./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --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 52e7e3a0d80d0519558794c69b54bf5c07c5549c1d780651d891121aff50735c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:27:34,576 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:27:34,650 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:27:34,655 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:27:34,655 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:27:34,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:27:34,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:27:34,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:27:34,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:27:34,686 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:27:34,689 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:27:34,689 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:27:34,690 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:27:34,692 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:27:34,692 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:27:34,693 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:27:34,693 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:27:34,694 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:27:34,694 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:27:34,694 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:27:34,698 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:27:34,699 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:27:34,700 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:27:34,700 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:27:34,701 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:27:34,701 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:27:34,701 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:27:34,701 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:27:34,702 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:27:34,702 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:27:34,702 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:27:34,703 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:27:34,703 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:27:34,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:27:34,703 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:27:34,704 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:27:34,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:27:34,704 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:27:34,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:34,705 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:27:34,705 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:27:34,707 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:27:34,707 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:27:34,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:27:34,708 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:27:34,708 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:27:34,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:27:34,709 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52e7e3a0d80d0519558794c69b54bf5c07c5549c1d780651d891121aff50735c [2024-11-02 12:27:34,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:27:35,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:27:35,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:27:35,024 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:27:35,024 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:27:35,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c Unable to find full path for "g++" [2024-11-02 12:27:37,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:27:37,263 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:27:37,264 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c [2024-11-02 12:27:37,273 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/data/9faa6b5a2/eb5995fd1ade4b49a6b4b0ff76b7ef8a/FLAGaf9867cdc [2024-11-02 12:27:37,288 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/data/9faa6b5a2/eb5995fd1ade4b49a6b4b0ff76b7ef8a [2024-11-02 12:27:37,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:27:37,292 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:27:37,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:37,293 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:27:37,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:27:37,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebddc37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37, skipping insertion in model container [2024-11-02 12:27:37,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,332 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:27:37,546 WARN L251 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_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[1999,2012] [2024-11-02 12:27:37,552 WARN L251 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_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[2368,2381] [2024-11-02 12:27:37,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:37,621 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:27:37,636 WARN L251 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_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[1999,2012] [2024-11-02 12:27:37,638 WARN L251 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_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[2368,2381] [2024-11-02 12:27:37,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:37,690 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:27:37,690 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37 WrapperNode [2024-11-02 12:27:37,690 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:37,692 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:37,692 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:27:37,692 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:27:37,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,714 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,763 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2024-11-02 12:27:37,763 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:37,764 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:27:37,764 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:27:37,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:27:37,789 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,793 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,793 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,814 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,823 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:27:37,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:27:37,828 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:27:37,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:27:37,829 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37" (1/1) ... [2024-11-02 12:27:37,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:37,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:37,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:27:37,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:27:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:27:37,938 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-02 12:27:37,938 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-02 12:27:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:27:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:27:37,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:27:37,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-02 12:27:37,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-02 12:27:38,026 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:27:38,028 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:27:38,614 INFO L? ?]: Removed 74 outVars from TransFormulas that were not future-live. [2024-11-02 12:27:38,614 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:27:38,947 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:27:38,947 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:27:38,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:38 BoogieIcfgContainer [2024-11-02 12:27:38,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:27:38,957 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:27:38,957 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:27:38,965 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:27:38,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:27:37" (1/3) ... [2024-11-02 12:27:38,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f01c594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:38, skipping insertion in model container [2024-11-02 12:27:38,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:37" (2/3) ... [2024-11-02 12:27:38,968 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f01c594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:38, skipping insertion in model container [2024-11-02 12:27:38,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:38" (3/3) ... [2024-11-02 12:27:38,972 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_3a.c.cil.c [2024-11-02 12:27:38,993 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:27:38,993 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-02 12:27:39,081 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:27:39,091 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@7fd0ac84, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:27:39,091 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-02 12:27:39,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:27:39,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:27:39,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:39,103 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:27:39,105 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:39,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:39,111 INFO L85 PathProgramCache]: Analyzing trace with hash 9643088, now seen corresponding path program 1 times [2024-11-02 12:27:39,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:27:39,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777657658] [2024-11-02 12:27:39,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:39,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:27:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:27:39,253 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-02 12:27:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-02 12:27:39,294 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-02 12:27:39,296 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-02 12:27:39,297 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-02 12:27:39,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-02 12:27:39,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:27:39,307 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-02 12:27:39,324 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-02 12:27:39,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 12:27:39 BoogieIcfgContainer [2024-11-02 12:27:39,335 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-02 12:27:39,337 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-02 12:27:39,337 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-02 12:27:39,337 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-02 12:27:39,338 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:38" (3/4) ... [2024-11-02 12:27:39,341 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-02 12:27:39,342 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-02 12:27:39,348 INFO L158 Benchmark]: Toolchain (without parser) took 2051.17ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 82.1MB in the beginning and 69.4MB in the end (delta: 12.7MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. [2024-11-02 12:27:39,349 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 123.7MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:27:39,349 INFO L158 Benchmark]: CACSL2BoogieTranslator took 398.03ms. Allocated memory is still 123.7MB. Free memory was 81.7MB in the beginning and 65.7MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-02 12:27:39,350 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.02ms. Allocated memory is still 123.7MB. Free memory was 65.7MB in the beginning and 63.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:27:39,351 INFO L158 Benchmark]: Boogie Preprocessor took 59.31ms. Allocated memory is still 123.7MB. Free memory was 63.7MB in the beginning and 62.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-02 12:27:39,351 INFO L158 Benchmark]: RCFGBuilder took 1124.05ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 62.0MB in the beginning and 85.0MB in the end (delta: -23.1MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2024-11-02 12:27:39,352 INFO L158 Benchmark]: TraceAbstraction took 377.77ms. Allocated memory is still 148.9MB. Free memory was 84.1MB in the beginning and 70.4MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-02 12:27:39,352 INFO L158 Benchmark]: Witness Printer took 5.27ms. Allocated memory is still 148.9MB. Free memory was 70.4MB in the beginning and 69.4MB in the end (delta: 953.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-02 12:27:39,365 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 123.7MB. Free memory is still 68.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 398.03ms. Allocated memory is still 123.7MB. Free memory was 81.7MB in the beginning and 65.7MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.02ms. Allocated memory is still 123.7MB. Free memory was 65.7MB in the beginning and 63.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.31ms. Allocated memory is still 123.7MB. Free memory was 63.7MB in the beginning and 62.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1124.05ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 62.0MB in the beginning and 85.0MB in the end (delta: -23.1MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * TraceAbstraction took 377.77ms. Allocated memory is still 148.9MB. Free memory was 84.1MB in the beginning and 70.4MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.27ms. Allocated memory is still 148.9MB. Free memory was 70.4MB in the beginning and 69.4MB in the end (delta: 953.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L320] COND TRUE __VERIFIER_nondet_int() [L321] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L47] COND TRUE !(result >= 0.0f && result < 1.39844f) [L48] reach_error() - UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-02 12:27:39,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2 --witnessprinter.witness.filename witness --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 52e7e3a0d80d0519558794c69b54bf5c07c5549c1d780651d891121aff50735c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:27:41,987 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:27:42,108 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-02 12:27:42,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:27:42,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:27:42,158 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:27:42,159 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:27:42,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:27:42,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:27:42,162 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:27:42,163 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:27:42,163 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:27:42,164 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:27:42,164 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:27:42,166 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:27:42,167 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:27:42,168 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:27:42,168 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:27:42,172 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:27:42,173 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:27:42,173 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:27:42,174 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:27:42,174 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:27:42,175 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:27:42,175 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:27:42,175 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-02 12:27:42,176 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:27:42,176 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-02 12:27:42,176 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:27:42,177 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:27:42,177 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:27:42,177 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:27:42,178 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-02 12:27:42,178 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:27:42,178 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:27:42,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:42,179 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:27:42,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:27:42,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:27:42,180 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-02 12:27:42,181 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-02 12:27:42,182 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:27:42,183 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:27:42,183 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:27:42,184 INFO L153 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_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52e7e3a0d80d0519558794c69b54bf5c07c5549c1d780651d891121aff50735c [2024-11-02 12:27:42,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:27:42,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:27:42,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:27:42,650 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:27:42,650 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:27:42,652 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c Unable to find full path for "g++" [2024-11-02 12:27:44,913 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:27:45,190 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:27:45,192 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c [2024-11-02 12:27:45,209 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/data/1eeb89bfc/7d41473433824e3ca118578daff55a4f/FLAG5f0f8e847 [2024-11-02 12:27:45,485 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/data/1eeb89bfc/7d41473433824e3ca118578daff55a4f [2024-11-02 12:27:45,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:27:45,489 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:27:45,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:45,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:27:45,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:27:45,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:45" (1/1) ... [2024-11-02 12:27:45,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be8c884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:45, skipping insertion in model container [2024-11-02 12:27:45,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:27:45" (1/1) ... [2024-11-02 12:27:45,533 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:27:45,801 WARN L251 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_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[1999,2012] [2024-11-02 12:27:45,810 WARN L251 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_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[2368,2381] [2024-11-02 12:27:45,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:45,944 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:27:45,979 WARN L251 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_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[1999,2012] [2024-11-02 12:27:45,988 WARN L251 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_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/sv-benchmarks/c/combinations/square_4+soft_float_3a.c.cil.c[2368,2381] [2024-11-02 12:27:46,036 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:27:46,062 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:27:46,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:46 WrapperNode [2024-11-02 12:27:46,063 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:27:46,064 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:46,064 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:27:46,065 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:27:46,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:46" (1/1) ... [2024-11-02 12:27:46,091 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:46" (1/1) ... [2024-11-02 12:27:46,128 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 132 [2024-11-02 12:27:46,133 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:27:46,134 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:27:46,134 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:27:46,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:27:46,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:46" (1/1) ... [2024-11-02 12:27:46,144 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:46" (1/1) ... [2024-11-02 12:27:46,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:46" (1/1) ... [2024-11-02 12:27:46,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:46" (1/1) ... [2024-11-02 12:27:46,159 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:46" (1/1) ... [2024-11-02 12:27:46,164 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:46" (1/1) ... [2024-11-02 12:27:46,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:46" (1/1) ... [2024-11-02 12:27:46,168 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:46" (1/1) ... [2024-11-02 12:27:46,172 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:27:46,177 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:27:46,178 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:27:46,178 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:27:46,179 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:46" (1/1) ... [2024-11-02 12:27:46,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:27:46,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:27:46,212 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:27:46,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:27:46,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:27:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-02 12:27:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-02 12:27:46,244 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-02 12:27:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:27:46,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:27:46,244 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-02 12:27:46,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-02 12:27:46,330 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:27:46,332 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:27:49,199 INFO L? ?]: Removed 58 outVars from TransFormulas that were not future-live. [2024-11-02 12:27:49,200 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:27:49,221 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:27:49,221 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:27:49,222 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:49 BoogieIcfgContainer [2024-11-02 12:27:49,222 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:27:49,224 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:27:49,224 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:27:49,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:27:49,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:27:45" (1/3) ... [2024-11-02 12:27:49,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcbc1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:49, skipping insertion in model container [2024-11-02 12:27:49,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:27:46" (2/3) ... [2024-11-02 12:27:49,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bcbc1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:27:49, skipping insertion in model container [2024-11-02 12:27:49,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:27:49" (3/3) ... [2024-11-02 12:27:49,232 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_3a.c.cil.c [2024-11-02 12:27:49,251 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:27:49,252 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-02 12:27:49,332 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:27:49,337 INFO L333 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@1b0791b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:27:49,337 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-02 12:27:49,341 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-02 12:27:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:27:49,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:49,348 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:49,348 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:49,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:49,353 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2024-11-02 12:27:49,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:27:49,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328898530] [2024-11-02 12:27:49,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:49,365 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 [2024-11-02 12:27:49,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:27:49,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:27:49,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:27:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:27:49,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-02 12:27:49,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:27:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:27:49,894 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:27:49,895 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-02 12:27:49,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328898530] [2024-11-02 12:27:49,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328898530] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:27:49,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:27:49,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:27:49,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484042869] [2024-11-02 12:27:49,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:27:49,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:27:49,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-02 12:27:49,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:27:49,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:27:49,931 INFO L87 Difference]: Start difference. First operand has 60 states, 50 states have (on average 1.56) internal successors, (78), 53 states have internal predecessors, (78), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-02 12:27:49,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:27:49,959 INFO L93 Difference]: Finished difference Result 115 states and 173 transitions. [2024-11-02 12:27:49,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:27:49,961 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-02 12:27:49,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:27:49,968 INFO L225 Difference]: With dead ends: 115 [2024-11-02 12:27:49,968 INFO L226 Difference]: Without dead ends: 51 [2024-11-02 12:27:49,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:27:49,975 INFO L432 NwaCegarLoop]: 81 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, 81 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 [2024-11-02 12:27:49,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:27:49,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-02 12:27:50,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-02 12:27:50,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.4186046511627908) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:27:50,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2024-11-02 12:27:50,010 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 7 [2024-11-02 12:27:50,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:27:50,011 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2024-11-02 12:27:50,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-02 12:27:50,011 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2024-11-02 12:27:50,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-02 12:27:50,012 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:27:50,012 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:27:50,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:27:50,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/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 [2024-11-02 12:27:50,214 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:27:50,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:27:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2024-11-02 12:27:50,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-02 12:27:50,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583506993] [2024-11-02 12:27:50,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:27:50,218 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 [2024-11-02 12:27:50,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/mathsat [2024-11-02 12:27:50,226 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/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) [2024-11-02 12:27:50,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c9814b50-ffbc-4e26-ade6-3c3c8d9c4101/bin/utaipan-verify-DbMuA5NWw2/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