./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_1_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh --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 51dae543cdeecc21d2596d81d8a0111e0d035dad0e8735c007db6660549676ee --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:24:45,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:24:45,729 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 12:24:45,734 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:24:45,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:24:45,769 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:24:45,769 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:24:45,770 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:24:45,770 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:24:45,771 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:24:45,772 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:24:45,772 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:24:45,773 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:24:45,773 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:24:45,774 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:24:45,774 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:24:45,775 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:24:45,775 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:24:45,776 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:24:45,776 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:24:45,777 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:24:45,778 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:24:45,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:24:45,779 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:24:45,779 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:24:45,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:24:45,780 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:24:45,781 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:24:45,781 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:24:45,782 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:24:45,782 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:24:45,782 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:24:45,783 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:24:45,783 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:24:45,783 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:24:45,783 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:24:45,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:24:45,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:24:45,784 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:24:45,784 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:24:45,784 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:24:45,785 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:24:45,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:24:45,785 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:24:45,785 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:24:45,786 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:24:45,786 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:24:45,786 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_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51dae543cdeecc21d2596d81d8a0111e0d035dad0e8735c007db6660549676ee [2023-12-02 12:24:46,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:24:46,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:24:46,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:24:46,035 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:24:46,036 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:24:46,037 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/combinations/gcd_3+newton_1_4.i [2023-12-02 12:24:49,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:24:49,421 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:24:49,421 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i [2023-12-02 12:24:49,429 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/data/1f1189e31/98842d6deb7540a1b1ee4892c95187c2/FLAGd8f359d48 [2023-12-02 12:24:49,442 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/data/1f1189e31/98842d6deb7540a1b1ee4892c95187c2 [2023-12-02 12:24:49,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:24:49,445 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:24:49,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:24:49,447 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:24:49,453 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:24:49,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:24:49" (1/1) ... [2023-12-02 12:24:49,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a7db8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49, skipping insertion in model container [2023-12-02 12:24:49,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:24:49" (1/1) ... [2023-12-02 12:24:49,487 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:24:49,661 WARN L240 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_e9567139-5d80-46ad-a5ec-b81ac54356f8/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[1226,1239] [2023-12-02 12:24:49,688 WARN L240 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_e9567139-5d80-46ad-a5ec-b81ac54356f8/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[2820,2833] [2023-12-02 12:24:49,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:24:49,702 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:24:49,719 WARN L240 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_e9567139-5d80-46ad-a5ec-b81ac54356f8/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[1226,1239] [2023-12-02 12:24:49,732 WARN L240 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_e9567139-5d80-46ad-a5ec-b81ac54356f8/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[2820,2833] [2023-12-02 12:24:49,734 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:24:49,754 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:24:49,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49 WrapperNode [2023-12-02 12:24:49,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:24:49,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:24:49,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:24:49,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:24:49,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2023-12-02 12:24:49,776 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2023-12-02 12:24:49,804 INFO L138 Inliner]: procedures = 27, calls = 22, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 89 [2023-12-02 12:24:49,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:24:49,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:24:49,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:24:49,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:24:49,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2023-12-02 12:24:49,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2023-12-02 12:24:49,820 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2023-12-02 12:24:49,820 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2023-12-02 12:24:49,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2023-12-02 12:24:49,831 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2023-12-02 12:24:49,833 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2023-12-02 12:24:49,835 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2023-12-02 12:24:49,838 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:24:49,839 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:24:49,839 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:24:49,839 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:24:49,840 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (1/1) ... [2023-12-02 12:24:49,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:24:49,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:24:49,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:24:49,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:24:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:24:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:24:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:24:49,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:24:49,998 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:24:50,001 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:24:50,187 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:24:50,274 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:24:50,274 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 12:24:50,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:24:50 BoogieIcfgContainer [2023-12-02 12:24:50,277 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:24:50,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:24:50,280 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:24:50,284 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:24:50,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:24:49" (1/3) ... [2023-12-02 12:24:50,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427ed434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:24:50, skipping insertion in model container [2023-12-02 12:24:50,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:49" (2/3) ... [2023-12-02 12:24:50,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@427ed434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:24:50, skipping insertion in model container [2023-12-02 12:24:50,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:24:50" (3/3) ... [2023-12-02 12:24:50,288 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_4.i [2023-12-02 12:24:50,307 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:24:50,307 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 12:24:50,358 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:24:50,365 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=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;@589946b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:24:50,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 12:24:50,370 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:24:50,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 12:24:50,376 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:24:50,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 12:24:50,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:24:50,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:24:50,384 INFO L85 PathProgramCache]: Analyzing trace with hash 3425227, now seen corresponding path program 1 times [2023-12-02 12:24:50,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:24:50,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725845236] [2023-12-02 12:24:50,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:24:50,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:24:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:24:50,510 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 12:24:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:24:50,548 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 12:24:50,550 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 12:24:50,552 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-02 12:24:50,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-02 12:24:50,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:24:50,559 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 12:24:50,563 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:24:50,583 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:24:50 BoogieIcfgContainer [2023-12-02 12:24:50,583 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:24:50,584 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:24:50,584 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:24:50,584 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:24:50,585 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:24:50" (3/4) ... [2023-12-02 12:24:50,588 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 12:24:50,589 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:24:50,591 INFO L158 Benchmark]: Toolchain (without parser) took 1145.30ms. Allocated memory is still 172.0MB. Free memory was 129.4MB in the beginning and 84.8MB in the end (delta: 44.6MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2023-12-02 12:24:50,592 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 172.0MB. Free memory was 137.9MB in the beginning and 137.7MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:24:50,593 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.96ms. Allocated memory is still 172.0MB. Free memory was 129.4MB in the beginning and 117.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 12:24:50,593 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.06ms. Allocated memory is still 172.0MB. Free memory was 117.9MB in the beginning and 115.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:24:50,594 INFO L158 Benchmark]: Boogie Preprocessor took 32.29ms. Allocated memory is still 172.0MB. Free memory was 115.7MB in the beginning and 114.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:24:50,595 INFO L158 Benchmark]: RCFGBuilder took 438.06ms. Allocated memory is still 172.0MB. Free memory was 114.2MB in the beginning and 99.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 12:24:50,596 INFO L158 Benchmark]: TraceAbstraction took 303.22ms. Allocated memory is still 172.0MB. Free memory was 98.5MB in the beginning and 84.8MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 12:24:50,596 INFO L158 Benchmark]: Witness Printer took 5.67ms. Allocated memory is still 172.0MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:24:50,600 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 172.0MB. Free memory was 137.9MB in the beginning and 137.7MB in the end (delta: 160.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.96ms. Allocated memory is still 172.0MB. Free memory was 129.4MB in the beginning and 117.9MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.06ms. Allocated memory is still 172.0MB. Free memory was 117.9MB in the beginning and 115.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.29ms. Allocated memory is still 172.0MB. Free memory was 115.7MB in the beginning and 114.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 438.06ms. Allocated memory is still 172.0MB. Free memory was 114.2MB in the beginning and 99.0MB in the end (delta: 15.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 303.22ms. Allocated memory is still 172.0MB. Free memory was 98.5MB in the beginning and 84.8MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.67ms. Allocated memory is still 172.0MB. Free memory is still 84.8MB. 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: 102]: 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 91, overapproximation of someBinaryDOUBLEComparisonOperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 80. Possible FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) [L102] reach_error() - UnprovableResult [Line: 27]: 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 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=15occurred 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 [2023-12-02 12:24:50,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/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_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh --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 51dae543cdeecc21d2596d81d8a0111e0d035dad0e8735c007db6660549676ee --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:24:52,745 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:24:52,833 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 12:24:52,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:24:52,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:24:52,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:24:52,875 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:24:52,875 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:24:52,876 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:24:52,877 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:24:52,877 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:24:52,878 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:24:52,879 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:24:52,880 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:24:52,880 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:24:52,881 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:24:52,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:24:52,883 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:24:52,883 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:24:52,884 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:24:52,885 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:24:52,885 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:24:52,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:24:52,887 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:24:52,887 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 12:24:52,888 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 12:24:52,888 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 12:24:52,889 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:24:52,889 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:24:52,890 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:24:52,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:24:52,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 12:24:52,891 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:24:52,892 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:24:52,892 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:24:52,892 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:24:52,893 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:24:52,893 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:24:52,893 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 12:24:52,893 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 12:24:52,894 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:24:52,894 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:24:52,894 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:24:52,894 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:24:52,895 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_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 51dae543cdeecc21d2596d81d8a0111e0d035dad0e8735c007db6660549676ee [2023-12-02 12:24:53,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:24:53,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:24:53,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:24:53,275 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:24:53,275 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:24:53,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/combinations/gcd_3+newton_1_4.i [2023-12-02 12:24:56,557 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:24:56,789 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:24:56,791 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i [2023-12-02 12:24:56,802 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/data/23c8c43e3/c972480967b340369cc670dd37224568/FLAG5422f99f2 [2023-12-02 12:24:56,820 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/data/23c8c43e3/c972480967b340369cc670dd37224568 [2023-12-02 12:24:56,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:24:56,826 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:24:56,827 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:24:56,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:24:56,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:24:56,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:24:56" (1/1) ... [2023-12-02 12:24:56,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc96a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:56, skipping insertion in model container [2023-12-02 12:24:56,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:24:56" (1/1) ... [2023-12-02 12:24:56,868 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:24:57,055 WARN L240 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_e9567139-5d80-46ad-a5ec-b81ac54356f8/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[1226,1239] [2023-12-02 12:24:57,087 WARN L240 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_e9567139-5d80-46ad-a5ec-b81ac54356f8/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[2820,2833] [2023-12-02 12:24:57,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:24:57,107 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:24:57,124 WARN L240 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_e9567139-5d80-46ad-a5ec-b81ac54356f8/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[1226,1239] [2023-12-02 12:24:57,140 WARN L240 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_e9567139-5d80-46ad-a5ec-b81ac54356f8/sv-benchmarks/c/combinations/gcd_3+newton_1_4.i[2820,2833] [2023-12-02 12:24:57,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:24:57,162 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:24:57,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:57 WrapperNode [2023-12-02 12:24:57,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:24:57,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:24:57,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:24:57,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:24:57,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:57" (1/1) ... [2023-12-02 12:24:57,185 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:57" (1/1) ... [2023-12-02 12:24:57,214 INFO L138 Inliner]: procedures = 28, calls = 22, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 84 [2023-12-02 12:24:57,215 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:24:57,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:24:57,216 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:24:57,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:24:57,226 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:57" (1/1) ... [2023-12-02 12:24:57,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:57" (1/1) ... [2023-12-02 12:24:57,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:57" (1/1) ... [2023-12-02 12:24:57,232 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:57" (1/1) ... [2023-12-02 12:24:57,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:57" (1/1) ... [2023-12-02 12:24:57,247 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:57" (1/1) ... [2023-12-02 12:24:57,250 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:57" (1/1) ... [2023-12-02 12:24:57,252 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:57" (1/1) ... [2023-12-02 12:24:57,257 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:24:57,258 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:24:57,259 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:24:57,259 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:24:57,260 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:57" (1/1) ... [2023-12-02 12:24:57,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:24:57,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:24:57,293 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:24:57,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:24:57,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:24:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 12:24:57,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:24:57,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:24:57,428 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:24:57,431 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:25:04,497 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:25:04,532 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:25:04,533 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 12:25:04,533 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:25:04 BoogieIcfgContainer [2023-12-02 12:25:04,533 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:25:04,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:25:04,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:25:04,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:25:04,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:24:56" (1/3) ... [2023-12-02 12:25:04,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56cafa5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:25:04, skipping insertion in model container [2023-12-02 12:25:04,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:24:57" (2/3) ... [2023-12-02 12:25:04,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56cafa5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:25:04, skipping insertion in model container [2023-12-02 12:25:04,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:25:04" (3/3) ... [2023-12-02 12:25:04,542 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_1_4.i [2023-12-02 12:25:04,555 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:25:04,555 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 12:25:04,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:25:04,599 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=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;@269f82ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:25:04,599 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 12:25:04,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:25:04,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 12:25:04,608 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:25:04,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 12:25:04,609 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:25:04,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:25:04,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1037804606, now seen corresponding path program 1 times [2023-12-02 12:25:04,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:25:04,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852982777] [2023-12-02 12:25:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:25:04,624 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 [2023-12-02 12:25:04,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:25:04,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 12:25:04,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 12:25:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:25:05,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 12:25:05,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:25:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:25:05,581 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:25:05,582 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:25:05,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852982777] [2023-12-02 12:25:05,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852982777] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:25:05,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:25:05,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:25:05,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858045323] [2023-12-02 12:25:05,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:25:05,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 12:25:05,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:25:05,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 12:25:05,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:25:05,618 INFO L87 Difference]: Start difference. First operand has 20 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:25:10,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.60s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:25:10,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:25:10,921 INFO L93 Difference]: Finished difference Result 34 states and 44 transitions. [2023-12-02 12:25:10,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 12:25:10,924 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 12:25:10,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:25:10,931 INFO L225 Difference]: With dead ends: 34 [2023-12-02 12:25:10,931 INFO L226 Difference]: Without dead ends: 15 [2023-12-02 12:25:10,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:25:10,938 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:25:10,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-12-02 12:25:10,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-12-02 12:25:10,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-12-02 12:25:10,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 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) [2023-12-02 12:25:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-12-02 12:25:10,968 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 6 [2023-12-02 12:25:10,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:25:10,969 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-12-02 12:25:10,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 12:25:10,970 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-12-02 12:25:10,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 12:25:10,970 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:25:10,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 12:25:10,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:25:11,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 12:25:11,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:25:11,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:25:11,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1037745024, now seen corresponding path program 1 times [2023-12-02 12:25:11,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:25:11,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564017138] [2023-12-02 12:25:11,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:25:11,178 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 [2023-12-02 12:25:11,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:25:11,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 12:25:11,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 12:26:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:26:55,362 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 12:27:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:27:27,643 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 12:27:27,644 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 12:27:27,645 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-02 12:27:27,647 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-02 12:27:27,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 12:27:27,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 12:27:27,850 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 12:27:27,852 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:27:27,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:27:27 BoogieIcfgContainer [2023-12-02 12:27:27,868 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:27:27,869 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:27:27,869 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:27:27,869 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:27:27,870 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:25:04" (3/4) ... [2023-12-02 12:27:27,871 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 12:27:27,905 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 12:27:27,905 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:27:27,906 INFO L158 Benchmark]: Toolchain (without parser) took 151080.68ms. Allocated memory is still 100.7MB. Free memory was 77.0MB in the beginning and 48.2MB in the end (delta: 28.8MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2023-12-02 12:27:27,907 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 65.0MB. Free memory was 40.9MB in the beginning and 40.8MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:27:27,907 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.88ms. Allocated memory is still 100.7MB. Free memory was 76.7MB in the beginning and 64.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 12:27:27,908 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.40ms. Allocated memory is still 100.7MB. Free memory was 64.1MB in the beginning and 62.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:27:27,908 INFO L158 Benchmark]: Boogie Preprocessor took 41.25ms. Allocated memory is still 100.7MB. Free memory was 62.3MB in the beginning and 60.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:27:27,909 INFO L158 Benchmark]: RCFGBuilder took 7275.00ms. Allocated memory is still 100.7MB. Free memory was 60.5MB in the beginning and 75.5MB in the end (delta: -15.0MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2023-12-02 12:27:27,909 INFO L158 Benchmark]: TraceAbstraction took 143332.46ms. Allocated memory is still 100.7MB. Free memory was 75.3MB in the beginning and 50.2MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-02 12:27:27,910 INFO L158 Benchmark]: Witness Printer took 36.25ms. Allocated memory is still 100.7MB. Free memory was 50.2MB in the beginning and 48.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:27:27,912 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 65.0MB. Free memory was 40.9MB in the beginning and 40.8MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.88ms. Allocated memory is still 100.7MB. Free memory was 76.7MB in the beginning and 64.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.40ms. Allocated memory is still 100.7MB. Free memory was 64.1MB in the beginning and 62.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.25ms. Allocated memory is still 100.7MB. Free memory was 62.3MB in the beginning and 60.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 7275.00ms. Allocated memory is still 100.7MB. Free memory was 60.5MB in the beginning and 75.5MB in the end (delta: -15.0MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * TraceAbstraction took 143332.46ms. Allocated memory is still 100.7MB. Free memory was 75.3MB in the beginning and 50.2MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 36.25ms. Allocated memory is still 100.7MB. Free memory was 50.2MB in the beginning and 48.2MB in the end (delta: 2.0MB). 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 - CounterExampleResult [Line: 102]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L108] COND FALSE !(__VERIFIER_nondet_int()) [L111] CALL main2() [L90] float IN = __VERIFIER_nondet_float(); [L91] CALL assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L75] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L91] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [L93] CALL, EXPR f(IN) [L80] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L93] RET, EXPR f(IN) [L93] CALL, EXPR fp(IN) [L85] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L93] RET, EXPR fp(IN) [L93] float x = IN - f(IN)/fp(IN); [L101] COND TRUE !(x < 0.1) VAL [IN=-0.7458425164222717, x=0.17748922109603882] [L102] reach_error() VAL [IN=-0.7458425164222717, x=0.17748922109603882] - UnprovableResult [Line: 27]: 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 1 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 143.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 5.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 105.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 1 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 proved your program to be incorrect! [2023-12-02 12:27:28,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e9567139-5d80-46ad-a5ec-b81ac54356f8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE