./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje --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 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:15:59,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:15:59,286 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 01:15:59,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:15:59,298 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:15:59,346 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:15:59,347 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:15:59,348 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:15:59,349 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:15:59,350 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:15:59,351 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:15:59,351 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:15:59,352 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:15:59,352 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 01:15:59,355 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:15:59,355 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:15:59,356 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 01:15:59,356 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 01:15:59,357 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:15:59,357 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 01:15:59,357 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 01:15:59,362 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 01:15:59,363 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:15:59,363 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:15:59,363 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:15:59,364 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 01:15:59,364 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:15:59,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:15:59,365 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:15:59,365 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:15:59,368 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:15:59,369 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:15:59,369 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:15:59,370 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:15:59,370 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:15:59,371 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:15:59,372 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:15:59,372 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:15:59,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:15:59,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:15:59,373 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:15:59,374 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:15:59,374 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 01:15:59,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 01:15:59,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:15:59,375 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:15:59,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 01:15:59,376 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_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a [2024-11-09 01:15:59,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:15:59,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:15:59,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:15:59,736 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:15:59,737 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:15:59,738 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c Unable to find full path for "g++" [2024-11-09 01:16:01,904 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:16:02,177 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:16:02,178 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2024-11-09 01:16:02,198 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/data/9baf36fbd/e57c30a787f84450b3b0a7e19314164c/FLAG20f2f4cbc [2024-11-09 01:16:02,223 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/data/9baf36fbd/e57c30a787f84450b3b0a7e19314164c [2024-11-09 01:16:02,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:16:02,230 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:16:02,232 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:16:02,233 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:16:02,240 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:16:02,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:16:02" (1/1) ... [2024-11-09 01:16:02,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9de80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:02, skipping insertion in model container [2024-11-09 01:16:02,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:16:02" (1/1) ... [2024-11-09 01:16:02,290 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:16:02,590 WARN L250 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_c279487b-a8b3-468f-a875-3e0a436ebc4b/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2024-11-09 01:16:02,598 WARN L250 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_c279487b-a8b3-468f-a875-3e0a436ebc4b/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2024-11-09 01:16:02,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:16:02,681 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:16:02,709 WARN L250 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_c279487b-a8b3-468f-a875-3e0a436ebc4b/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2024-11-09 01:16:02,715 WARN L250 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_c279487b-a8b3-468f-a875-3e0a436ebc4b/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2024-11-09 01:16:02,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:16:02,791 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:16:02,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:02 WrapperNode [2024-11-09 01:16:02,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:16:02,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:16:02,793 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:16:02,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:16:02,801 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:02" (1/1) ... [2024-11-09 01:16:02,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:02" (1/1) ... [2024-11-09 01:16:02,839 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2024-11-09 01:16:02,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:16:02,840 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:16:02,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:16:02,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:16:02,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:02" (1/1) ... [2024-11-09 01:16:02,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:02" (1/1) ... [2024-11-09 01:16:02,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:02" (1/1) ... [2024-11-09 01:16:02,861 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:02" (1/1) ... [2024-11-09 01:16:02,870 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:02" (1/1) ... [2024-11-09 01:16:02,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:02" (1/1) ... [2024-11-09 01:16:02,881 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:02" (1/1) ... [2024-11-09 01:16:02,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:02" (1/1) ... [2024-11-09 01:16:02,890 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:16:02,895 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:16:02,895 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:16:02,895 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:16:02,897 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:02" (1/1) ... [2024-11-09 01:16:02,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:16:02,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:16:02,942 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:16:02,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:16:02,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:16:02,988 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-09 01:16:02,989 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-09 01:16:02,990 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-11-09 01:16:02,990 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-11-09 01:16:02,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 01:16:02,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:16:02,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:16:02,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 01:16:02,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 01:16:03,101 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:16:03,105 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:16:03,632 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-11-09 01:16:03,632 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:16:03,840 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:16:03,841 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 01:16:03,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:16:03 BoogieIcfgContainer [2024-11-09 01:16:03,842 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:16:03,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:16:03,845 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:16:03,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:16:03,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:16:02" (1/3) ... [2024-11-09 01:16:03,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79726532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:16:03, skipping insertion in model container [2024-11-09 01:16:03,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:02" (2/3) ... [2024-11-09 01:16:03,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79726532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:16:03, skipping insertion in model container [2024-11-09 01:16:03,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:16:03" (3/3) ... [2024-11-09 01:16:03,855 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_4-3a.c.cil.c [2024-11-09 01:16:03,881 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:16:03,881 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 01:16:03,950 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:16:03,958 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@599d4385, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:16:03,958 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 01:16:03,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 38 states have internal predecessors, (53), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 01:16:03,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 01:16:03,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:16:03,972 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 01:16:03,972 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:16:03,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:16:03,977 INFO L85 PathProgramCache]: Analyzing trace with hash 9245170, now seen corresponding path program 1 times [2024-11-09 01:16:03,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 01:16:03,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062927187] [2024-11-09 01:16:03,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:16:03,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 01:16:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 01:16:04,091 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 01:16:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 01:16:04,127 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 01:16:04,129 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 01:16:04,131 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-09 01:16:04,133 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-09 01:16:04,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 01:16:04,139 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-09 01:16:04,155 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 01:16:04,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 01:16:04 BoogieIcfgContainer [2024-11-09 01:16:04,160 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 01:16:04,161 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 01:16:04,161 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 01:16:04,161 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 01:16:04,162 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:16:03" (3/4) ... [2024-11-09 01:16:04,165 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-09 01:16:04,167 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 01:16:04,168 INFO L158 Benchmark]: Toolchain (without parser) took 1937.57ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 80.2MB in the beginning and 79.1MB in the end (delta: 1.0MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2024-11-09 01:16:04,169 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory was 85.8MB in the beginning and 85.7MB in the end (delta: 27.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 01:16:04,170 INFO L158 Benchmark]: CACSL2BoogieTranslator took 560.38ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 64.1MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-09 01:16:04,172 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.13ms. Allocated memory is still 117.4MB. Free memory was 64.1MB in the beginning and 62.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 01:16:04,173 INFO L158 Benchmark]: Boogie Preprocessor took 49.89ms. Allocated memory is still 117.4MB. Free memory was 62.2MB in the beginning and 60.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 01:16:04,175 INFO L158 Benchmark]: RCFGBuilder took 947.13ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 60.5MB in the beginning and 93.8MB in the end (delta: -33.3MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2024-11-09 01:16:04,176 INFO L158 Benchmark]: TraceAbstraction took 314.87ms. Allocated memory is still 153.1MB. Free memory was 93.8MB in the beginning and 79.9MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-09 01:16:04,176 INFO L158 Benchmark]: Witness Printer took 6.40ms. Allocated memory is still 153.1MB. Free memory was 79.9MB in the beginning and 79.1MB in the end (delta: 805.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 01:16:04,182 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory was 85.8MB in the beginning and 85.7MB in the end (delta: 27.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 560.38ms. Allocated memory is still 117.4MB. Free memory was 80.2MB in the beginning and 64.1MB in the end (delta: 16.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.13ms. Allocated memory is still 117.4MB. Free memory was 64.1MB in the beginning and 62.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.89ms. Allocated memory is still 117.4MB. Free memory was 62.2MB in the beginning and 60.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 947.13ms. Allocated memory was 117.4MB in the beginning and 153.1MB in the end (delta: 35.7MB). Free memory was 60.5MB in the beginning and 93.8MB in the end (delta: -33.3MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * TraceAbstraction took 314.87ms. Allocated memory is still 153.1MB. Free memory was 93.8MB in the beginning and 79.9MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 6.40ms. Allocated memory is still 153.1MB. Free memory was 79.9MB in the beginning and 79.1MB in the end (delta: 805.0kB). 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: [L309] COND TRUE __VERIFIER_nondet_int() [L310] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L47] COND TRUE !(result >= 0.0f && result < 1.5f) [L48] reach_error() - UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 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=51occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-09 01:16:04,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje --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 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 01:16:07,182 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 01:16:07,310 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 01:16:07,320 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 01:16:07,322 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 01:16:07,366 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 01:16:07,367 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 01:16:07,368 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 01:16:07,368 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 01:16:07,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 01:16:07,374 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 01:16:07,375 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 01:16:07,375 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 01:16:07,375 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 01:16:07,376 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 01:16:07,376 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 01:16:07,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 01:16:07,377 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 01:16:07,380 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 01:16:07,380 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 01:16:07,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 01:16:07,382 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 01:16:07,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 01:16:07,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 01:16:07,383 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 01:16:07,383 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 01:16:07,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 01:16:07,384 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 01:16:07,384 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 01:16:07,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 01:16:07,385 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 01:16:07,385 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 01:16:07,385 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 01:16:07,386 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 01:16:07,386 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 01:16:07,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:16:07,387 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 01:16:07,388 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 01:16:07,388 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 01:16:07,389 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 01:16:07,390 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 01:16:07,391 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 01:16:07,391 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 01:16:07,391 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a [2024-11-09 01:16:07,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 01:16:07,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 01:16:07,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 01:16:07,878 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 01:16:07,879 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 01:16:07,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c Unable to find full path for "g++" [2024-11-09 01:16:10,234 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 01:16:10,529 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 01:16:10,530 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2024-11-09 01:16:10,540 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/data/a2d4354af/f1890b2b9cf74b9f922f6a61487efcd5/FLAG2a3dd6812 [2024-11-09 01:16:10,553 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/data/a2d4354af/f1890b2b9cf74b9f922f6a61487efcd5 [2024-11-09 01:16:10,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 01:16:10,557 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 01:16:10,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 01:16:10,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 01:16:10,565 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 01:16:10,566 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:16:10" (1/1) ... [2024-11-09 01:16:10,567 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f982599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:10, skipping insertion in model container [2024-11-09 01:16:10,567 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 01:16:10" (1/1) ... [2024-11-09 01:16:10,603 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 01:16:10,831 WARN L250 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_c279487b-a8b3-468f-a875-3e0a436ebc4b/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2024-11-09 01:16:10,839 WARN L250 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_c279487b-a8b3-468f-a875-3e0a436ebc4b/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2024-11-09 01:16:10,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:16:11,021 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 01:16:11,048 WARN L250 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_c279487b-a8b3-468f-a875-3e0a436ebc4b/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2024-11-09 01:16:11,050 WARN L250 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_c279487b-a8b3-468f-a875-3e0a436ebc4b/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2024-11-09 01:16:11,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 01:16:11,132 INFO L204 MainTranslator]: Completed translation [2024-11-09 01:16:11,132 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:11 WrapperNode [2024-11-09 01:16:11,133 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 01:16:11,135 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 01:16:11,135 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 01:16:11,135 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 01:16:11,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:11" (1/1) ... [2024-11-09 01:16:11,165 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:11" (1/1) ... [2024-11-09 01:16:11,204 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-11-09 01:16:11,208 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 01:16:11,209 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 01:16:11,209 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 01:16:11,209 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 01:16:11,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:11" (1/1) ... [2024-11-09 01:16:11,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:11" (1/1) ... [2024-11-09 01:16:11,229 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:11" (1/1) ... [2024-11-09 01:16:11,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:11" (1/1) ... [2024-11-09 01:16:11,249 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:11" (1/1) ... [2024-11-09 01:16:11,256 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:11" (1/1) ... [2024-11-09 01:16:11,262 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:11" (1/1) ... [2024-11-09 01:16:11,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:11" (1/1) ... [2024-11-09 01:16:11,275 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 01:16:11,276 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 01:16:11,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 01:16:11,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 01:16:11,281 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:11" (1/1) ... [2024-11-09 01:16:11,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 01:16:11,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:16:11,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 01:16:11,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 01:16:11,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 01:16:11,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 01:16:11,366 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-09 01:16:11,366 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-09 01:16:11,367 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-11-09 01:16:11,368 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-11-09 01:16:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 01:16:11,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 01:16:11,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-09 01:16:11,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-09 01:16:11,493 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 01:16:11,496 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 01:16:14,233 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-09 01:16:14,233 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 01:16:14,249 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 01:16:14,249 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 01:16:14,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:16:14 BoogieIcfgContainer [2024-11-09 01:16:14,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 01:16:14,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 01:16:14,257 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 01:16:14,272 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 01:16:14,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 01:16:10" (1/3) ... [2024-11-09 01:16:14,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2138d8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:16:14, skipping insertion in model container [2024-11-09 01:16:14,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 01:16:11" (2/3) ... [2024-11-09 01:16:14,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2138d8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 01:16:14, skipping insertion in model container [2024-11-09 01:16:14,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:16:14" (3/3) ... [2024-11-09 01:16:14,276 INFO L112 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_4-3a.c.cil.c [2024-11-09 01:16:14,297 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 01:16:14,298 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-09 01:16:14,369 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 01:16:14,377 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4040c7be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 01:16:14,377 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-09 01:16:14,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-09 01:16:14,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 01:16:14,388 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:16:14,388 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:16:14,389 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:16:14,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:16:14,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1912677092, now seen corresponding path program 1 times [2024-11-09 01:16:14,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:16:14,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488929869] [2024-11-09 01:16:14,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:16:14,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:16:14,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:16:14,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:16:14,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-09 01:16:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:16:14,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-09 01:16:14,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:16:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:16:14,990 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:16:14,991 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:16:14,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488929869] [2024-11-09 01:16:14,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488929869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:16:14,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:16:14,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 01:16:14,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881662423] [2024-11-09 01:16:14,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:16:15,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 01:16:15,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:16:15,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 01:16:15,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 01:16:15,028 INFO L87 Difference]: Start difference. First operand has 63 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 50 states have internal predecessors, (71), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 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 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:16:15,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:16:15,062 INFO L93 Difference]: Finished difference Result 121 states and 179 transitions. [2024-11-09 01:16:15,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 01:16:15,067 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 01:16:15,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:16:15,078 INFO L225 Difference]: With dead ends: 121 [2024-11-09 01:16:15,078 INFO L226 Difference]: Without dead ends: 56 [2024-11-09 01:16:15,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 01:16:15,086 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:16:15,087 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 01:16:15,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-09 01:16:15,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-09 01:16:15,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 44 states have internal predecessors, (57), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 01:16:15,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 74 transitions. [2024-11-09 01:16:15,131 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 74 transitions. Word has length 7 [2024-11-09 01:16:15,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:16:15,131 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 74 transitions. [2024-11-09 01:16:15,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:16:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 74 transitions. [2024-11-09 01:16:15,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 01:16:15,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:16:15,133 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:16:15,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-09 01:16:15,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:16:15,334 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:16:15,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:16:15,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1912736674, now seen corresponding path program 1 times [2024-11-09 01:16:15,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:16:15,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130272970] [2024-11-09 01:16:15,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:16:15,337 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:16:15,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:16:15,340 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:16:15,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:17:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:17:14,403 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:17:14,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:17:29,631 WARN L851 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .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)) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (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)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) |c_ULTIMATE.start_main1_~result~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2024-11-09 01:18:03,178 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.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)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from false [2024-11-09 01:18:05,234 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.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)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 3.0 2.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from true [2024-11-09 01:18:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 01:18:05,235 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:18:05,235 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:18:05,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130272970] [2024-11-09 01:18:05,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130272970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:05,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:18:05,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 01:18:05,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269005487] [2024-11-09 01:18:05,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:05,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 01:18:05,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:18:05,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 01:18:05,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-11-09 01:18:05,241 INFO L87 Difference]: Start difference. First operand 56 states and 74 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:18:07,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 01:18:09,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 01:18:11,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-09 01:18:12,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:12,111 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2024-11-09 01:18:12,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 01:18:12,113 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-09 01:18:12,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:12,114 INFO L225 Difference]: With dead ends: 56 [2024-11-09 01:18:12,114 INFO L226 Difference]: Without dead ends: 51 [2024-11-09 01:18:12,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-11-09 01:18:12,116 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 68 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:12,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 171 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 3 Unknown, 148 Unchecked, 6.8s Time] [2024-11-09 01:18:12,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-09 01:18:12,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-09 01:18:12,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 38 states have (on average 1.368421052631579) internal successors, (52), 39 states have internal predecessors, (52), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-09 01:18:12,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2024-11-09 01:18:12,130 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 7 [2024-11-09 01:18:12,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:12,130 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2024-11-09 01:18:12,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 01:18:12,131 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2024-11-09 01:18:12,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-09 01:18:12,132 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:12,133 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:18:12,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-11-09 01:18:12,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:12,334 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:12,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:12,335 INFO L85 PathProgramCache]: Analyzing trace with hash -873152889, now seen corresponding path program 1 times [2024-11-09 01:18:12,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:18:12,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598389699] [2024-11-09 01:18:12,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:12,336 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:12,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:18:12,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:18:12,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:12,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:18:12,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 01:18:13,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:18:13,220 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:18:13,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598389699] [2024-11-09 01:18:13,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598389699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:13,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:18:13,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-09 01:18:13,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606387795] [2024-11-09 01:18:13,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:13,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 01:18:13,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:18:13,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 01:18:13,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-09 01:18:13,225 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 01:18:13,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:13,909 INFO L93 Difference]: Finished difference Result 97 states and 132 transitions. [2024-11-09 01:18:13,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 01:18:13,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2024-11-09 01:18:13,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:13,914 INFO L225 Difference]: With dead ends: 97 [2024-11-09 01:18:13,914 INFO L226 Difference]: Without dead ends: 69 [2024-11-09 01:18:13,915 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 01:18:13,916 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 13 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:13,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 433 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-09 01:18:13,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-09 01:18:13,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2024-11-09 01:18:13,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 48 states have internal predecessors, (60), 10 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-09 01:18:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2024-11-09 01:18:13,933 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 32 [2024-11-09 01:18:13,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:13,933 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2024-11-09 01:18:13,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 01:18:13,934 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2024-11-09 01:18:13,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-09 01:18:13,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:13,936 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-09 01:18:13,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:14,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:14,137 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:14,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:14,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1027059241, now seen corresponding path program 1 times [2024-11-09 01:18:14,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:18:14,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [587208528] [2024-11-09 01:18:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:14,139 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 [2024-11-09 01:18:14,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:18:14,143 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:18:14,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-09 01:18:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:14,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 01:18:14,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 01:18:15,144 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:18:15,676 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 01:18:15,677 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:18:15,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [587208528] [2024-11-09 01:18:15,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [587208528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:18:15,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [614408808] [2024-11-09 01:18:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:15,678 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 01:18:15,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 01:18:15,688 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 01:18:15,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-09 01:18:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:15,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 01:18:15,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:16,090 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 01:18:16,090 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:18:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 01:18:16,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [614408808] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:18:16,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101739159] [2024-11-09 01:18:16,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:16,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:18:16,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:18:16,556 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:18:16,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 01:18:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:16,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 01:18:16,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 01:18:16,912 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:18:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 01:18:17,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101739159] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:18:17,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 01:18:17,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 9 [2024-11-09 01:18:17,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019811203] [2024-11-09 01:18:17,408 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 01:18:17,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 01:18:17,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:18:17,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 01:18:17,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-09 01:18:17,410 INFO L87 Difference]: Start difference. First operand 62 states and 82 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 01:18:18,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:18,480 INFO L93 Difference]: Finished difference Result 116 states and 154 transitions. [2024-11-09 01:18:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 01:18:18,482 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 36 [2024-11-09 01:18:18,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:18,484 INFO L225 Difference]: With dead ends: 116 [2024-11-09 01:18:18,484 INFO L226 Difference]: Without dead ends: 88 [2024-11-09 01:18:18,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-09 01:18:18,486 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 15 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:18,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 493 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 01:18:18,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-09 01:18:18,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 72. [2024-11-09 01:18:18,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 55 states have internal predecessors, (68), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-09 01:18:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2024-11-09 01:18:18,503 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 36 [2024-11-09 01:18:18,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:18,504 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2024-11-09 01:18:18,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-09 01:18:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2024-11-09 01:18:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 01:18:18,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:18,507 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-09 01:18:18,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 01:18:18,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2024-11-09 01:18:18,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2024-11-09 01:18:19,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:19,112 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:19,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:19,113 INFO L85 PathProgramCache]: Analyzing trace with hash 56288294, now seen corresponding path program 1 times [2024-11-09 01:18:19,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:18:19,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823148298] [2024-11-09 01:18:19,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:19,115 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:19,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:18:19,119 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:18:19,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:19,205 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:18:19,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:20,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 01:18:20,097 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:18:20,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 01:18:20,568 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:18:20,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823148298] [2024-11-09 01:18:20,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823148298] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:18:20,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [561225005] [2024-11-09 01:18:20,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:20,569 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 01:18:20,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 01:18:20,571 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 01:18:20,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-09 01:18:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:20,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 01:18:20,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 01:18:21,735 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:18:21,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [561225005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:21,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 01:18:21,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8] total 12 [2024-11-09 01:18:21,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798629691] [2024-11-09 01:18:21,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:21,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 01:18:21,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:18:21,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 01:18:21,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-09 01:18:21,739 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 01:18:23,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:23,260 INFO L93 Difference]: Finished difference Result 109 states and 144 transitions. [2024-11-09 01:18:23,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 01:18:23,261 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 40 [2024-11-09 01:18:23,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:23,263 INFO L225 Difference]: With dead ends: 109 [2024-11-09 01:18:23,263 INFO L226 Difference]: Without dead ends: 86 [2024-11-09 01:18:23,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-09 01:18:23,265 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 13 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:23,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 517 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 01:18:23,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-09 01:18:23,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2024-11-09 01:18:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 59 states have (on average 1.271186440677966) internal successors, (75), 61 states have internal predecessors, (75), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2024-11-09 01:18:23,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2024-11-09 01:18:23,287 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 40 [2024-11-09 01:18:23,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:23,291 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2024-11-09 01:18:23,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-09 01:18:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2024-11-09 01:18:23,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 01:18:23,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:23,294 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-09 01:18:23,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-09 01:18:23,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:23,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:23,698 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:23,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:23,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1627612665, now seen corresponding path program 2 times [2024-11-09 01:18:23,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:18:23,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571257089] [2024-11-09 01:18:23,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 01:18:23,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:23,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:18:23,701 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:18:23,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:23,751 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-09 01:18:23,751 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 01:18:23,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 01:18:23,755 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:25,389 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 01:18:25,390 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:18:25,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:18:25,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571257089] [2024-11-09 01:18:25,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571257089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:25,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:18:25,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-09 01:18:25,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508222604] [2024-11-09 01:18:25,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:25,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-09 01:18:25,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:18:25,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-09 01:18:25,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-09 01:18:25,392 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 12 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 01:18:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:28,043 INFO L93 Difference]: Finished difference Result 155 states and 205 transitions. [2024-11-09 01:18:28,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 01:18:28,044 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-11-09 01:18:28,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:28,046 INFO L225 Difference]: With dead ends: 155 [2024-11-09 01:18:28,046 INFO L226 Difference]: Without dead ends: 123 [2024-11-09 01:18:28,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-09 01:18:28,052 INFO L432 NwaCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:28,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1011 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-09 01:18:28,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-09 01:18:28,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 113. [2024-11-09 01:18:28,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 83 states have (on average 1.2530120481927711) internal successors, (104), 86 states have internal predecessors, (104), 18 states have call successors, (18), 9 states have call predecessors, (18), 11 states have return successors, (25), 17 states have call predecessors, (25), 17 states have call successors, (25) [2024-11-09 01:18:28,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 147 transitions. [2024-11-09 01:18:28,094 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 147 transitions. Word has length 40 [2024-11-09 01:18:28,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:28,095 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 147 transitions. [2024-11-09 01:18:28,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 01:18:28,096 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 147 transitions. [2024-11-09 01:18:28,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-09 01:18:28,098 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:28,098 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-09 01:18:28,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:28,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:28,299 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:28,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:28,300 INFO L85 PathProgramCache]: Analyzing trace with hash -104180661, now seen corresponding path program 1 times [2024-11-09 01:18:28,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:18:28,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783487500] [2024-11-09 01:18:28,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:28,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:28,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:18:28,302 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:18:28,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:28,373 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 01:18:28,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 01:18:29,191 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:18:30,293 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-09 01:18:30,294 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:18:30,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783487500] [2024-11-09 01:18:30,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783487500] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 01:18:30,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:18:30,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2024-11-09 01:18:30,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814364002] [2024-11-09 01:18:30,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:30,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 01:18:30,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:18:30,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 01:18:30,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2024-11-09 01:18:30,297 INFO L87 Difference]: Start difference. First operand 113 states and 147 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 01:18:30,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:30,859 INFO L93 Difference]: Finished difference Result 119 states and 152 transitions. [2024-11-09 01:18:30,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 01:18:30,860 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-11-09 01:18:30,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:30,863 INFO L225 Difference]: With dead ends: 119 [2024-11-09 01:18:30,863 INFO L226 Difference]: Without dead ends: 117 [2024-11-09 01:18:30,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-09 01:18:30,865 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 3 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:30,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 313 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-09 01:18:30,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-09 01:18:30,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-09 01:18:30,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 86 states have (on average 1.244186046511628) internal successors, (107), 89 states have internal predecessors, (107), 18 states have call successors, (18), 10 states have call predecessors, (18), 12 states have return successors, (25), 17 states have call predecessors, (25), 17 states have call successors, (25) [2024-11-09 01:18:30,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2024-11-09 01:18:30,889 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 40 [2024-11-09 01:18:30,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:30,889 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2024-11-09 01:18:30,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-09 01:18:30,898 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2024-11-09 01:18:30,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 01:18:30,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:30,900 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2024-11-09 01:18:30,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:31,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:31,101 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:31,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:31,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1458145500, now seen corresponding path program 1 times [2024-11-09 01:18:31,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:18:31,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960597827] [2024-11-09 01:18:31,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:31,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:31,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:18:31,103 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:18:31,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:31,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:18:31,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 01:18:31,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:18:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 01:18:32,843 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:18:32,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960597827] [2024-11-09 01:18:32,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960597827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:18:32,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1096045526] [2024-11-09 01:18:32,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:32,844 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 01:18:32,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 01:18:32,845 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 01:18:32,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-09 01:18:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:32,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:18:32,934 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:33,221 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 01:18:33,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:18:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 01:18:33,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1096045526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:18:33,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792540526] [2024-11-09 01:18:33,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:33,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:18:33,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:18:33,898 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:18:33,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 01:18:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:33,976 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:18:33,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 01:18:34,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:18:35,126 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 01:18:35,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792540526] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:18:35,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 01:18:35,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 9 [2024-11-09 01:18:35,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294439366] [2024-11-09 01:18:35,127 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 01:18:35,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-09 01:18:35,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:18:35,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-09 01:18:35,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 01:18:35,129 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 01:18:35,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:35,937 INFO L93 Difference]: Finished difference Result 151 states and 194 transitions. [2024-11-09 01:18:35,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 01:18:35,939 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2024-11-09 01:18:35,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:35,941 INFO L225 Difference]: With dead ends: 151 [2024-11-09 01:18:35,941 INFO L226 Difference]: Without dead ends: 140 [2024-11-09 01:18:35,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-09 01:18:35,942 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 17 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:35,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 481 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-09 01:18:35,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-09 01:18:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 131. [2024-11-09 01:18:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 95 states have (on average 1.231578947368421) internal successors, (117), 100 states have internal predecessors, (117), 21 states have call successors, (21), 10 states have call predecessors, (21), 14 states have return successors, (31), 20 states have call predecessors, (31), 20 states have call successors, (31) [2024-11-09 01:18:35,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 169 transitions. [2024-11-09 01:18:35,989 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 169 transitions. Word has length 45 [2024-11-09 01:18:35,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:35,989 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 169 transitions. [2024-11-09 01:18:35,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 01:18:35,990 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 169 transitions. [2024-11-09 01:18:35,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 01:18:35,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:35,993 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-09 01:18:36,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-09 01:18:36,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 01:18:36,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2024-11-09 01:18:36,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 01:18:36,595 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:36,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:36,595 INFO L85 PathProgramCache]: Analyzing trace with hash -757080922, now seen corresponding path program 1 times [2024-11-09 01:18:36,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:18:36,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866123911] [2024-11-09 01:18:36,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:36,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:36,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:18:36,599 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:18:36,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:36,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-09 01:18:36,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-09 01:18:38,021 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:18:38,021 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:18:38,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866123911] [2024-11-09 01:18:38,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866123911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:38,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:18:38,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-09 01:18:38,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513673739] [2024-11-09 01:18:38,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:38,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-09 01:18:38,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:18:38,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-09 01:18:38,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-09 01:18:38,025 INFO L87 Difference]: Start difference. First operand 131 states and 169 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 01:18:40,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:40,252 INFO L93 Difference]: Finished difference Result 180 states and 235 transitions. [2024-11-09 01:18:40,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 01:18:40,253 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2024-11-09 01:18:40,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:40,255 INFO L225 Difference]: With dead ends: 180 [2024-11-09 01:18:40,255 INFO L226 Difference]: Without dead ends: 173 [2024-11-09 01:18:40,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-09 01:18:40,257 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 22 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:40,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 697 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-09 01:18:40,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-09 01:18:40,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 133. [2024-11-09 01:18:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 97 states have (on average 1.2268041237113403) internal successors, (119), 101 states have internal predecessors, (119), 21 states have call successors, (21), 10 states have call predecessors, (21), 14 states have return successors, (31), 21 states have call predecessors, (31), 20 states have call successors, (31) [2024-11-09 01:18:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 171 transitions. [2024-11-09 01:18:40,281 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 171 transitions. Word has length 45 [2024-11-09 01:18:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:40,281 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 171 transitions. [2024-11-09 01:18:40,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 9 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 01:18:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 171 transitions. [2024-11-09 01:18:40,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 01:18:40,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:40,284 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-09 01:18:40,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:40,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:40,485 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:40,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:40,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1425276000, now seen corresponding path program 1 times [2024-11-09 01:18:40,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:18:40,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926677352] [2024-11-09 01:18:40,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:40,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:40,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:18:40,489 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:18:40,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:40,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:40,548 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 01:18:40,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:41,799 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 01:18:41,799 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:18:41,800 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:18:41,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926677352] [2024-11-09 01:18:41,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926677352] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:41,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:18:41,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-09 01:18:41,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989770264] [2024-11-09 01:18:41,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:41,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-09 01:18:41,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:18:41,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-09 01:18:41,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-09 01:18:41,802 INFO L87 Difference]: Start difference. First operand 133 states and 171 transitions. Second operand has 10 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 01:18:42,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:42,883 INFO L93 Difference]: Finished difference Result 242 states and 326 transitions. [2024-11-09 01:18:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 01:18:42,885 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 46 [2024-11-09 01:18:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:42,887 INFO L225 Difference]: With dead ends: 242 [2024-11-09 01:18:42,887 INFO L226 Difference]: Without dead ends: 189 [2024-11-09 01:18:42,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-09 01:18:42,889 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 30 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:42,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 773 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 01:18:42,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-09 01:18:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 169. [2024-11-09 01:18:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 122 states have (on average 1.2295081967213115) internal successors, (150), 126 states have internal predecessors, (150), 30 states have call successors, (30), 12 states have call predecessors, (30), 16 states have return successors, (42), 30 states have call predecessors, (42), 29 states have call successors, (42) [2024-11-09 01:18:42,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 222 transitions. [2024-11-09 01:18:42,931 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 222 transitions. Word has length 46 [2024-11-09 01:18:42,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:42,931 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 222 transitions. [2024-11-09 01:18:42,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 01:18:42,932 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 222 transitions. [2024-11-09 01:18:42,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 01:18:42,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:42,934 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-09 01:18:42,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:43,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:43,134 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:43,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:43,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1167110562, now seen corresponding path program 1 times [2024-11-09 01:18:43,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:18:43,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113167105] [2024-11-09 01:18:43,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:43,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:43,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:18:43,137 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:18:43,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:43,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-09 01:18:43,198 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:45,629 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-09 01:18:45,630 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 01:18:45,630 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:18:45,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113167105] [2024-11-09 01:18:45,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113167105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 01:18:45,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 01:18:45,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-09 01:18:45,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97995336] [2024-11-09 01:18:45,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:45,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 01:18:45,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:18:45,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 01:18:45,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-09 01:18:45,632 INFO L87 Difference]: Start difference. First operand 169 states and 222 transitions. Second operand has 14 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 01:18:48,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:48,441 INFO L93 Difference]: Finished difference Result 203 states and 264 transitions. [2024-11-09 01:18:48,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 01:18:48,442 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 46 [2024-11-09 01:18:48,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:48,444 INFO L225 Difference]: With dead ends: 203 [2024-11-09 01:18:48,444 INFO L226 Difference]: Without dead ends: 201 [2024-11-09 01:18:48,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2024-11-09 01:18:48,446 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 39 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:48,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1153 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-09 01:18:48,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-09 01:18:48,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 181. [2024-11-09 01:18:48,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 131 states have (on average 1.213740458015267) internal successors, (159), 135 states have internal predecessors, (159), 30 states have call successors, (30), 15 states have call predecessors, (30), 19 states have return successors, (42), 30 states have call predecessors, (42), 29 states have call successors, (42) [2024-11-09 01:18:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 231 transitions. [2024-11-09 01:18:48,483 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 231 transitions. Word has length 46 [2024-11-09 01:18:48,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:48,484 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 231 transitions. [2024-11-09 01:18:48,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 5 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-09 01:18:48,485 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 231 transitions. [2024-11-09 01:18:48,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 01:18:48,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:48,487 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1] [2024-11-09 01:18:48,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:48,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:48,688 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:48,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:48,688 INFO L85 PathProgramCache]: Analyzing trace with hash 315610385, now seen corresponding path program 1 times [2024-11-09 01:18:48,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:18:48,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934009946] [2024-11-09 01:18:48,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:48,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:48,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:18:48,690 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:18:48,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:48,756 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-09 01:18:48,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:50,404 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-09 01:18:50,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:18:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 01:18:51,790 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:18:51,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934009946] [2024-11-09 01:18:51,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934009946] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 01:18:51,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 01:18:51,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 16 [2024-11-09 01:18:51,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461951966] [2024-11-09 01:18:51,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:51,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 01:18:51,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:18:51,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 01:18:51,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-09 01:18:51,792 INFO L87 Difference]: Start difference. First operand 181 states and 231 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 01:18:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:52,694 INFO L93 Difference]: Finished difference Result 236 states and 304 transitions. [2024-11-09 01:18:52,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 01:18:52,695 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2024-11-09 01:18:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:52,697 INFO L225 Difference]: With dead ends: 236 [2024-11-09 01:18:52,697 INFO L226 Difference]: Without dead ends: 208 [2024-11-09 01:18:52,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-09 01:18:52,699 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 21 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:52,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 559 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 01:18:52,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-09 01:18:52,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 203. [2024-11-09 01:18:52,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 146 states have (on average 1.2191780821917808) internal successors, (178), 151 states have internal predecessors, (178), 35 states have call successors, (35), 16 states have call predecessors, (35), 21 states have return successors, (48), 35 states have call predecessors, (48), 34 states have call successors, (48) [2024-11-09 01:18:52,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 261 transitions. [2024-11-09 01:18:52,742 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 261 transitions. Word has length 50 [2024-11-09 01:18:52,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:52,743 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 261 transitions. [2024-11-09 01:18:52,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 6 states have internal predecessors, (33), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 01:18:52,744 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 261 transitions. [2024-11-09 01:18:52,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 01:18:52,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:52,746 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1] [2024-11-09 01:18:52,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:52,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:52,950 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:52,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:52,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1280854101, now seen corresponding path program 1 times [2024-11-09 01:18:52,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:18:52,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [569579256] [2024-11-09 01:18:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:52,951 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:52,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:18:52,952 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:18:52,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:53,015 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:18:53,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:53,725 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 01:18:53,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:18:54,233 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 01:18:54,234 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:18:54,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [569579256] [2024-11-09 01:18:54,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [569579256] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:18:54,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1701990335] [2024-11-09 01:18:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:54,235 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 01:18:54,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 01:18:54,238 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 01:18:54,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-09 01:18:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:54,337 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 01:18:54,339 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:18:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 01:18:55,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:18:57,541 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 01:18:57,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1701990335] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 01:18:57,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 01:18:57,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 8, 7] total 18 [2024-11-09 01:18:57,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214310605] [2024-11-09 01:18:57,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 01:18:57,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 01:18:57,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:18:57,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 01:18:57,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-09 01:18:57,544 INFO L87 Difference]: Start difference. First operand 203 states and 261 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 01:18:58,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:18:58,840 INFO L93 Difference]: Finished difference Result 306 states and 402 transitions. [2024-11-09 01:18:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 01:18:58,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2024-11-09 01:18:58,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:18:58,843 INFO L225 Difference]: With dead ends: 306 [2024-11-09 01:18:58,844 INFO L226 Difference]: Without dead ends: 278 [2024-11-09 01:18:58,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-09 01:18:58,845 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 31 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 01:18:58,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 496 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 01:18:58,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-09 01:18:58,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 270. [2024-11-09 01:18:58,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 192 states have (on average 1.2395833333333333) internal successors, (238), 201 states have internal predecessors, (238), 50 states have call successors, (50), 18 states have call predecessors, (50), 27 states have return successors, (68), 50 states have call predecessors, (68), 49 states have call successors, (68) [2024-11-09 01:18:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 356 transitions. [2024-11-09 01:18:58,887 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 356 transitions. Word has length 50 [2024-11-09 01:18:58,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:18:58,887 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 356 transitions. [2024-11-09 01:18:58,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-09 01:18:58,888 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 356 transitions. [2024-11-09 01:18:58,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-09 01:18:58,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:18:58,890 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-11-09 01:18:58,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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)] Ended with exit code 0 [2024-11-09 01:18:59,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2024-11-09 01:18:59,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 01:18:59,291 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:18:59,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:18:59,291 INFO L85 PathProgramCache]: Analyzing trace with hash 463205651, now seen corresponding path program 1 times [2024-11-09 01:18:59,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:18:59,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473234199] [2024-11-09 01:18:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:18:59,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:18:59,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:18:59,293 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:18:59,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:18:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:18:59,378 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:18:59,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:19:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 01:19:00,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:19:00,621 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-09 01:19:00,621 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:19:00,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473234199] [2024-11-09 01:19:00,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473234199] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:19:00,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [45307001] [2024-11-09 01:19:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:19:00,622 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 01:19:00,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 01:19:00,623 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 01:19:00,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-09 01:19:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:19:00,715 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 01:19:00,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:19:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 01:19:01,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:19:02,371 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 01:19:02,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [45307001] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:19:02,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350983351] [2024-11-09 01:19:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:19:02,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:19:02,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:19:02,373 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:19:02,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 01:19:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:19:02,447 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 01:19:02,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:19:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 01:19:02,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:19:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-09 01:19:03,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350983351] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:19:03,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 01:19:03,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 13 [2024-11-09 01:19:03,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039434440] [2024-11-09 01:19:03,281 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 01:19:03,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-09 01:19:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:19:03,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-09 01:19:03,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-09 01:19:03,283 INFO L87 Difference]: Start difference. First operand 270 states and 356 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 01:19:05,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:19:05,371 INFO L93 Difference]: Finished difference Result 384 states and 504 transitions. [2024-11-09 01:19:05,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-09 01:19:05,372 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 50 [2024-11-09 01:19:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:19:05,375 INFO L225 Difference]: With dead ends: 384 [2024-11-09 01:19:05,375 INFO L226 Difference]: Without dead ends: 316 [2024-11-09 01:19:05,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-09 01:19:05,377 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 37 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-09 01:19:05,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 603 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-09 01:19:05,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2024-11-09 01:19:05,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 273. [2024-11-09 01:19:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 198 states have (on average 1.2171717171717171) internal successors, (241), 204 states have internal predecessors, (241), 46 states have call successors, (46), 22 states have call predecessors, (46), 28 states have return successors, (64), 46 states have call predecessors, (64), 45 states have call successors, (64) [2024-11-09 01:19:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 351 transitions. [2024-11-09 01:19:05,423 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 351 transitions. Word has length 50 [2024-11-09 01:19:05,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:19:05,424 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 351 transitions. [2024-11-09 01:19:05,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-09 01:19:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 351 transitions. [2024-11-09 01:19:05,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 01:19:05,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:19:05,427 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-09 01:19:05,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 [2024-11-09 01:19:05,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2024-11-09 01:19:05,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-09 01:19:06,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:19:06,028 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:19:06,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:19:06,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1280178916, now seen corresponding path program 1 times [2024-11-09 01:19:06,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:19:06,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [358425384] [2024-11-09 01:19:06,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:19:06,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:19:06,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:19:06,030 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:19:06,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 (24)] Waiting until timeout for monitored process [2024-11-09 01:19:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:19:06,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 01:19:06,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:19:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 01:19:06,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:19:12,254 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 01:19:12,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [358425384] [2024-11-09 01:19:12,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [358425384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 01:19:12,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2090650008] [2024-11-09 01:19:12,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:19:12,255 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 01:19:12,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 01:19:12,256 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 01:19:12,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-09 01:19:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:19:12,346 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:19:12,347 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:19:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 01:19:12,531 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:19:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 01:19:13,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2090650008] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:19:13,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428861154] [2024-11-09 01:19:13,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:19:13,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:19:13,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 01:19:13,087 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 01:19:13,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 01:19:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 01:19:13,158 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 01:19:13,160 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 01:19:13,407 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-09 01:19:13,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 01:19:13,847 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-09 01:19:13,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428861154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 01:19:13,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2024-11-09 01:19:13,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8] total 8 [2024-11-09 01:19:13,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686083455] [2024-11-09 01:19:13,848 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2024-11-09 01:19:13,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-09 01:19:13,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 01:19:13,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-09 01:19:13,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2024-11-09 01:19:13,850 INFO L87 Difference]: Start difference. First operand 273 states and 351 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 01:19:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 01:19:14,755 INFO L93 Difference]: Finished difference Result 368 states and 477 transitions. [2024-11-09 01:19:14,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 01:19:14,756 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 46 [2024-11-09 01:19:14,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 01:19:14,759 INFO L225 Difference]: With dead ends: 368 [2024-11-09 01:19:14,759 INFO L226 Difference]: Without dead ends: 320 [2024-11-09 01:19:14,760 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-11-09 01:19:14,761 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 34 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-09 01:19:14,761 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 593 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-09 01:19:14,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-09 01:19:14,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 293. [2024-11-09 01:19:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 212 states have (on average 1.221698113207547) internal successors, (259), 219 states have internal predecessors, (259), 50 states have call successors, (50), 23 states have call predecessors, (50), 30 states have return successors, (69), 50 states have call predecessors, (69), 49 states have call successors, (69) [2024-11-09 01:19:14,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 378 transitions. [2024-11-09 01:19:14,799 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 378 transitions. Word has length 46 [2024-11-09 01:19:14,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 01:19:14,800 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 378 transitions. [2024-11-09 01:19:14,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.875) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-09 01:19:14,800 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 378 transitions. [2024-11-09 01:19:14,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-09 01:19:14,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 01:19:14,802 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-09 01:19:14,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 (24)] Ended with exit code 0 [2024-11-09 01:19:15,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2024-11-09 01:19:15,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-09 01:19:15,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 01:19:15,403 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 01:19:15,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 01:19:15,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1538344354, now seen corresponding path program 1 times [2024-11-09 01:19:15,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 01:19:15,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959135537] [2024-11-09 01:19:15,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 01:19:15,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:19:15,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 01:19:15,405 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-09 01:19:15,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 (27)] Waiting until timeout for monitored process [2024-11-09 01:19:15,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 01:19:15,459 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 01:19:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 01:19:15,524 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2024-11-09 01:19:15,524 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 01:19:15,525 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-09 01:19:15,528 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-09 01:19:15,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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 (27)] Ended with exit code 0 [2024-11-09 01:19:15,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-09 01:19:15,731 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 01:19:15,780 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-09 01:19:15,783 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 01:19:15 BoogieIcfgContainer [2024-11-09 01:19:15,783 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-09 01:19:15,784 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-09 01:19:15,784 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-09 01:19:15,784 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-09 01:19:15,785 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 01:16:14" (3/4) ... [2024-11-09 01:19:15,786 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-09 01:19:15,854 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/witness.graphml [2024-11-09 01:19:15,854 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-09 01:19:15,855 INFO L158 Benchmark]: Toolchain (without parser) took 185297.90ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 44.6MB in the beginning and 60.4MB in the end (delta: -15.8MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2024-11-09 01:19:15,855 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 69.2MB. Free memory was 45.0MB in the beginning and 45.0MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 01:19:15,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 575.50ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 44.5MB in the beginning and 64.5MB in the end (delta: -20.0MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2024-11-09 01:19:15,856 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.24ms. Allocated memory is still 90.2MB. Free memory was 64.5MB in the beginning and 62.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 01:19:15,857 INFO L158 Benchmark]: Boogie Preprocessor took 66.33ms. Allocated memory is still 90.2MB. Free memory was 62.6MB in the beginning and 60.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 01:19:15,857 INFO L158 Benchmark]: RCFGBuilder took 2978.36ms. Allocated memory is still 90.2MB. Free memory was 60.8MB in the beginning and 43.6MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 01:19:15,857 INFO L158 Benchmark]: TraceAbstraction took 181526.86ms. Allocated memory is still 90.2MB. Free memory was 43.0MB in the beginning and 63.8MB in the end (delta: -20.8MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. [2024-11-09 01:19:15,858 INFO L158 Benchmark]: Witness Printer took 70.35ms. Allocated memory is still 90.2MB. Free memory was 63.8MB in the beginning and 60.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-09 01:19:15,860 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 69.2MB. Free memory was 45.0MB in the beginning and 45.0MB in the end (delta: 81.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 575.50ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 44.5MB in the beginning and 64.5MB in the end (delta: -20.0MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.24ms. Allocated memory is still 90.2MB. Free memory was 64.5MB in the beginning and 62.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 66.33ms. Allocated memory is still 90.2MB. Free memory was 62.6MB in the beginning and 60.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 2978.36ms. Allocated memory is still 90.2MB. Free memory was 60.8MB in the beginning and 43.6MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 181526.86ms. Allocated memory is still 90.2MB. Free memory was 43.0MB in the beginning and 63.8MB in the end (delta: -20.8MB). Peak memory consumption was 23.7MB. Max. memory is 16.1GB. * Witness Printer took 70.35ms. Allocated memory is still 90.2MB. Free memory was 63.8MB in the beginning and 60.4MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 60]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L309] COND FALSE !(__VERIFIER_nondet_int()) [L312] 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_add1 ; [L276] unsigned int r_add2 ; [L277] unsigned int zero ; [L278] int tmp ; [L279] int tmp___0 ; [L280] int __retres14 ; [L284] 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] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, e=0] [L284] RET, EXPR base2flt(0, 0) [L284] zero = base2flt(0, 0) [L285] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=-2147483648] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=-2147483648, e=127, m=-2147483648] [L72] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=-2147483648, e=127, m=-2147483648] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=-2147483648, e=127, m=-2147483648] [L100] COND TRUE 1 VAL [\old(e)=127, \old(m)=-2147483648, e=127, m=-2147483648] [L102] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=-2147483648, e=127, m=-2147483648] [L107] COND TRUE e >= 127 [L108] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=-2147483648, __retres4=-1, m=-2147483648] [L123] return (__retres4); VAL [\old(e)=127, \old(m)=-2147483648, \result=-1, m=-2147483648] [L285] RET, EXPR base2flt(ma, ea) VAL [ea=127, ma=-2147483648] [L285] a = base2flt(ma, ea) [L286] CALL, EXPR base2flt(mb, eb) 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] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-2147483648] [L286] RET, EXPR base2flt(mb, eb) VAL [a=-1, ea=127, eb=0, ma=-2147483648, mb=16777216] [L286] b = base2flt(mb, eb) [L287] CALL addflt(a, b) VAL [\old(a)=-1, \old(b)=-2147483648] [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)=-1, \old(b)=-2147483648, a=-1, b=-2147483648] [L137] COND FALSE !(a < b) VAL [\old(a)=-1, \old(b)=-2147483648, a=-1, b=-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)=-1, \old(b)=-2147483648, a=-1, ea=127, eb=0, ma=33554431, mb=16777216] [L157] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L59] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L157] RET __VERIFIER_assert(ea >= eb) VAL [\old(a)=-1, \old(b)=-2147483648, a=-1, ea=127, eb=0, ma=33554431, mb=16777216] [L158] delta = ea - eb VAL [\old(a)=-1, \old(b)=-2147483648, a=-1, delta=127, ea=127, ma=33554431, mb=16777216] [L159] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L59] COND TRUE !(cond) VAL [\old(cond)=0] [L60] reach_error() VAL [\old(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 4 procedures, 63 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 181.4s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 25.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 427 SdHoareTripleChecker+Valid, 20.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 381 mSDsluCounter, 8375 SdHoareTripleChecker+Invalid, 20.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 148 IncrementalHoareTripleChecker+Unchecked, 7176 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1325 IncrementalHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 1199 mSDtfsCounter, 1325 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1747 GetRequests, 1576 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 32.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=293occurred in iteration=15, InterpolantAutomatonStates: 141, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 15 MinimizatonAttempts, 211 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 60.1s SatisfiabilityAnalysisTime, 88.3s InterpolantComputationTime, 1070 NumberOfCodeBlocks, 1052 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1698 ConstructedInterpolants, 3 QuantifiedInterpolants, 3174 SizeOfPredicates, 41 NumberOfNonLiveVariables, 1982 ConjunctsInSsa, 234 ConjunctsInUnsatCore, 41 InterpolantComputations, 11 PerfectInterpolantSequences, 659/743 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! [2024-11-09 01:19:16,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c279487b-a8b3-468f-a875-3e0a436ebc4b/bin/utaipan-verify-YMUCfTKeje/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