./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c --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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 13801fa2c96f7c93ace2086dcc65f456b83ac056f84901412492a5919d95dd03 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:42:23,855 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:42:23,921 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 12:42:23,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:42:23,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:42:23,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:42:23,951 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:42:23,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:42:23,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:42:23,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:42:23,953 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:42:23,954 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:42:23,954 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:42:23,955 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:42:23,955 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:42:23,956 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:42:23,956 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:42:23,957 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:42:23,957 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:42:23,958 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:42:23,959 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:42:23,959 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:42:23,960 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:42:23,961 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:42:23,961 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:42:23,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:42:23,962 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:42:23,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:42:23,963 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:42:23,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:42:23,964 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:42:23,964 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:42:23,964 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:42:23,965 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:42:23,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:42:23,965 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:42:23,965 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:42:23,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:42:23,966 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:42:23,966 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:42:23,966 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:42:23,967 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:42:23,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:42:23,967 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:42:23,967 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:42:23,967 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:42:23,968 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:42:23,968 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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13801fa2c96f7c93ace2086dcc65f456b83ac056f84901412492a5919d95dd03 [2023-12-02 12:42:24,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:42:24,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:42:24,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:42:24,202 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:42:24,203 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:42:24,204 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c [2023-12-02 12:42:26,980 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:42:27,145 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:42:27,146 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c [2023-12-02 12:42:27,154 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/data/35e2bbd4f/628518183ccb46acb2606ee53fc6764d/FLAG72008306f [2023-12-02 12:42:27,166 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/data/35e2bbd4f/628518183ccb46acb2606ee53fc6764d [2023-12-02 12:42:27,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:42:27,169 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:42:27,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:42:27,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:42:27,176 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:42:27,176 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:42:27" (1/1) ... [2023-12-02 12:42:27,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3149e33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:27, skipping insertion in model container [2023-12-02 12:42:27,178 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:42:27" (1/1) ... [2023-12-02 12:42:27,213 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:42:27,349 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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[1995,2008] [2023-12-02 12:42:27,355 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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[2364,2377] [2023-12-02 12:42:27,401 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:42:27,409 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:42:27,423 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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[1995,2008] [2023-12-02 12:42:27,425 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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[2364,2377] [2023-12-02 12:42:27,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:42:27,475 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:42:27,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:27 WrapperNode [2023-12-02 12:42:27,475 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:42:27,476 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:42:27,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:42:27,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:42:27,484 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:27" (1/1) ... [2023-12-02 12:42:27,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:27" (1/1) ... [2023-12-02 12:42:27,521 INFO L138 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 209 [2023-12-02 12:42:27,521 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:42:27,522 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:42:27,522 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:42:27,522 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:42:27,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:27" (1/1) ... [2023-12-02 12:42:27,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:27" (1/1) ... [2023-12-02 12:42:27,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:27" (1/1) ... [2023-12-02 12:42:27,535 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:27" (1/1) ... [2023-12-02 12:42:27,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:27" (1/1) ... [2023-12-02 12:42:27,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:27" (1/1) ... [2023-12-02 12:42:27,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:27" (1/1) ... [2023-12-02 12:42:27,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:27" (1/1) ... [2023-12-02 12:42:27,557 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:42:27,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:42:27,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:42:27,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:42:27,559 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:27" (1/1) ... [2023-12-02 12:42:27,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:42:27,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:42:27,587 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:42:27,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:42:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:42:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-12-02 12:42:27,616 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-12-02 12:42:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:42:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:42:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:42:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 12:42:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 12:42:27,687 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:42:27,689 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:42:28,022 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:42:28,251 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:42:28,251 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 12:42:28,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:42:28 BoogieIcfgContainer [2023-12-02 12:42:28,253 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:42:28,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:42:28,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:42:28,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:42:28,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:42:27" (1/3) ... [2023-12-02 12:42:28,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7563ea62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:42:28, skipping insertion in model container [2023-12-02 12:42:28,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:27" (2/3) ... [2023-12-02 12:42:28,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7563ea62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:42:28, skipping insertion in model container [2023-12-02 12:42:28,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:42:28" (3/3) ... [2023-12-02 12:42:28,263 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_1-3a.c.cil.c [2023-12-02 12:42:28,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:42:28,283 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 12:42:28,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:42:28,333 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;@50ece568, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:42:28,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 12:42:28,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 43 states have internal predecessors, (60), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 12:42:28,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 12:42:28,342 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:28,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 12:42:28,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:28,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:28,347 INFO L85 PathProgramCache]: Analyzing trace with hash 12154117, now seen corresponding path program 1 times [2023-12-02 12:42:28,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:42:28,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333155819] [2023-12-02 12:42:28,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:28,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:42:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:42:28,428 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 12:42:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:42:28,453 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 12:42:28,455 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 12:42:28,456 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-02 12:42:28,457 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-02 12:42:28,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:42:28,462 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 12:42:28,466 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:42:28,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:42:28 BoogieIcfgContainer [2023-12-02 12:42:28,482 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:42:28,482 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:42:28,483 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:42:28,483 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:42:28,483 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:42:28" (3/4) ... [2023-12-02 12:42:28,486 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 12:42:28,487 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:42:28,488 INFO L158 Benchmark]: Toolchain (without parser) took 1318.84ms. Allocated memory was 142.6MB in the beginning and 188.7MB in the end (delta: 46.1MB). Free memory was 96.3MB in the beginning and 119.6MB in the end (delta: -23.3MB). Peak memory consumption was 26.2MB. Max. memory is 16.1GB. [2023-12-02 12:42:28,488 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 113.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:42:28,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.42ms. Allocated memory is still 142.6MB. Free memory was 96.3MB in the beginning and 81.2MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-12-02 12:42:28,490 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.85ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 79.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:42:28,490 INFO L158 Benchmark]: Boogie Preprocessor took 35.42ms. Allocated memory is still 142.6MB. Free memory was 79.1MB in the beginning and 77.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:42:28,491 INFO L158 Benchmark]: RCFGBuilder took 695.27ms. Allocated memory was 142.6MB in the beginning and 188.7MB in the end (delta: 46.1MB). Free memory was 77.0MB in the beginning and 134.3MB in the end (delta: -57.3MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2023-12-02 12:42:28,492 INFO L158 Benchmark]: TraceAbstraction took 225.65ms. Allocated memory is still 188.7MB. Free memory was 133.2MB in the beginning and 119.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 12:42:28,492 INFO L158 Benchmark]: Witness Printer took 4.54ms. Allocated memory is still 188.7MB. Free memory was 119.6MB in the beginning and 119.6MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:42:28,496 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 142.6MB. Free memory is still 113.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.42ms. Allocated memory is still 142.6MB. Free memory was 96.3MB in the beginning and 81.2MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.85ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 79.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.42ms. Allocated memory is still 142.6MB. Free memory was 79.1MB in the beginning and 77.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 695.27ms. Allocated memory was 142.6MB in the beginning and 188.7MB in the end (delta: 46.1MB). Free memory was 77.0MB in the beginning and 134.3MB in the end (delta: -57.3MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. * TraceAbstraction took 225.65ms. Allocated memory is still 188.7MB. Free memory was 133.2MB in the beginning and 119.6MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 4.54ms. Allocated memory is still 188.7MB. Free memory was 119.6MB in the beginning and 119.6MB in the end (delta: 2.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: [L402] COND TRUE __VERIFIER_nondet_int() [L403] 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; VAL [IN=53, x=53] [L47] COND TRUE !(result >= 0.0f && result < 1.5f) VAL [IN=53, x=53] [L48] reach_error() VAL [IN=53, x=53] - 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, 53 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=53occurred 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 12:42:28,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 13801fa2c96f7c93ace2086dcc65f456b83ac056f84901412492a5919d95dd03 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:42:30,339 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:42:30,415 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-12-02 12:42:30,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:42:30,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:42:30,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:42:30,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:42:30,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:42:30,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:42:30,447 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:42:30,448 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:42:30,448 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:42:30,449 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:42:30,450 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:42:30,450 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:42:30,451 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:42:30,452 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:42:30,452 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:42:30,453 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:42:30,453 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:42:30,454 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:42:30,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:42:30,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:42:30,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:42:30,458 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 12:42:30,458 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 12:42:30,458 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 12:42:30,459 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:42:30,459 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:42:30,459 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:42:30,460 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:42:30,460 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 12:42:30,460 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:42:30,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:42:30,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:42:30,461 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:42:30,461 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:42:30,461 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:42:30,462 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 12:42:30,462 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 12:42:30,462 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:42:30,462 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:42:30,463 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:42:30,463 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:42:30,463 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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13801fa2c96f7c93ace2086dcc65f456b83ac056f84901412492a5919d95dd03 [2023-12-02 12:42:30,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:42:30,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:42:30,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:42:30,760 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:42:30,760 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:42:30,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c [2023-12-02 12:42:33,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:42:33,748 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:42:33,749 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c [2023-12-02 12:42:33,758 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/data/89eef56f5/ca3b4794259a4f7f898ebee660699ca2/FLAG9689449aa [2023-12-02 12:42:33,769 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/data/89eef56f5/ca3b4794259a4f7f898ebee660699ca2 [2023-12-02 12:42:33,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:42:33,773 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:42:33,774 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:42:33,775 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:42:33,780 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:42:33,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:42:33" (1/1) ... [2023-12-02 12:42:33,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8378642 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:33, skipping insertion in model container [2023-12-02 12:42:33,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:42:33" (1/1) ... [2023-12-02 12:42:33,822 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:42:33,984 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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[1995,2008] [2023-12-02 12:42:33,990 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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[2364,2377] [2023-12-02 12:42:34,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:42:34,047 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:42:34,062 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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[1995,2008] [2023-12-02 12:42:34,064 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_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/sv-benchmarks/c/combinations/square_8+soft_float_1-3a.c.cil.c[2364,2377] [2023-12-02 12:42:34,092 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:42:34,109 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:42:34,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:34 WrapperNode [2023-12-02 12:42:34,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:42:34,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:42:34,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:42:34,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:42:34,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:34" (1/1) ... [2023-12-02 12:42:34,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:34" (1/1) ... [2023-12-02 12:42:34,163 INFO L138 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169 [2023-12-02 12:42:34,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:42:34,164 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:42:34,164 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:42:34,164 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:42:34,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:34" (1/1) ... [2023-12-02 12:42:34,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:34" (1/1) ... [2023-12-02 12:42:34,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:34" (1/1) ... [2023-12-02 12:42:34,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:34" (1/1) ... [2023-12-02 12:42:34,189 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:34" (1/1) ... [2023-12-02 12:42:34,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:34" (1/1) ... [2023-12-02 12:42:34,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:34" (1/1) ... [2023-12-02 12:42:34,198 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:34" (1/1) ... [2023-12-02 12:42:34,203 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:42:34,204 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:42:34,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:42:34,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:42:34,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:34" (1/1) ... [2023-12-02 12:42:34,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:42:34,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:42:34,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:42:34,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:42:34,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:42:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 12:42:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2023-12-02 12:42:34,269 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2023-12-02 12:42:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:42:34,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:42:34,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 12:42:34,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 12:42:34,353 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:42:34,355 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:42:36,826 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:42:36,851 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:42:36,851 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 12:42:36,852 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:42:36 BoogieIcfgContainer [2023-12-02 12:42:36,852 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:42:36,855 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:42:36,855 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:42:36,858 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:42:36,858 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:42:33" (1/3) ... [2023-12-02 12:42:36,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2457e520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:42:36, skipping insertion in model container [2023-12-02 12:42:36,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:42:34" (2/3) ... [2023-12-02 12:42:36,859 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2457e520 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:42:36, skipping insertion in model container [2023-12-02 12:42:36,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:42:36" (3/3) ... [2023-12-02 12:42:36,861 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_1-3a.c.cil.c [2023-12-02 12:42:36,879 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:42:36,880 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-12-02 12:42:36,923 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:42:36,929 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;@1eb4d1c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:42:36,929 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-12-02 12:42:36,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 61 states have (on average 1.639344262295082) internal successors, (100), 65 states have internal predecessors, (100), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 12:42:36,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 12:42:36,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:36,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 12:42:36,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:36,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:36,948 INFO L85 PathProgramCache]: Analyzing trace with hash 607753738, now seen corresponding path program 1 times [2023-12-02 12:42:36,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:42:36,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522657584] [2023-12-02 12:42:36,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:36,965 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 12:42:36,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:42:36,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:42:36,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:42:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:37,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 12:42:37,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:42:37,436 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 12:42:37,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:42:37,437 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:42:37,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522657584] [2023-12-02 12:42:37,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522657584] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:42:37,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:42:37,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:42:37,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439827982] [2023-12-02 12:42:37,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:42:37,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 12:42:37,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:42:37,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 12:42:37,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:42:37,471 INFO L87 Difference]: Start difference. First operand has 75 states, 61 states have (on average 1.639344262295082) internal successors, (100), 65 states have internal predecessors, (100), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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 12:42:37,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:42:37,524 INFO L93 Difference]: Finished difference Result 146 states and 238 transitions. [2023-12-02 12:42:37,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 12:42:37,527 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 12:42:37,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:42:37,535 INFO L225 Difference]: With dead ends: 146 [2023-12-02 12:42:37,535 INFO L226 Difference]: Without dead ends: 71 [2023-12-02 12:42:37,539 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 12:42:37,542 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:42:37,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 105 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:42:37,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-12-02 12:42:37,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2023-12-02 12:42:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 58 states have (on average 1.5172413793103448) internal successors, (88), 61 states have internal predecessors, (88), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 12:42:37,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 105 transitions. [2023-12-02 12:42:37,585 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 105 transitions. Word has length 6 [2023-12-02 12:42:37,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:42:37,585 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 105 transitions. [2023-12-02 12:42:37,586 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 12:42:37,586 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 105 transitions. [2023-12-02 12:42:37,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 12:42:37,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:42:37,587 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 12:42:37,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:42:37,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:42:37,794 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:42:37,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:42:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash 607813320, now seen corresponding path program 1 times [2023-12-02 12:42:37,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:42:37,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083384333] [2023-12-02 12:42:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:42:37,796 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 12:42:37,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:42:37,797 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:42:37,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:42:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:42:50,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:42:50,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:43:05,171 WARN L854 $PredicateComparison]: unable to prove that (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2023-12-02 12:43:38,901 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from false [2023-12-02 12:43:40,953 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0))) (.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0))) (or (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))) (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (_ +zero 8 24))) (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0))))) is different from true [2023-12-02 12:43:40,954 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 12:43:40,954 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:43:40,954 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:43:40,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083384333] [2023-12-02 12:43:40,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083384333] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:40,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:40,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:43:40,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355636995] [2023-12-02 12:43:40,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:40,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 12:43:40,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:43:40,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 12:43:40,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2023-12-02 12:43:40,958 INFO L87 Difference]: Start difference. First operand 71 states and 105 transitions. Second operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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 12:43:43,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:43:45,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 12:43:47,471 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (exists ((|ULTIMATE.start_main1_~IN~0#1| (_ FloatingPoint 8 24))) (and (fp.lt |ULTIMATE.start_main1_~IN~0#1| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|) |ULTIMATE.start_main1_~IN~0#1|)) |c_ULTIMATE.start_main1_~result~0#1|) (fp.geq |ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)))) (fp.lt |c_ULTIMATE.start_main1_~IN~0#1| .cse0) (fp.geq |c_ULTIMATE.start_main1_~IN~0#1| (_ +zero 8 24)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2023-12-02 12:43:47,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:47,795 INFO L93 Difference]: Finished difference Result 71 states and 105 transitions. [2023-12-02 12:43:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 12:43:47,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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 12:43:47,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:47,798 INFO L225 Difference]: With dead ends: 71 [2023-12-02 12:43:47,798 INFO L226 Difference]: Without dead ends: 66 [2023-12-02 12:43:47,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=20, Invalid=18, Unknown=4, NotChecked=30, Total=72 [2023-12-02 12:43:47,800 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 101 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:47,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 257 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 2 Unknown, 210 Unchecked, 4.6s Time] [2023-12-02 12:43:47,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-12-02 12:43:47,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-12-02 12:43:47,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.537037037037037) internal successors, (83), 56 states have internal predecessors, (83), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 12:43:47,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 100 transitions. [2023-12-02 12:43:47,812 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 100 transitions. Word has length 6 [2023-12-02 12:43:47,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:47,813 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 100 transitions. [2023-12-02 12:43:47,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 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 12:43:47,813 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 100 transitions. [2023-12-02 12:43:47,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 12:43:47,815 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:47,815 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:47,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:48,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:48,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:48,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:48,016 INFO L85 PathProgramCache]: Analyzing trace with hash 830722296, now seen corresponding path program 1 times [2023-12-02 12:43:48,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:43:48,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660999288] [2023-12-02 12:43:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:48,018 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 12:43:48,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:43:48,019 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:48,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (4)] Waiting until timeout for monitored process [2023-12-02 12:43:48,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:48,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 12:43:48,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:43:48,347 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:43:48,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:43:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:43:48,557 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:43:48,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660999288] [2023-12-02 12:43:48,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660999288] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:43:48,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1449907651] [2023-12-02 12:43:48,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:48,558 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 12:43:48,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 12:43:48,560 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 12:43:48,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-02 12:43:48,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:48,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:43:48,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:43:49,121 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:43:49,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:43:49,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:43:49,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1449907651] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:43:49,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614400454] [2023-12-02 12:43:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:49,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:43:49,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:43:49,361 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:43:49,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 12:43:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:49,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:43:49,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:43:49,560 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:43:49,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:43:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:43:49,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614400454] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:43:49,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 12:43:49,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 10 [2023-12-02 12:43:49,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693385941] [2023-12-02 12:43:49,784 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 12:43:49,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 12:43:49,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:43:49,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 12:43:49,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-12-02 12:43:49,787 INFO L87 Difference]: Start difference. First operand 66 states and 100 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 12:43:52,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:52,346 INFO L93 Difference]: Finished difference Result 229 states and 367 transitions. [2023-12-02 12:43:52,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 12:43:52,346 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 29 [2023-12-02 12:43:52,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:52,350 INFO L225 Difference]: With dead ends: 229 [2023-12-02 12:43:52,350 INFO L226 Difference]: Without dead ends: 185 [2023-12-02 12:43:52,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-12-02 12:43:52,352 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 140 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:52,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1118 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 12:43:52,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-02 12:43:52,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 108. [2023-12-02 12:43:52,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 89 states have (on average 1.449438202247191) internal successors, (129), 90 states have internal predecessors, (129), 15 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (21), 17 states have call predecessors, (21), 14 states have call successors, (21) [2023-12-02 12:43:52,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 165 transitions. [2023-12-02 12:43:52,368 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 165 transitions. Word has length 29 [2023-12-02 12:43:52,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:52,369 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 165 transitions. [2023-12-02 12:43:52,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-12-02 12:43:52,369 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 165 transitions. [2023-12-02 12:43:52,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 12:43:52,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:52,371 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:52,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-12-02 12:43:52,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (4)] Ended with exit code 0 [2023-12-02 12:43:52,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 12:43:52,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:43:52,972 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:52,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:52,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2032061427, now seen corresponding path program 1 times [2023-12-02 12:43:52,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:43:52,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327410438] [2023-12-02 12:43:52,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:52,973 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 12:43:52,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:43:52,974 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:52,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (7)] Waiting until timeout for monitored process [2023-12-02 12:43:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:53,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 12:43:53,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:43:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:43:53,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:43:53,246 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:43:53,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327410438] [2023-12-02 12:43:53,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327410438] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:53,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:53,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 12:43:53,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169562507] [2023-12-02 12:43:53,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:53,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:43:53,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:43:53,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:43:53,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:43:53,248 INFO L87 Difference]: Start difference. First operand 108 states and 165 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:43:53,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:53,763 INFO L93 Difference]: Finished difference Result 240 states and 368 transitions. [2023-12-02 12:43:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:43:53,764 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2023-12-02 12:43:53,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:53,766 INFO L225 Difference]: With dead ends: 240 [2023-12-02 12:43:53,766 INFO L226 Difference]: Without dead ends: 181 [2023-12-02 12:43:53,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:43:53,767 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 50 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:53,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 420 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 12:43:53,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-02 12:43:53,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 177. [2023-12-02 12:43:53,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 151 states have (on average 1.4370860927152318) internal successors, (217), 150 states have internal predecessors, (217), 22 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (28), 28 states have call predecessors, (28), 21 states have call successors, (28) [2023-12-02 12:43:53,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 267 transitions. [2023-12-02 12:43:53,790 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 267 transitions. Word has length 37 [2023-12-02 12:43:53,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:53,790 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 267 transitions. [2023-12-02 12:43:53,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:43:53,791 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 267 transitions. [2023-12-02 12:43:53,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-12-02 12:43:53,794 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:53,794 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:53,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (7)] Ended with exit code 0 [2023-12-02 12:43:53,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:53,997 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:53,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:53,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1352003057, now seen corresponding path program 1 times [2023-12-02 12:43:53,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:43:53,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074463554] [2023-12-02 12:43:53,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:53,998 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 12:43:53,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:43:53,999 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:54,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (8)] Waiting until timeout for monitored process [2023-12-02 12:43:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:54,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:43:54,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:43:54,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:43:54,402 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:43:54,402 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:43:54,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074463554] [2023-12-02 12:43:54,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074463554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:54,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:54,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 12:43:54,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758936260] [2023-12-02 12:43:54,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:54,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 12:43:54,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:43:54,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 12:43:54,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:43:54,404 INFO L87 Difference]: Start difference. First operand 177 states and 267 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:43:55,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:55,073 INFO L93 Difference]: Finished difference Result 226 states and 338 transitions. [2023-12-02 12:43:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 12:43:55,074 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2023-12-02 12:43:55,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:55,076 INFO L225 Difference]: With dead ends: 226 [2023-12-02 12:43:55,076 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 12:43:55,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-02 12:43:55,079 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 39 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:55,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 494 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 12:43:55,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 12:43:55,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2023-12-02 12:43:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 145 states have (on average 1.4137931034482758) internal successors, (205), 144 states have internal predecessors, (205), 19 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (25), 25 states have call predecessors, (25), 18 states have call successors, (25) [2023-12-02 12:43:55,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 249 transitions. [2023-12-02 12:43:55,092 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 249 transitions. Word has length 37 [2023-12-02 12:43:55,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:55,092 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 249 transitions. [2023-12-02 12:43:55,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:43:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 249 transitions. [2023-12-02 12:43:55,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 12:43:55,094 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:55,094 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:55,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (8)] Ended with exit code 0 [2023-12-02 12:43:55,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:55,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:55,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:55,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1128483641, now seen corresponding path program 1 times [2023-12-02 12:43:55,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:43:55,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1231901219] [2023-12-02 12:43:55,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:55,298 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 12:43:55,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:43:55,299 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:55,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (9)] Waiting until timeout for monitored process [2023-12-02 12:43:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:55,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:43:55,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:43:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:43:55,506 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:43:55,507 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:43:55,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1231901219] [2023-12-02 12:43:55,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1231901219] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:55,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:55,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:43:55,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2621018] [2023-12-02 12:43:55,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:55,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:43:55,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:43:55,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:43:55,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:43:55,509 INFO L87 Difference]: Start difference. First operand 168 states and 249 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:43:55,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:55,689 INFO L93 Difference]: Finished difference Result 311 states and 467 transitions. [2023-12-02 12:43:55,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:43:55,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2023-12-02 12:43:55,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:55,693 INFO L225 Difference]: With dead ends: 311 [2023-12-02 12:43:55,693 INFO L226 Difference]: Without dead ends: 245 [2023-12-02 12:43:55,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:43:55,694 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 65 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:55,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 327 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:43:55,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-12-02 12:43:55,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 213. [2023-12-02 12:43:55,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 187 states have (on average 1.374331550802139) internal successors, (257), 186 states have internal predecessors, (257), 22 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (28), 28 states have call predecessors, (28), 21 states have call successors, (28) [2023-12-02 12:43:55,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 307 transitions. [2023-12-02 12:43:55,710 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 307 transitions. Word has length 39 [2023-12-02 12:43:55,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:55,711 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 307 transitions. [2023-12-02 12:43:55,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:43:55,711 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 307 transitions. [2023-12-02 12:43:55,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 12:43:55,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:55,714 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:55,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (9)] Ended with exit code 0 [2023-12-02 12:43:55,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:55,917 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:55,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:55,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1745798990, now seen corresponding path program 1 times [2023-12-02 12:43:55,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:43:55,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869631071] [2023-12-02 12:43:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:55,918 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 12:43:55,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:43:55,919 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:55,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (10)] Waiting until timeout for monitored process [2023-12-02 12:43:55,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:55,965 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:43:55,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:43:56,117 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:43:56,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:43:56,118 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:43:56,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869631071] [2023-12-02 12:43:56,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869631071] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:56,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:56,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:43:56,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924389770] [2023-12-02 12:43:56,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:56,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:43:56,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:43:56,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:43:56,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:43:56,120 INFO L87 Difference]: Start difference. First operand 213 states and 307 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 12:43:56,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:56,463 INFO L93 Difference]: Finished difference Result 348 states and 502 transitions. [2023-12-02 12:43:56,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:43:56,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2023-12-02 12:43:56,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:56,466 INFO L225 Difference]: With dead ends: 348 [2023-12-02 12:43:56,466 INFO L226 Difference]: Without dead ends: 138 [2023-12-02 12:43:56,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:43:56,468 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 26 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:56,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 233 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:43:56,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-12-02 12:43:56,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 128. [2023-12-02 12:43:56,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 111 states have (on average 1.3513513513513513) internal successors, (150), 113 states have internal predecessors, (150), 12 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (17), 14 states have call predecessors, (17), 11 states have call successors, (17) [2023-12-02 12:43:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 179 transitions. [2023-12-02 12:43:56,479 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 179 transitions. Word has length 39 [2023-12-02 12:43:56,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:56,479 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 179 transitions. [2023-12-02 12:43:56,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 12:43:56,479 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 179 transitions. [2023-12-02 12:43:56,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 12:43:56,481 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:56,481 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:56,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (10)] Ended with exit code 0 [2023-12-02 12:43:56,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:56,682 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:56,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:56,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1992155570, now seen corresponding path program 1 times [2023-12-02 12:43:56,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:43:56,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882963231] [2023-12-02 12:43:56,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:56,683 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 12:43:56,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:43:56,684 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:56,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (11)] Waiting until timeout for monitored process [2023-12-02 12:43:56,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:56,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-02 12:43:56,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:43:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 12:43:57,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:43:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:43:57,899 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:43:57,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882963231] [2023-12-02 12:43:57,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882963231] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 12:43:57,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:43:57,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-12-02 12:43:57,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938131608] [2023-12-02 12:43:57,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:57,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:43:57,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:43:57,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:43:57,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-02 12:43:57,902 INFO L87 Difference]: Start difference. First operand 128 states and 179 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:43:58,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:58,768 INFO L93 Difference]: Finished difference Result 202 states and 292 transitions. [2023-12-02 12:43:58,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:43:58,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2023-12-02 12:43:58,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:58,771 INFO L225 Difference]: With dead ends: 202 [2023-12-02 12:43:58,771 INFO L226 Difference]: Without dead ends: 166 [2023-12-02 12:43:58,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-02 12:43:58,772 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 37 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:58,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 312 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 12:43:58,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-02 12:43:58,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 154. [2023-12-02 12:43:58,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 133 states have (on average 1.3458646616541354) internal successors, (179), 136 states have internal predecessors, (179), 16 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (21), 18 states have call predecessors, (21), 15 states have call successors, (21) [2023-12-02 12:43:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 216 transitions. [2023-12-02 12:43:58,784 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 216 transitions. Word has length 40 [2023-12-02 12:43:58,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:58,785 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 216 transitions. [2023-12-02 12:43:58,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:43:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 216 transitions. [2023-12-02 12:43:58,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 12:43:58,786 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:58,786 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:58,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (11)] Forceful destruction successful, exit code 0 [2023-12-02 12:43:58,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:58,990 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:58,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:58,990 INFO L85 PathProgramCache]: Analyzing trace with hash -217148208, now seen corresponding path program 1 times [2023-12-02 12:43:58,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:43:58,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831575705] [2023-12-02 12:43:58,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:58,991 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 12:43:58,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:43:58,992 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:58,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (12)] Waiting until timeout for monitored process [2023-12-02 12:43:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:59,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:43:59,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:43:59,159 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:43:59,159 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:43:59,160 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:43:59,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831575705] [2023-12-02 12:43:59,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831575705] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:59,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:59,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:43:59,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242449248] [2023-12-02 12:43:59,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:59,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:43:59,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:43:59,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:43:59,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:43:59,162 INFO L87 Difference]: Start difference. First operand 154 states and 216 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:43:59,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:59,365 INFO L93 Difference]: Finished difference Result 161 states and 222 transitions. [2023-12-02 12:43:59,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:43:59,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2023-12-02 12:43:59,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:59,367 INFO L225 Difference]: With dead ends: 161 [2023-12-02 12:43:59,367 INFO L226 Difference]: Without dead ends: 154 [2023-12-02 12:43:59,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:43:59,369 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 5 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:59,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 362 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 12:43:59,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-12-02 12:43:59,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-12-02 12:43:59,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 133 states have (on average 1.3233082706766917) internal successors, (176), 136 states have internal predecessors, (176), 16 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (21), 18 states have call predecessors, (21), 15 states have call successors, (21) [2023-12-02 12:43:59,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 213 transitions. [2023-12-02 12:43:59,379 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 213 transitions. Word has length 40 [2023-12-02 12:43:59,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:59,379 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 213 transitions. [2023-12-02 12:43:59,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:43:59,379 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 213 transitions. [2023-12-02 12:43:59,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 12:43:59,381 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:59,381 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:59,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (12)] Forceful destruction successful, exit code 0 [2023-12-02 12:43:59,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:59,581 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:43:59,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:43:59,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1382908310, now seen corresponding path program 1 times [2023-12-02 12:43:59,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:43:59,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323989420] [2023-12-02 12:43:59,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:43:59,582 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 12:43:59,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:43:59,583 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:43:59,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (13)] Waiting until timeout for monitored process [2023-12-02 12:43:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:43:59,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:43:59,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:43:59,761 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:43:59,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:43:59,762 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:43:59,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323989420] [2023-12-02 12:43:59,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323989420] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:43:59,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:43:59,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:43:59,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916004707] [2023-12-02 12:43:59,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:43:59,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:43:59,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:43:59,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:43:59,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:43:59,764 INFO L87 Difference]: Start difference. First operand 154 states and 213 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:43:59,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:43:59,923 INFO L93 Difference]: Finished difference Result 262 states and 369 transitions. [2023-12-02 12:43:59,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:43:59,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2023-12-02 12:43:59,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:43:59,925 INFO L225 Difference]: With dead ends: 262 [2023-12-02 12:43:59,925 INFO L226 Difference]: Without dead ends: 210 [2023-12-02 12:43:59,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:43:59,926 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 74 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:43:59,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 293 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:43:59,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-12-02 12:43:59,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 171. [2023-12-02 12:43:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 147 states have (on average 1.3333333333333333) internal successors, (196), 149 states have internal predecessors, (196), 19 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (24), 21 states have call predecessors, (24), 18 states have call successors, (24) [2023-12-02 12:43:59,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 239 transitions. [2023-12-02 12:43:59,936 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 239 transitions. Word has length 41 [2023-12-02 12:43:59,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:43:59,936 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 239 transitions. [2023-12-02 12:43:59,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:43:59,936 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 239 transitions. [2023-12-02 12:43:59,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 12:43:59,937 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:43:59,937 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:43:59,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (13)] Ended with exit code 0 [2023-12-02 12:44:00,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:00,138 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:00,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:00,138 INFO L85 PathProgramCache]: Analyzing trace with hash -504265790, now seen corresponding path program 2 times [2023-12-02 12:44:00,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:44:00,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224106615] [2023-12-02 12:44:00,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 12:44:00,139 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 12:44:00,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:44:00,139 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:00,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (14)] Waiting until timeout for monitored process [2023-12-02 12:44:00,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-02 12:44:00,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 12:44:00,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 12:44:00,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:44:00,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 12:44:00,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:44:00,564 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:44:00,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224106615] [2023-12-02 12:44:00,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224106615] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:00,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:00,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 12:44:00,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042861294] [2023-12-02 12:44:00,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:00,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:44:00,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:44:00,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:44:00,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:44:00,566 INFO L87 Difference]: Start difference. First operand 171 states and 239 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:44:03,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:44:03,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:03,565 INFO L93 Difference]: Finished difference Result 187 states and 260 transitions. [2023-12-02 12:44:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:44:03,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2023-12-02 12:44:03,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:03,568 INFO L225 Difference]: With dead ends: 187 [2023-12-02 12:44:03,568 INFO L226 Difference]: Without dead ends: 185 [2023-12-02 12:44:03,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:44:03,570 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 16 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:03,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 436 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2023-12-02 12:44:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-12-02 12:44:03,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 175. [2023-12-02 12:44:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 150 states have (on average 1.3266666666666667) internal successors, (199), 152 states have internal predecessors, (199), 19 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (24), 21 states have call predecessors, (24), 18 states have call successors, (24) [2023-12-02 12:44:03,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 242 transitions. [2023-12-02 12:44:03,585 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 242 transitions. Word has length 41 [2023-12-02 12:44:03,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:03,585 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 242 transitions. [2023-12-02 12:44:03,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:44:03,586 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 242 transitions. [2023-12-02 12:44:03,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-12-02 12:44:03,587 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:03,587 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:03,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (14)] Forceful destruction successful, exit code 0 [2023-12-02 12:44:03,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:03,787 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:03,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:03,788 INFO L85 PathProgramCache]: Analyzing trace with hash -447007488, now seen corresponding path program 1 times [2023-12-02 12:44:03,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:44:03,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735388665] [2023-12-02 12:44:03,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:03,788 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 12:44:03,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:44:03,789 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:03,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (15)] Waiting until timeout for monitored process [2023-12-02 12:44:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:03,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:44:03,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:44:04,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 12:44:04,198 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:44:04,198 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:44:04,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735388665] [2023-12-02 12:44:04,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735388665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:04,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:04,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 12:44:04,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662955498] [2023-12-02 12:44:04,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:04,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:44:04,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:44:04,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:44:04,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:44:04,200 INFO L87 Difference]: Start difference. First operand 175 states and 242 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:44:06,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-12-02 12:44:06,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:06,833 INFO L93 Difference]: Finished difference Result 181 states and 247 transitions. [2023-12-02 12:44:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:44:06,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2023-12-02 12:44:06,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:06,836 INFO L225 Difference]: With dead ends: 181 [2023-12-02 12:44:06,836 INFO L226 Difference]: Without dead ends: 179 [2023-12-02 12:44:06,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 12:44:06,837 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 17 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:06,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 416 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-12-02 12:44:06,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-02 12:44:06,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-12-02 12:44:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 153 states have (on average 1.3202614379084967) internal successors, (202), 155 states have internal predecessors, (202), 19 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (24), 21 states have call predecessors, (24), 18 states have call successors, (24) [2023-12-02 12:44:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 245 transitions. [2023-12-02 12:44:06,850 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 245 transitions. Word has length 41 [2023-12-02 12:44:06,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:06,851 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 245 transitions. [2023-12-02 12:44:06,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:44:06,851 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 245 transitions. [2023-12-02 12:44:06,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 12:44:06,852 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:06,852 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:06,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (15)] Ended with exit code 0 [2023-12-02 12:44:07,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:07,053 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:07,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:07,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1272516475, now seen corresponding path program 1 times [2023-12-02 12:44:07,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:44:07,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589774466] [2023-12-02 12:44:07,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:07,053 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 12:44:07,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:44:07,054 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:07,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (16)] Waiting until timeout for monitored process [2023-12-02 12:44:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:07,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:44:07,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:44:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:44:07,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:44:07,191 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:44:07,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589774466] [2023-12-02 12:44:07,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589774466] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:07,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:07,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:44:07,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261520725] [2023-12-02 12:44:07,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:07,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:44:07,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:44:07,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:44:07,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:44:07,193 INFO L87 Difference]: Start difference. First operand 179 states and 245 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:44:07,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:07,360 INFO L93 Difference]: Finished difference Result 194 states and 261 transitions. [2023-12-02 12:44:07,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:44:07,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2023-12-02 12:44:07,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:07,362 INFO L225 Difference]: With dead ends: 194 [2023-12-02 12:44:07,362 INFO L226 Difference]: Without dead ends: 157 [2023-12-02 12:44:07,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:44:07,363 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 1 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:07,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 270 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:44:07,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-12-02 12:44:07,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-12-02 12:44:07,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 131 states have (on average 1.3358778625954197) internal successors, (175), 134 states have internal predecessors, (175), 19 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (22), 20 states have call predecessors, (22), 18 states have call successors, (22) [2023-12-02 12:44:07,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 216 transitions. [2023-12-02 12:44:07,377 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 216 transitions. Word has length 44 [2023-12-02 12:44:07,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:07,377 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 216 transitions. [2023-12-02 12:44:07,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:44:07,378 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 216 transitions. [2023-12-02 12:44:07,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 12:44:07,379 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:07,379 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:07,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (16)] Ended with exit code 0 [2023-12-02 12:44:07,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:07,579 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:07,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:07,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1639908257, now seen corresponding path program 1 times [2023-12-02 12:44:07,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:44:07,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543690248] [2023-12-02 12:44:07,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:07,580 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 12:44:07,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:44:07,581 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:07,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (17)] Waiting until timeout for monitored process [2023-12-02 12:44:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:07,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 12:44:07,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:44:07,804 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 12:44:07,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:44:07,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:44:07,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543690248] [2023-12-02 12:44:07,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543690248] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:07,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:07,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:44:07,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551069140] [2023-12-02 12:44:07,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:07,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:44:07,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:44:07,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:44:07,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:44:07,807 INFO L87 Difference]: Start difference. First operand 157 states and 216 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:44:08,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:08,262 INFO L93 Difference]: Finished difference Result 207 states and 285 transitions. [2023-12-02 12:44:08,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:44:08,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2023-12-02 12:44:08,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:08,264 INFO L225 Difference]: With dead ends: 207 [2023-12-02 12:44:08,264 INFO L226 Difference]: Without dead ends: 167 [2023-12-02 12:44:08,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:44:08,265 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 68 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:08,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 323 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 12:44:08,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-12-02 12:44:08,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2023-12-02 12:44:08,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 131 states have (on average 1.3206106870229009) internal successors, (173), 134 states have internal predecessors, (173), 19 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (22), 20 states have call predecessors, (22), 18 states have call successors, (22) [2023-12-02 12:44:08,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 214 transitions. [2023-12-02 12:44:08,275 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 214 transitions. Word has length 45 [2023-12-02 12:44:08,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:08,276 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 214 transitions. [2023-12-02 12:44:08,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:44:08,276 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 214 transitions. [2023-12-02 12:44:08,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 12:44:08,276 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:08,276 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:08,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (17)] Ended with exit code 0 [2023-12-02 12:44:08,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:08,477 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:08,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:08,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2032935267, now seen corresponding path program 1 times [2023-12-02 12:44:08,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:44:08,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528567576] [2023-12-02 12:44:08,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:08,478 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 12:44:08,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:44:08,479 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:08,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (18)] Waiting until timeout for monitored process [2023-12-02 12:44:08,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:08,525 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:44:08,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:44:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 12:44:08,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:44:08,618 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:44:08,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528567576] [2023-12-02 12:44:08,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528567576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:08,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:08,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:44:08,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340220140] [2023-12-02 12:44:08,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:08,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:44:08,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:44:08,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:44:08,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:44:08,620 INFO L87 Difference]: Start difference. First operand 157 states and 214 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:44:08,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:08,933 INFO L93 Difference]: Finished difference Result 206 states and 277 transitions. [2023-12-02 12:44:08,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:44:08,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2023-12-02 12:44:08,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:08,935 INFO L225 Difference]: With dead ends: 206 [2023-12-02 12:44:08,935 INFO L226 Difference]: Without dead ends: 180 [2023-12-02 12:44:08,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:44:08,936 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 60 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:08,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 230 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:44:08,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-02 12:44:08,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 157. [2023-12-02 12:44:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 131 states have (on average 1.3129770992366412) internal successors, (172), 134 states have internal predecessors, (172), 19 states have call successors, (19), 4 states have call predecessors, (19), 6 states have return successors, (22), 20 states have call predecessors, (22), 18 states have call successors, (22) [2023-12-02 12:44:08,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 213 transitions. [2023-12-02 12:44:08,948 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 213 transitions. Word has length 45 [2023-12-02 12:44:08,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:08,948 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 213 transitions. [2023-12-02 12:44:08,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:44:08,949 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 213 transitions. [2023-12-02 12:44:08,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 12:44:08,949 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:08,949 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:08,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (18)] Ended with exit code 0 [2023-12-02 12:44:09,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:09,150 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:09,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:09,151 INFO L85 PathProgramCache]: Analyzing trace with hash -2146016054, now seen corresponding path program 1 times [2023-12-02 12:44:09,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:44:09,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [798146982] [2023-12-02 12:44:09,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:09,151 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 12:44:09,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:44:09,152 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:09,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (19)] Waiting until timeout for monitored process [2023-12-02 12:44:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:09,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:44:09,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:44:09,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:44:09,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:44:09,494 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:44:09,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [798146982] [2023-12-02 12:44:09,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [798146982] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:09,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:09,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 12:44:09,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548670614] [2023-12-02 12:44:09,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:09,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 12:44:09,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:44:09,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 12:44:09,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:44:09,496 INFO L87 Difference]: Start difference. First operand 157 states and 213 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:44:10,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:10,559 INFO L93 Difference]: Finished difference Result 225 states and 311 transitions. [2023-12-02 12:44:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:44:10,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2023-12-02 12:44:10,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:10,562 INFO L225 Difference]: With dead ends: 225 [2023-12-02 12:44:10,562 INFO L226 Difference]: Without dead ends: 201 [2023-12-02 12:44:10,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:44:10,563 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 41 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:10,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 387 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 12:44:10,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-12-02 12:44:10,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 188. [2023-12-02 12:44:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 158 states have (on average 1.3101265822784811) internal successors, (207), 162 states have internal predecessors, (207), 23 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (26), 24 states have call predecessors, (26), 22 states have call successors, (26) [2023-12-02 12:44:10,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 256 transitions. [2023-12-02 12:44:10,588 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 256 transitions. Word has length 46 [2023-12-02 12:44:10,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:10,588 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 256 transitions. [2023-12-02 12:44:10,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:44:10,588 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 256 transitions. [2023-12-02 12:44:10,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-02 12:44:10,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:10,589 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:10,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (19)] Forceful destruction successful, exit code 0 [2023-12-02 12:44:10,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:10,790 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:10,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:10,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1015925832, now seen corresponding path program 1 times [2023-12-02 12:44:10,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:44:10,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660628082] [2023-12-02 12:44:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:10,791 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 12:44:10,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:44:10,792 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:10,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (20)] Waiting until timeout for monitored process [2023-12-02 12:44:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:44:10,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 12:44:10,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:44:10,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-02 12:44:10,969 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:44:10,969 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 12:44:10,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660628082] [2023-12-02 12:44:10,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660628082] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:44:10,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:44:10,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:44:10,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444312866] [2023-12-02 12:44:10,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:44:10,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:44:10,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 12:44:10,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:44:10,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:44:10,972 INFO L87 Difference]: Start difference. First operand 188 states and 256 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:44:11,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:44:11,144 INFO L93 Difference]: Finished difference Result 230 states and 305 transitions. [2023-12-02 12:44:11,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:44:11,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2023-12-02 12:44:11,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:44:11,146 INFO L225 Difference]: With dead ends: 230 [2023-12-02 12:44:11,146 INFO L226 Difference]: Without dead ends: 196 [2023-12-02 12:44:11,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:44:11,147 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 84 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:44:11,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 216 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:44:11,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-12-02 12:44:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 188. [2023-12-02 12:44:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 158 states have (on average 1.2341772151898733) internal successors, (195), 162 states have internal predecessors, (195), 23 states have call successors, (23), 4 states have call predecessors, (23), 6 states have return successors, (26), 24 states have call predecessors, (26), 22 states have call successors, (26) [2023-12-02 12:44:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 244 transitions. [2023-12-02 12:44:11,166 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 244 transitions. Word has length 46 [2023-12-02 12:44:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:44:11,166 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 244 transitions. [2023-12-02 12:44:11,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 12:44:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 244 transitions. [2023-12-02 12:44:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 12:44:11,168 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:44:11,168 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:11,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (20)] Ended with exit code 0 [2023-12-02 12:44:11,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:11,368 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:44:11,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:44:11,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1180898010, now seen corresponding path program 1 times [2023-12-02 12:44:11,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 12:44:11,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394614290] [2023-12-02 12:44:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:44:11,369 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 12:44:11,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 12:44:11,370 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:11,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (21)] Waiting until timeout for monitored process [2023-12-02 12:44:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:44:11,413 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 12:44:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:44:11,473 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-12-02 12:44:11,473 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 12:44:11,474 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-12-02 12:44:11,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-12-02 12:44:11,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 (21)] Forceful destruction successful, exit code 0 [2023-12-02 12:44:11,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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 12:44:11,683 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:44:11,686 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:44:11,705 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret11 could not be translated [2023-12-02 12:44:11,707 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated [2023-12-02 12:44:11,708 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret13 could not be translated [2023-12-02 12:44:11,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:44:11 BoogieIcfgContainer [2023-12-02 12:44:11,721 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:44:11,722 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:44:11,722 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:44:11,722 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:44:11,723 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:42:36" (3/4) ... [2023-12-02 12:44:11,723 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 12:44:11,729 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret11 could not be translated [2023-12-02 12:44:11,730 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated [2023-12-02 12:44:11,731 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret13 could not be translated [2023-12-02 12:44:11,780 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 12:44:11,780 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:44:11,781 INFO L158 Benchmark]: Toolchain (without parser) took 98008.27ms. Allocated memory is still 83.9MB. Free memory was 59.8MB in the beginning and 53.6MB in the end (delta: 6.3MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2023-12-02 12:44:11,781 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory is still 34.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:44:11,782 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.75ms. Allocated memory is still 83.9MB. Free memory was 59.6MB in the beginning and 44.0MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-12-02 12:44:11,782 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.78ms. Allocated memory is still 83.9MB. Free memory was 44.0MB in the beginning and 63.0MB in the end (delta: -19.0MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2023-12-02 12:44:11,783 INFO L158 Benchmark]: Boogie Preprocessor took 38.62ms. Allocated memory is still 83.9MB. Free memory was 63.0MB in the beginning and 60.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:44:11,783 INFO L158 Benchmark]: RCFGBuilder took 2648.56ms. Allocated memory is still 83.9MB. Free memory was 60.9MB in the beginning and 40.9MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 12:44:11,784 INFO L158 Benchmark]: TraceAbstraction took 94866.74ms. Allocated memory is still 83.9MB. Free memory was 40.3MB in the beginning and 57.0MB in the end (delta: -16.7MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2023-12-02 12:44:11,784 INFO L158 Benchmark]: Witness Printer took 58.64ms. Allocated memory is still 83.9MB. Free memory was 57.0MB in the beginning and 53.6MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:44:11,786 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 58.7MB. Free memory is still 34.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.75ms. Allocated memory is still 83.9MB. Free memory was 59.6MB in the beginning and 44.0MB in the end (delta: 15.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.78ms. Allocated memory is still 83.9MB. Free memory was 44.0MB in the beginning and 63.0MB in the end (delta: -19.0MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.62ms. Allocated memory is still 83.9MB. Free memory was 63.0MB in the beginning and 60.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2648.56ms. Allocated memory is still 83.9MB. Free memory was 60.9MB in the beginning and 40.9MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 94866.74ms. Allocated memory is still 83.9MB. Free memory was 40.3MB in the beginning and 57.0MB in the end (delta: -16.7MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. * Witness Printer took 58.64ms. Allocated memory is still 83.9MB. Free memory was 57.0MB in the beginning and 53.6MB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret13 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret13 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 60]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L402] COND FALSE !(__VERIFIER_nondet_int()) [L405] CALL main2() [L269] unsigned int a ; [L270] unsigned int ma = __VERIFIER_nondet_uint(); [L271] signed char ea = __VERIFIER_nondet_char(); [L272] unsigned int b ; [L273] unsigned int mb = __VERIFIER_nondet_uint(); [L274] signed char eb = __VERIFIER_nondet_char(); [L275] unsigned int r_add ; [L276] unsigned int zero ; [L277] int sa ; [L278] int sb ; [L279] int tmp ; [L280] int tmp___0 ; [L281] int tmp___1 ; [L282] int tmp___2 ; [L283] int tmp___3 ; [L284] int tmp___4 ; [L285] int tmp___5 ; [L286] int tmp___6 ; [L287] int tmp___7 ; [L288] int tmp___8 ; [L289] int tmp___9 ; [L290] int __retres23 ; [L294] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L72] COND TRUE ! m [L73] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L123] return (__retres4); [L294] RET, EXPR base2flt(0, 0) [L294] zero = base2flt(0, 0) [L295] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L72] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L100] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L102] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L119] m = m & ~ (1U << 24U) [L120] res = m | ((unsigned int )(e + 128) << 24U) [L121] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=2147483648, e=0, m=0, res=2147483648] [L123] return (__retres4); [L295] RET, EXPR base2flt(ma, ea) VAL [ea=0, ma=16777216, zero=0] [L295] a = base2flt(ma, ea) [L296] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=64, \old(m)=16777216] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L72] COND FALSE !(! m) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L100] COND TRUE 1 VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L102] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L119] m = m & ~ (1U << 24U) [L120] res = m | ((unsigned int )(e + 128) << 24U) [L121] __retres4 = res VAL [\old(e)=64, \old(m)=16777216, __retres4=3221225472, e=64, m=0, res=3221225472] [L123] return (__retres4); [L296] RET, EXPR base2flt(mb, eb) VAL [a=2147483648, ea=0, eb=64, ma=16777216, mb=16777216, zero=0] [L296] b = base2flt(mb, eb) [L298] COND FALSE !(a < zero) VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, zero=0] [L301] COND TRUE a > zero [L302] tmp = 1 VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, tmp=1, zero=0] [L306] sa = tmp VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, tmp=1, zero=0] [L308] COND FALSE !(b < zero) VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, tmp=1, zero=0] [L311] COND TRUE b > zero [L312] tmp___0 = 1 VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, tmp=1, tmp___0=1, zero=0] [L316] sb = tmp___0 VAL [a=2147483648, b=3221225472, ea=0, eb=64, ma=16777216, mb=16777216, sa=1, sb=1, tmp=1, tmp___0=1, zero=0] [L319] CALL addflt(a, b) [L127] unsigned int res ; [L128] unsigned int ma ; [L129] unsigned int mb ; [L130] unsigned int delta ; [L131] int ea ; [L132] int eb ; [L133] unsigned int tmp ; [L134] unsigned int __retres10 ; VAL [\old(a)=2147483648, \old(b)=3221225472, a=2147483648, b=3221225472] [L137] COND TRUE a < b [L138] tmp = a [L139] a = b [L140] b = tmp VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, tmp=2147483648] [L144] COND FALSE !(! b) [L151] ma = a & ((1U << 24U) - 1U) [L152] ea = (int )(a >> 24U) - 128 [L153] ma = ma | (1U << 24U) [L154] mb = b & ((1U << 24U) - 1U) [L155] eb = (int )(b >> 24U) - 128 [L156] mb = mb | (1U << 24U) VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L157] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L59] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L157] RET __VERIFIER_assert(ea >= eb) VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L158] delta = ea - eb VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, delta=64, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L159] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L59] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L60] reach_error() VAL [\old(cond)=0, cond=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: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 75 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 94.8s, OverallIterations: 18, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 20.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 861 SdHoareTripleChecker+Valid, 16.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 824 mSDsluCounter, 6199 SdHoareTripleChecker+Invalid, 15.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 210 IncrementalHoareTripleChecker+Unchecked, 4530 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1228 IncrementalHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 1669 mSDtfsCounter, 1228 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 814 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 12.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=213occurred in iteration=6, InterpolantAutomatonStates: 103, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 243 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 13.1s SatisfiabilityAnalysisTime, 56.3s InterpolantComputationTime, 727 NumberOfCodeBlocks, 711 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 784 ConstructedInterpolants, 4 QuantifiedInterpolants, 1450 SizeOfPredicates, 53 NumberOfNonLiveVariables, 1327 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 23 InterpolantComputations, 16 PerfectInterpolantSequences, 250/268 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 12:44:11,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_729e41bb-ee7b-46e0-ad7c-22d51db81fc7/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