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:48:09,639 INFO L85 PathProgramCache]: Analyzing trace with hash 543069769, now seen corresponding path program 1 times [2022-11-22 02:48:09,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:48:09,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926341451] [2022-11-22 02:48:09,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:48:09,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:48:09,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:48:09,642 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-22 02:48:09,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-22 02:48:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:48:09,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-22 02:48:09,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:48:10,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:48:10,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:48:10,053 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:48:10,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926341451] [2022-11-22 02:48:10,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926341451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:48:10,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:48:10,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 02:48:10,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330408302] [2022-11-22 02:48:10,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:48:10,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:48:10,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:48:10,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:48:10,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:48:10,060 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:48:10,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:48:10,275 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-11-22 02:48:10,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:48:10,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-11-22 02:48:10,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:48:10,277 INFO L225 Difference]: With dead ends: 21 [2022-11-22 02:48:10,277 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 02:48:10,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:48:10,278 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:48:10,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 77 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:48:10,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 02:48:10,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 02:48:10,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:48:10,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 02:48:10,280 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2022-11-22 02:48:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:48:10,280 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 02:48:10,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-22 02:48:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 02:48:10,281 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 02:48:10,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 02:48:10,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-22 02:48:10,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:48:10,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 02:48:10,686 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 02:48:10,687 INFO L895 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: (and (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24)) (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_fmin_float_~y#1|)) [2022-11-22 02:48:10,687 INFO L899 garLoopResultBuilder]: For program point L40-1(lines 40 41) no Hoare annotation was computed. [2022-11-22 02:48:10,687 INFO L899 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2022-11-22 02:48:10,687 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24)) (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_fmin_float_~y#1|)) [2022-11-22 02:48:10,687 INFO L899 garLoopResultBuilder]: For program point L38-1(lines 38 39) no Hoare annotation was computed. [2022-11-22 02:48:10,687 INFO L899 garLoopResultBuilder]: For program point L71-2(lines 71 74) no Hoare annotation was computed. [2022-11-22 02:48:10,687 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-22 02:48:10,688 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 02:48:10,688 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-22 02:48:10,688 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2022-11-22 02:48:10,688 INFO L895 garLoopResultBuilder]: At program point L55(lines 46 56) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= |ULTIMATE.start_fmin_float_#res#1| .cse0) (= .cse0 (fp ((_ extract 31 31) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 30 23) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 22 0) |ULTIMATE.start___signbit_float_~w~1#1|))) |ULTIMATE.start_main_#t~short10#1| (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24)) (= |ULTIMATE.start___signbit_float_#res#1| (_ bv1 32)) (= .cse0 |ULTIMATE.start___signbit_float_~x#1|) (= .cse0 |ULTIMATE.start_fmin_float_~y#1|) (= |ULTIMATE.start_main_~res~0#1| .cse0))) [2022-11-22 02:48:10,688 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 49 53) no Hoare annotation was computed. [2022-11-22 02:48:10,688 INFO L895 garLoopResultBuilder]: At program point L49-2(lines 49 53) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= |ULTIMATE.start_fmin_float_#res#1| .cse0) |ULTIMATE.start_main_#t~short10#1| (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24)) (= .cse0 |ULTIMATE.start___signbit_float_~x#1|) (= .cse0 |ULTIMATE.start_fmin_float_~y#1|) (= |ULTIMATE.start_main_~res~0#1| .cse0))) [2022-11-22 02:48:10,688 INFO L899 garLoopResultBuilder]: For program point L49-3(lines 49 53) no Hoare annotation was computed. [2022-11-22 02:48:10,689 INFO L902 garLoopResultBuilder]: At program point L76(lines 58 77) the Hoare annotation is: true [2022-11-22 02:48:10,689 INFO L895 garLoopResultBuilder]: At program point L43(lines 37 44) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= |ULTIMATE.start_fmin_float_#res#1| .cse0) (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24)) (= .cse0 |ULTIMATE.start_fmin_float_~y#1|))) [2022-11-22 02:48:10,689 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2022-11-22 02:48:10,689 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 34) no Hoare annotation was computed. [2022-11-22 02:48:10,689 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 14 35) no Hoare annotation was computed. [2022-11-22 02:48:10,689 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 34) no Hoare annotation was computed. [2022-11-22 02:48:10,689 INFO L899 garLoopResultBuilder]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2022-11-22 02:48:10,689 INFO L895 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (= |__fpclassify_float_#in~x| __fpclassify_float_~x) [2022-11-22 02:48:10,689 INFO L899 garLoopResultBuilder]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2022-11-22 02:48:10,690 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2022-11-22 02:48:10,690 INFO L902 garLoopResultBuilder]: At program point __fpclassify_floatENTRY(lines 14 35) the Hoare annotation is: true [2022-11-22 02:48:10,690 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 14 35) no Hoare annotation was computed. [2022-11-22 02:48:10,693 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:48:10,696 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:48:10,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:48:10 BoogieIcfgContainer [2022-11-22 02:48:10,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:48:10,713 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:48:10,713 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:48:10,714 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:48:10,714 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:48:05" (3/4) ... [2022-11-22 02:48:10,717 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 02:48:10,723 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2022-11-22 02:48:10,727 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-22 02:48:10,727 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-22 02:48:10,727 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 02:48:10,728 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 02:48:10,751 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2022-11-22 02:48:10,751 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == y [2022-11-22 02:48:10,752 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == y) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2022-11-22 02:48:10,752 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && \result == 1bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == y) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2022-11-22 02:48:10,768 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:48:10,768 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:48:10,769 INFO L158 Benchmark]: Toolchain (without parser) took 5960.34ms. Allocated memory was 79.7MB in the beginning and 115.3MB in the end (delta: 35.7MB). Free memory was 36.7MB in the beginning and 79.6MB in the end (delta: -42.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:48:10,769 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 79.7MB. Free memory is still 57.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:48:10,769 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.72ms. Allocated memory is still 79.7MB. Free memory was 36.5MB in the beginning and 50.4MB in the end (delta: -13.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-11-22 02:48:10,770 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.40ms. Allocated memory is still 79.7MB. Free memory was 50.4MB in the beginning and 48.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:48:10,770 INFO L158 Benchmark]: Boogie Preprocessor took 72.80ms. Allocated memory is still 79.7MB. Free memory was 48.8MB in the beginning and 47.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:48:10,770 INFO L158 Benchmark]: RCFGBuilder took 533.33ms. Allocated memory is still 79.7MB. Free memory was 47.1MB in the beginning and 33.9MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-22 02:48:10,771 INFO L158 Benchmark]: TraceAbstraction took 4883.45ms. Allocated memory was 79.7MB in the beginning and 115.3MB in the end (delta: 35.7MB). Free memory was 58.5MB in the beginning and 82.6MB in the end (delta: -24.1MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. [2022-11-22 02:48:10,771 INFO L158 Benchmark]: Witness Printer took 54.76ms. Allocated memory is still 115.3MB. Free memory was 82.6MB in the beginning and 79.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:48:10,773 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 79.7MB. Free memory is still 57.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.72ms. Allocated memory is still 79.7MB. Free memory was 36.5MB in the beginning and 50.4MB in the end (delta: -13.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.40ms. Allocated memory is still 79.7MB. Free memory was 50.4MB in the beginning and 48.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 72.80ms. Allocated memory is still 79.7MB. Free memory was 48.8MB in the beginning and 47.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 533.33ms. Allocated memory is still 79.7MB. Free memory was 47.1MB in the beginning and 33.9MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4883.45ms. Allocated memory was 79.7MB in the beginning and 115.3MB in the end (delta: 35.7MB). Free memory was 58.5MB in the beginning and 82.6MB in the end (delta: -24.1MB). Peak memory consumption was 11.3MB. Max. memory is 16.1GB. * Witness Printer took 54.76ms. Allocated memory is still 115.3MB. Free memory was 82.6MB in the beginning and 79.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.8s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 470 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 303 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 166 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 167 mSDtfsCounter, 166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=5, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 88 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 46 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 128 ConstructedInterpolants, 6 QuantifiedInterpolants, 359 SizeOfPredicates, 34 NumberOfNonLiveVariables, 485 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 24/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == y - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == y) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((\result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && x == ~Pluszero~LONGDOUBLE()) && \result == 1bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == y) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) RESULT: Ultimate proved your program to be correct! [2022-11-22 02:48:10,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d830fd47-fd75-4d61-a53a-33fc64df9cc1/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE