./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.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_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 850d02aa9cb18294f9975f6e4e447a197934bcfd77c20fda5c55e9f9e3e0a979 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:33:19,109 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:33:19,210 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 04:33:19,219 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:33:19,220 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:33:19,261 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:33:19,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:33:19,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:33:19,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:33:19,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:33:19,265 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:33:19,266 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:33:19,266 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:33:19,269 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:33:19,269 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:33:19,270 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:33:19,270 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:33:19,271 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:33:19,271 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:33:19,271 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:33:19,276 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:33:19,277 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:33:19,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:33:19,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:33:19,278 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:33:19,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:33:19,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:33:19,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:33:19,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:33:19,282 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:33:19,283 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:33:19,283 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:33:19,284 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:33:19,284 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:33:19,284 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:33:19,285 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:33:19,285 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:33:19,285 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:33:19,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:33:19,286 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:33:19,286 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:33:19,287 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:33:19,287 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:33:19,287 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:33:19,288 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:33:19,288 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:33:19,288 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:33:19,289 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_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 850d02aa9cb18294f9975f6e4e447a197934bcfd77c20fda5c55e9f9e3e0a979 [2024-11-09 04:33:19,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:33:19,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:33:19,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:33:19,675 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:33:19,675 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:33:19,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c Unable to find full path for "g++" [2024-11-09 04:33:21,781 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:33:22,037 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:33:22,038 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2024-11-09 04:33:22,047 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/data/f4add37e5/eb23d2bf6172432d9e7790a2a9e917a5/FLAGd524e606a [2024-11-09 04:33:22,351 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/data/f4add37e5/eb23d2bf6172432d9e7790a2a9e917a5 [2024-11-09 04:33:22,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:33:22,355 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:33:22,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:33:22,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:33:22,365 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:33:22,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:33:22" (1/1) ... [2024-11-09 04:33:22,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a8043c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:33:22, skipping insertion in model container [2024-11-09 04:33:22,367 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:33:22" (1/1) ... [2024-11-09 04:33:22,412 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:33:22,711 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_9c095dea-3cd8-42ad-a29b-8e570509bcb7/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c[6787,6800] [2024-11-09 04:33:22,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:33:22,738 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:33:22,802 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_9c095dea-3cd8-42ad-a29b-8e570509bcb7/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c[6787,6800] [2024-11-09 04:33:22,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:33:22,830 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:33:22,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:33:22 WrapperNode [2024-11-09 04:33:22,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:33:22,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:33:22,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:33:22,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:33:22,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:33:22" (1/1) ... [2024-11-09 04:33:22,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:33:22" (1/1) ... [2024-11-09 04:33:22,899 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 246 [2024-11-09 04:33:22,899 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:33:22,902 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:33:22,902 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:33:22,902 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:33:22,917 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:33:22" (1/1) ... [2024-11-09 04:33:22,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:33:22" (1/1) ... [2024-11-09 04:33:22,919 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:33:22" (1/1) ... [2024-11-09 04:33:22,920 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:33:22" (1/1) ... [2024-11-09 04:33:22,926 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:33:22" (1/1) ... [2024-11-09 04:33:22,930 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:33:22" (1/1) ... [2024-11-09 04:33:22,932 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:33:22" (1/1) ... [2024-11-09 04:33:22,933 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:33:22" (1/1) ... [2024-11-09 04:33:22,941 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:33:22,942 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:33:22,942 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:33:22,942 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:33:22,943 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:33:22" (1/1) ... [2024-11-09 04:33:22,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:33:22,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:33:22,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:33:22,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:33:23,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:33:23,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:33:23,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:33:23,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:33:23,117 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:33:23,119 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:33:23,582 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-11-09 04:33:23,582 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:33:24,058 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:33:24,058 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 04:33:24,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:33:24 BoogieIcfgContainer [2024-11-09 04:33:24,059 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:33:24,063 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:33:24,063 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:33:24,067 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:33:24,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:33:22" (1/3) ... [2024-11-09 04:33:24,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd60a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:33:24, skipping insertion in model container [2024-11-09 04:33:24,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:33:22" (2/3) ... [2024-11-09 04:33:24,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd60a16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:33:24, skipping insertion in model container [2024-11-09 04:33:24,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:33:24" (3/3) ... [2024-11-09 04:33:24,073 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2024-11-09 04:33:24,093 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:33:24,094 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:33:24,170 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:33:24,182 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;@b4710f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:33:24,182 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:33:24,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 04:33:24,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 04:33:24,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:33:24,198 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 04:33:24,198 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:33:24,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:33:24,206 INFO L85 PathProgramCache]: Analyzing trace with hash 12962249, now seen corresponding path program 1 times [2024-11-09 04:33:24,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:33:24,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011609396] [2024-11-09 04:33:24,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:33:24,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:33:24,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:33:26,340 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 04:33:26,340 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:33:26,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011609396] [2024-11-09 04:33:26,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011609396] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:33:26,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:33:26,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:33:26,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63882078] [2024-11-09 04:33:26,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:33:26,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:33:26,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:33:26,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:33:26,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:33:26,381 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 04:33:26,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:33:26,442 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2024-11-09 04:33:26,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:33:26,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2024-11-09 04:33:26,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:33:26,453 INFO L225 Difference]: With dead ends: 14 [2024-11-09 04:33:26,453 INFO L226 Difference]: Without dead ends: 8 [2024-11-09 04:33:26,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:33:26,462 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:33:26,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:33:26,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-11-09 04:33:26,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-09 04:33:26,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 04:33:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2024-11-09 04:33:26,500 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2024-11-09 04:33:26,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:33:26,501 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2024-11-09 04:33:26,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 04:33:26,502 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2024-11-09 04:33:26,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-09 04:33:26,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:33:26,503 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-09 04:33:26,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:33:26,504 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:33:26,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:33:26,505 INFO L85 PathProgramCache]: Analyzing trace with hash -383539674, now seen corresponding path program 1 times [2024-11-09 04:33:26,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:33:26,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897778857] [2024-11-09 04:33:26,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:33:26,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:33:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:33:34,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:33:34,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:33:34,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897778857] [2024-11-09 04:33:34,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897778857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:33:34,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192410877] [2024-11-09 04:33:34,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:33:34,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:33:34,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:33:34,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:33:34,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:33:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:33:34,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 04:33:34,615 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:33:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:33:39,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:34:09,975 WARN L286 SmtUtils]: Spent 9.19s on a formula simplification. DAG size of input: 287 DAG size of output: 281 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-09 04:43:45,741 WARN L286 SmtUtils]: Spent 13.57s on a formula simplification. DAG size of input: 1642 DAG size of output: 1809 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 04:44:01,759 WARN L286 SmtUtils]: Spent 13.15s on a formula simplification. DAG size of input: 1448 DAG size of output: 1908 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 04:45:20,404 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-09 04:45:20,406 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2024-11-09 04:45:20,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [485082161] [2024-11-09 04:45:20,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2024-11-09 04:45:20,428 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2024-11-09 04:45:20,428 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:45:20,432 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:45:20,438 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:45:20,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:45:20,463 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:326) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:220) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 44 more [2024-11-09 04:45:20,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-09 04:45:20,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2024-11-09 04:45:20,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025133678] [2024-11-09 04:45:20,468 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-09 04:45:20,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:45:20,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:45:20,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:45:20,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:45:20,470 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 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 04:45:20,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-09 04:45:20,477 INFO L432 NwaCegarLoop]: 0 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, 0 SdHoareTripleChecker+Invalid, 1 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 04:45:20,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:45:20,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 04:45:20,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:45:20,682 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:177) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertCodeBlock(IncrementalHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:278) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:284) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.releaseLock(ChainingHoareTripleChecker.java:449) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:658) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.releaseLock(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:159) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:385) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:426) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:273) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:143) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Stream closed at java.base/java.lang.ProcessBuilder$NullOutputStream.write(ProcessBuilder.java:442) at java.base/java.io.OutputStream.write(OutputStream.java:157) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-09 04:45:20,685 INFO L158 Benchmark]: Toolchain (without parser) took 718329.54ms. Allocated memory was 123.7MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 90.8MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 468.0MB. Max. memory is 16.1GB. [2024-11-09 04:45:20,685 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 123.7MB. Free memory was 88.0MB in the beginning and 88.0MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-09 04:45:20,685 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.56ms. Allocated memory is still 123.7MB. Free memory was 90.6MB in the beginning and 74.8MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-09 04:45:20,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.66ms. Allocated memory is still 123.7MB. Free memory was 74.2MB in the beginning and 72.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:45:20,690 INFO L158 Benchmark]: Boogie Preprocessor took 39.26ms. Allocated memory is still 123.7MB. Free memory was 72.1MB in the beginning and 70.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-09 04:45:20,691 INFO L158 Benchmark]: RCFGBuilder took 1117.01ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 70.0MB in the beginning and 73.9MB in the end (delta: -3.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2024-11-09 04:45:20,692 INFO L158 Benchmark]: TraceAbstraction took 716621.25ms. Allocated memory was 159.4MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 72.8MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 411.5MB. Max. memory is 16.1GB. [2024-11-09 04:45:20,697 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 123.7MB. Free memory was 88.0MB in the beginning and 88.0MB in the end (delta: 26.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 474.56ms. Allocated memory is still 123.7MB. Free memory was 90.6MB in the beginning and 74.8MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.66ms. Allocated memory is still 123.7MB. Free memory was 74.2MB in the beginning and 72.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.26ms. Allocated memory is still 123.7MB. Free memory was 72.1MB in the beginning and 70.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1117.01ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 70.0MB in the beginning and 73.9MB in the end (delta: -3.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * TraceAbstraction took 716621.25ms. Allocated memory was 159.4MB in the beginning and 2.7GB in the end (delta: 2.5GB). Free memory was 72.8MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 411.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:337) RESULT: Ultimate could not prove your program: Toolchain returned no result. 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_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 850d02aa9cb18294f9975f6e4e447a197934bcfd77c20fda5c55e9f9e3e0a979 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:45:23,056 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:45:23,154 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-09 04:45:23,160 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:45:23,161 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:45:23,193 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:45:23,195 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:45:23,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:45:23,197 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:45:23,198 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:45:23,198 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:45:23,199 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:45:23,199 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:45:23,200 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:45:23,202 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:45:23,202 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:45:23,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:45:23,203 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 04:45:23,203 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:45:23,204 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:45:23,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:45:23,208 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 04:45:23,208 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:45:23,208 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 04:45:23,209 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:45:23,209 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-09 04:45:23,209 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:45:23,209 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-09 04:45:23,209 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:45:23,210 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 04:45:23,210 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:45:23,210 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:45:23,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 04:45:23,211 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:45:23,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:45:23,211 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:45:23,211 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:45:23,214 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:45:23,214 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 04:45:23,215 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-09 04:45:23,215 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-09 04:45:23,215 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:45:23,228 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:45:23,228 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_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 850d02aa9cb18294f9975f6e4e447a197934bcfd77c20fda5c55e9f9e3e0a979 [2024-11-09 04:45:23,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:45:23,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:45:23,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:45:23,609 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:45:23,609 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:45:23,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c Unable to find full path for "g++" [2024-11-09 04:45:25,599 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:45:25,842 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:45:25,842 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2024-11-09 04:45:25,854 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/data/847c59307/623ae8d9d9ef4f74aee07497d9eba2f3/FLAGd58f3968c [2024-11-09 04:45:25,877 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/data/847c59307/623ae8d9d9ef4f74aee07497d9eba2f3 [2024-11-09 04:45:25,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:45:25,882 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:45:25,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:45:25,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:45:25,892 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:45:25,893 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:45:25" (1/1) ... [2024-11-09 04:45:25,895 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7088b68a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:45:25, skipping insertion in model container [2024-11-09 04:45:25,895 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:45:25" (1/1) ... [2024-11-09 04:45:25,941 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:45:26,263 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_9c095dea-3cd8-42ad-a29b-8e570509bcb7/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c[6787,6800] [2024-11-09 04:45:26,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:45:26,286 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:45:26,334 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_9c095dea-3cd8-42ad-a29b-8e570509bcb7/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c[6787,6800] [2024-11-09 04:45:26,335 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:45:26,355 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:45:26,356 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:45:26 WrapperNode [2024-11-09 04:45:26,356 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:45:26,357 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:45:26,357 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:45:26,357 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:45:26,365 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:45:26" (1/1) ... [2024-11-09 04:45:26,375 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:45:26" (1/1) ... [2024-11-09 04:45:26,414 INFO L138 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 235 [2024-11-09 04:45:26,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:45:26,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:45:26,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:45:26,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:45:26,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:45:26" (1/1) ... [2024-11-09 04:45:26,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:45:26" (1/1) ... [2024-11-09 04:45:26,435 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:45:26" (1/1) ... [2024-11-09 04:45:26,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:45:26" (1/1) ... [2024-11-09 04:45:26,465 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:45:26" (1/1) ... [2024-11-09 04:45:26,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:45:26" (1/1) ... [2024-11-09 04:45:26,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:45:26" (1/1) ... [2024-11-09 04:45:26,485 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:45:26" (1/1) ... [2024-11-09 04:45:26,492 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:45:26,493 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:45:26,493 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:45:26,493 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:45:26,494 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:45:26" (1/1) ... [2024-11-09 04:45:26,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:45:26,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:45:26,551 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:45:26,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:45:26,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:45:26,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-09 04:45:26,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:45:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:45:26,677 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:45:26,679 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:45:27,199 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2024-11-09 04:45:27,199 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:45:27,220 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:45:27,220 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 04:45:27,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:45:27 BoogieIcfgContainer [2024-11-09 04:45:27,221 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:45:27,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:45:27,225 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:45:27,229 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:45:27,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:45:25" (1/3) ... [2024-11-09 04:45:27,230 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6f49af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:45:27, skipping insertion in model container [2024-11-09 04:45:27,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:45:26" (2/3) ... [2024-11-09 04:45:27,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6f49af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:45:27, skipping insertion in model container [2024-11-09 04:45:27,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:45:27" (3/3) ... [2024-11-09 04:45:27,233 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c [2024-11-09 04:45:27,254 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:45:27,254 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 04:45:27,331 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:45:27,339 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;@7c67adc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:45:27,340 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 04:45:27,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 66 states have (on average 1.696969696969697) internal successors, (112), 67 states have internal predecessors, (112), 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 04:45:27,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-09 04:45:27,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:27,355 INFO L215 NwaCegarLoop]: trace histogram [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 04:45:27,356 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:27,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:27,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1268602448, now seen corresponding path program 1 times [2024-11-09 04:45:27,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:27,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348625075] [2024-11-09 04:45:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:27,381 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 04:45:27,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:27,391 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:27,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:27,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:45:27,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:27,597 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 04:45:27,597 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:45:27,598 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:27,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348625075] [2024-11-09 04:45:27,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348625075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:45:27,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:45:27,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:45:27,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892050289] [2024-11-09 04:45:27,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:27,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:45:27,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:27,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:45:27,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:45:27,630 INFO L87 Difference]: Start difference. First operand has 68 states, 66 states have (on average 1.696969696969697) internal successors, (112), 67 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 04:45:27,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:27,704 INFO L93 Difference]: Finished difference Result 113 states and 185 transitions. [2024-11-09 04:45:27,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:45:27,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 25 [2024-11-09 04:45:27,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:27,716 INFO L225 Difference]: With dead ends: 113 [2024-11-09 04:45:27,716 INFO L226 Difference]: Without dead ends: 64 [2024-11-09 04:45:27,719 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:45:27,723 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 0 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:27,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 390 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:45:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-09 04:45:27,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-09 04:45:27,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 63 states have internal predecessors, (88), 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 04:45:27,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2024-11-09 04:45:27,781 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 25 [2024-11-09 04:45:27,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:27,781 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2024-11-09 04:45:27,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 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 04:45:27,782 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2024-11-09 04:45:27,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-09 04:45:27,784 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:27,785 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:45:27,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:27,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:27,987 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:27,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:27,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1320275738, now seen corresponding path program 1 times [2024-11-09 04:45:27,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:27,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515781608] [2024-11-09 04:45:27,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:27,989 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 04:45:27,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:27,993 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:27,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:28,133 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:45:28,138 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:28,683 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 04:45:28,684 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:45:28,684 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:28,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515781608] [2024-11-09 04:45:28,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515781608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:45:28,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:45:28,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:45:28,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283362204] [2024-11-09 04:45:28,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:28,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:45:28,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:28,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:45:28,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:45:28,693 INFO L87 Difference]: Start difference. First operand 64 states and 88 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 04:45:28,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:28,836 INFO L93 Difference]: Finished difference Result 228 states and 348 transitions. [2024-11-09 04:45:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:45:28,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2024-11-09 04:45:28,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:28,840 INFO L225 Difference]: With dead ends: 228 [2024-11-09 04:45:28,840 INFO L226 Difference]: Without dead ends: 187 [2024-11-09 04:45:28,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:45:28,842 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 271 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:28,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 289 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:45:28,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-09 04:45:28,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 103. [2024-11-09 04:45:28,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4705882352941178) internal successors, (150), 102 states have internal predecessors, (150), 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 04:45:28,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 150 transitions. [2024-11-09 04:45:28,856 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 150 transitions. Word has length 41 [2024-11-09 04:45:28,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:28,857 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 150 transitions. [2024-11-09 04:45:28,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 04:45:28,857 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 150 transitions. [2024-11-09 04:45:28,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-09 04:45:28,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:28,859 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:45:28,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:29,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:29,061 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:29,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:29,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1637801621, now seen corresponding path program 1 times [2024-11-09 04:45:29,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:29,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142486385] [2024-11-09 04:45:29,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:29,064 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 04:45:29,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:29,067 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:29,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:29,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:45:29,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:29,258 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 04:45:29,259 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:45:29,259 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:29,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142486385] [2024-11-09 04:45:29,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142486385] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:45:29,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:45:29,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 04:45:29,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038632389] [2024-11-09 04:45:29,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:29,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:45:29,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:29,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:45:29,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:45:29,266 INFO L87 Difference]: Start difference. First operand 103 states and 150 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 04:45:29,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:29,313 INFO L93 Difference]: Finished difference Result 111 states and 159 transitions. [2024-11-09 04:45:29,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:45:29,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 42 [2024-11-09 04:45:29,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:29,315 INFO L225 Difference]: With dead ends: 111 [2024-11-09 04:45:29,318 INFO L226 Difference]: Without dead ends: 109 [2024-11-09 04:45:29,318 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:45:29,320 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 0 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:29,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 332 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:45:29,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-09 04:45:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-09 04:45:29,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.4444444444444444) internal successors, (156), 108 states have internal predecessors, (156), 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 04:45:29,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 156 transitions. [2024-11-09 04:45:29,338 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 156 transitions. Word has length 42 [2024-11-09 04:45:29,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:29,340 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 156 transitions. [2024-11-09 04:45:29,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 04:45:29,341 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 156 transitions. [2024-11-09 04:45:29,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-09 04:45:29,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:29,344 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:45:29,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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)] Forceful destruction successful, exit code 0 [2024-11-09 04:45:29,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:29,547 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:29,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:29,552 INFO L85 PathProgramCache]: Analyzing trace with hash -715178850, now seen corresponding path program 1 times [2024-11-09 04:45:29,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:29,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562625754] [2024-11-09 04:45:29,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:29,557 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 04:45:29,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:29,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:29,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:29,651 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:45:29,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:29,740 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 04:45:29,741 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:45:29,741 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:29,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562625754] [2024-11-09 04:45:29,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562625754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:45:29,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:45:29,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:45:29,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128303615] [2024-11-09 04:45:29,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:29,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:45:29,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:29,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:45:29,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:45:29,744 INFO L87 Difference]: Start difference. First operand 109 states and 156 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 04:45:29,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:29,771 INFO L93 Difference]: Finished difference Result 266 states and 397 transitions. [2024-11-09 04:45:29,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:45:29,772 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 43 [2024-11-09 04:45:29,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:29,773 INFO L225 Difference]: With dead ends: 266 [2024-11-09 04:45:29,774 INFO L226 Difference]: Without dead ends: 180 [2024-11-09 04:45:29,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:45:29,775 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 37 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:29,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 145 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:45:29,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-09 04:45:29,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2024-11-09 04:45:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.4685714285714286) internal successors, (257), 175 states have internal predecessors, (257), 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 04:45:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 257 transitions. [2024-11-09 04:45:29,789 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 257 transitions. Word has length 43 [2024-11-09 04:45:29,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:29,790 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 257 transitions. [2024-11-09 04:45:29,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 04:45:29,790 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 257 transitions. [2024-11-09 04:45:29,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 04:45:29,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:29,792 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:45:29,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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)] Ended with exit code 0 [2024-11-09 04:45:29,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:29,992 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:29,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:29,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1729818578, now seen corresponding path program 1 times [2024-11-09 04:45:29,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:29,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921259201] [2024-11-09 04:45:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:29,994 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 04:45:29,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:29,998 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:29,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (6)] Waiting until timeout for monitored process [2024-11-09 04:45:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:30,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:45:30,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:30,168 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 04:45:30,169 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:45:30,169 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:30,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921259201] [2024-11-09 04:45:30,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921259201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:45:30,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:45:30,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:45:30,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420343525] [2024-11-09 04:45:30,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:30,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:45:30,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:30,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:45:30,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:45:30,173 INFO L87 Difference]: Start difference. First operand 176 states and 257 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 04:45:30,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:30,198 INFO L93 Difference]: Finished difference Result 450 states and 669 transitions. [2024-11-09 04:45:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:45:30,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2024-11-09 04:45:30,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:30,201 INFO L225 Difference]: With dead ends: 450 [2024-11-09 04:45:30,201 INFO L226 Difference]: Without dead ends: 297 [2024-11-09 04:45:30,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:45:30,203 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 45 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:30,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 171 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:45:30,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-09 04:45:30,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2024-11-09 04:45:30,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.4625850340136055) internal successors, (430), 294 states have internal predecessors, (430), 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 04:45:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 430 transitions. [2024-11-09 04:45:30,235 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 430 transitions. Word has length 44 [2024-11-09 04:45:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:30,236 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 430 transitions. [2024-11-09 04:45:30,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 04:45:30,237 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 430 transitions. [2024-11-09 04:45:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-09 04:45:30,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:30,238 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:45:30,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (6)] Forceful destruction successful, exit code 0 [2024-11-09 04:45:30,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:30,441 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:30,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:30,442 INFO L85 PathProgramCache]: Analyzing trace with hash 764459790, now seen corresponding path program 1 times [2024-11-09 04:45:30,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:30,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405536841] [2024-11-09 04:45:30,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:30,444 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 04:45:30,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:30,445 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:30,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (7)] Waiting until timeout for monitored process [2024-11-09 04:45:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:30,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:45:30,542 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:30,593 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 04:45:30,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:45:30,593 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:30,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405536841] [2024-11-09 04:45:30,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405536841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:45:30,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:45:30,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:45:30,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343182070] [2024-11-09 04:45:30,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:30,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:45:30,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:30,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:45:30,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:45:30,596 INFO L87 Difference]: Start difference. First operand 295 states and 430 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 04:45:30,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:30,624 INFO L93 Difference]: Finished difference Result 775 states and 1132 transitions. [2024-11-09 04:45:30,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:45:30,625 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 44 [2024-11-09 04:45:30,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:30,627 INFO L225 Difference]: With dead ends: 775 [2024-11-09 04:45:30,627 INFO L226 Difference]: Without dead ends: 503 [2024-11-09 04:45:30,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:45:30,629 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 49 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:30,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 184 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:45:30,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-09 04:45:30,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 501. [2024-11-09 04:45:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.432) internal successors, (716), 500 states have internal predecessors, (716), 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 04:45:30,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 716 transitions. [2024-11-09 04:45:30,654 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 716 transitions. Word has length 44 [2024-11-09 04:45:30,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:30,654 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 716 transitions. [2024-11-09 04:45:30,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 04:45:30,655 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 716 transitions. [2024-11-09 04:45:30,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-09 04:45:30,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:30,656 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:45:30,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (7)] Forceful destruction successful, exit code 0 [2024-11-09 04:45:30,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:30,861 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:30,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:30,861 INFO L85 PathProgramCache]: Analyzing trace with hash 290157917, now seen corresponding path program 1 times [2024-11-09 04:45:30,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:30,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072508155] [2024-11-09 04:45:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:30,862 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 04:45:30,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:30,865 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:30,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:30,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:45:30,947 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:30,991 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 04:45:30,992 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:45:30,992 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:30,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072508155] [2024-11-09 04:45:30,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072508155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:45:30,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:45:30,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:45:30,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919127237] [2024-11-09 04:45:30,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:30,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:45:30,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:30,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:45:30,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:45:30,995 INFO L87 Difference]: Start difference. First operand 501 states and 716 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 04:45:31,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:31,023 INFO L93 Difference]: Finished difference Result 980 states and 1418 transitions. [2024-11-09 04:45:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:45:31,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2024-11-09 04:45:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:31,046 INFO L225 Difference]: With dead ends: 980 [2024-11-09 04:45:31,046 INFO L226 Difference]: Without dead ends: 705 [2024-11-09 04:45:31,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:45:31,048 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 50 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:31,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 195 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:45:31,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2024-11-09 04:45:31,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 703. [2024-11-09 04:45:31,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 702 states have (on average 1.4216524216524216) internal successors, (998), 702 states have internal predecessors, (998), 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 04:45:31,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 998 transitions. [2024-11-09 04:45:31,074 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 998 transitions. Word has length 45 [2024-11-09 04:45:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:31,074 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 998 transitions. [2024-11-09 04:45:31,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 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 04:45:31,075 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 998 transitions. [2024-11-09 04:45:31,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-09 04:45:31,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:31,077 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:45:31,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:31,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:31,280 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:31,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:31,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2071813193, now seen corresponding path program 1 times [2024-11-09 04:45:31,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:31,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695806322] [2024-11-09 04:45:31,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:31,281 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 04:45:31,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:31,282 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:31,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (9)] Waiting until timeout for monitored process [2024-11-09 04:45:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:31,392 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:45:31,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:31,433 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:45:31,433 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:31,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695806322] [2024-11-09 04:45:31,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695806322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:45:31,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:45:31,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:45:31,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916181908] [2024-11-09 04:45:31,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:31,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:45:31,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:31,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:45:31,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:45:31,436 INFO L87 Difference]: Start difference. First operand 703 states and 998 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 04:45:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:31,465 INFO L93 Difference]: Finished difference Result 1201 states and 1716 transitions. [2024-11-09 04:45:31,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:45:31,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2024-11-09 04:45:31,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:31,468 INFO L225 Difference]: With dead ends: 1201 [2024-11-09 04:45:31,469 INFO L226 Difference]: Without dead ends: 523 [2024-11-09 04:45:31,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:45:31,470 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 44 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:31,471 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 184 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:45:31,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-11-09 04:45:31,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 521. [2024-11-09 04:45:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 1.4096153846153847) internal successors, (733), 520 states have internal predecessors, (733), 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 04:45:31,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 733 transitions. [2024-11-09 04:45:31,489 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 733 transitions. Word has length 63 [2024-11-09 04:45:31,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:31,489 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 733 transitions. [2024-11-09 04:45:31,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 04:45:31,490 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 733 transitions. [2024-11-09 04:45:31,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 04:45:31,491 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:31,491 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:45:31,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (9)] Ended with exit code 0 [2024-11-09 04:45:31,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:31,695 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:31,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:31,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1721740556, now seen corresponding path program 1 times [2024-11-09 04:45:31,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:31,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371732116] [2024-11-09 04:45:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:31,696 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 04:45:31,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:31,697 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:31,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:31,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:31,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:45:31,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:32,845 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:32,845 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:33,314 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371732116] [2024-11-09 04:45:33,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371732116] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:45:33,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1350121197] [2024-11-09 04:45:33,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:33,315 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:45:33,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:45:33,319 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:45:33,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-09 04:45:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:33,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:45:33,476 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:33,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:33,709 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:33,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1350121197] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 04:45:33,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:45:33,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 8, 4] total 19 [2024-11-09 04:45:33,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478271315] [2024-11-09 04:45:33,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:33,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:45:33,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:33,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:45:33,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:45:33,712 INFO L87 Difference]: Start difference. First operand 521 states and 733 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 04:45:33,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:33,735 INFO L93 Difference]: Finished difference Result 761 states and 1075 transitions. [2024-11-09 04:45:33,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:45:33,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2024-11-09 04:45:33,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:33,737 INFO L225 Difference]: With dead ends: 761 [2024-11-09 04:45:33,737 INFO L226 Difference]: Without dead ends: 287 [2024-11-09 04:45:33,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:45:33,739 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 36 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:33,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 165 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:45:33,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-09 04:45:33,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 285. [2024-11-09 04:45:33,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.369718309859155) internal successors, (389), 284 states have internal predecessors, (389), 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 04:45:33,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 389 transitions. [2024-11-09 04:45:33,749 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 389 transitions. Word has length 64 [2024-11-09 04:45:33,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:33,750 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 389 transitions. [2024-11-09 04:45:33,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 04:45:33,750 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 389 transitions. [2024-11-09 04:45:33,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 04:45:33,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:33,751 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:45:33,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-09 04:45:33,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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)] Forceful destruction successful, exit code 0 [2024-11-09 04:45:34,153 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:34,154 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:34,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:34,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1088203251, now seen corresponding path program 1 times [2024-11-09 04:45:34,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:34,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [30012789] [2024-11-09 04:45:34,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:34,155 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 04:45:34,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:34,157 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:34,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:34,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:45:34,260 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:34,893 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:34,894 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:35,304 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [30012789] [2024-11-09 04:45:35,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [30012789] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:45:35,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [241646000] [2024-11-09 04:45:35,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:35,305 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:45:35,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:45:35,308 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:45:35,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-09 04:45:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:35,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:45:35,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:35,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:35,666 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:35,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [241646000] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 04:45:35,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-09 04:45:35,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 8, 4] total 19 [2024-11-09 04:45:35,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289508973] [2024-11-09 04:45:35,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:35,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:45:35,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:35,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:45:35,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:45:35,669 INFO L87 Difference]: Start difference. First operand 285 states and 389 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 04:45:35,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:35,689 INFO L93 Difference]: Finished difference Result 407 states and 559 transitions. [2024-11-09 04:45:35,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:45:35,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2024-11-09 04:45:35,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:35,691 INFO L225 Difference]: With dead ends: 407 [2024-11-09 04:45:35,692 INFO L226 Difference]: Without dead ends: 169 [2024-11-09 04:45:35,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:45:35,693 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 30 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:35,694 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 146 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:45:35,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-09 04:45:35,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2024-11-09 04:45:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.319277108433735) internal successors, (219), 166 states have internal predecessors, (219), 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 04:45:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 219 transitions. [2024-11-09 04:45:35,702 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 219 transitions. Word has length 64 [2024-11-09 04:45:35,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:35,702 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 219 transitions. [2024-11-09 04:45:35,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 04:45:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 219 transitions. [2024-11-09 04:45:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-09 04:45:35,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:35,703 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:45:35,706 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-09 04:45:35,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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)] Forceful destruction successful, exit code 0 [2024-11-09 04:45:36,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:36,104 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:36,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:36,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1474451570, now seen corresponding path program 1 times [2024-11-09 04:45:36,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:36,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486521160] [2024-11-09 04:45:36,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:36,105 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 04:45:36,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:36,106 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:36,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (14)] Waiting until timeout for monitored process [2024-11-09 04:45:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:36,198 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:45:36,200 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:36,825 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:37,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:37,225 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:37,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486521160] [2024-11-09 04:45:37,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486521160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:45:37,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [539252664] [2024-11-09 04:45:37,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:37,226 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:45:37,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:45:37,229 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:45:37,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-09 04:45:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:37,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-09 04:45:37,399 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:37,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:45:37,536 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:45:37,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [539252664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:45:37,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231653836] [2024-11-09 04:45:37,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:37,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:45:37,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:45:37,684 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:45:37,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 04:45:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:37,787 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:45:37,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:37,897 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:45:37,897 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:38,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231653836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:45:38,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:45:38,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 4, 4, 4, 5] total 21 [2024-11-09 04:45:38,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456787618] [2024-11-09 04:45:38,129 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:45:38,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 04:45:38,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:38,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 04:45:38,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-09 04:45:38,132 INFO L87 Difference]: Start difference. First operand 167 states and 219 transitions. Second operand has 21 states, 21 states have (on average 12.428571428571429) internal successors, (261), 21 states have internal predecessors, (261), 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 04:45:40,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:40,813 INFO L93 Difference]: Finished difference Result 1063 states and 1417 transitions. [2024-11-09 04:45:40,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-09 04:45:40,813 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.428571428571429) internal successors, (261), 21 states have internal predecessors, (261), 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 64 [2024-11-09 04:45:40,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:40,817 INFO L225 Difference]: With dead ends: 1063 [2024-11-09 04:45:40,818 INFO L226 Difference]: Without dead ends: 943 [2024-11-09 04:45:40,820 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=744, Invalid=2562, Unknown=0, NotChecked=0, Total=3306 [2024-11-09 04:45:40,820 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 1350 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:40,823 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 851 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 04:45:40,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-11-09 04:45:40,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 806. [2024-11-09 04:45:40,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 805 states have (on average 1.3167701863354038) internal successors, (1060), 805 states have internal predecessors, (1060), 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 04:45:40,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1060 transitions. [2024-11-09 04:45:40,869 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1060 transitions. Word has length 64 [2024-11-09 04:45:40,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:40,871 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1060 transitions. [2024-11-09 04:45:40,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.428571428571429) internal successors, (261), 21 states have internal predecessors, (261), 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 04:45:40,871 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1060 transitions. [2024-11-09 04:45:40,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-09 04:45:40,872 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:40,873 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:45:40,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2024-11-09 04:45:41,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (14)] Forceful destruction successful, exit code 0 [2024-11-09 04:45:41,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-09 04:45:41,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:45:41,474 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:41,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:41,475 INFO L85 PathProgramCache]: Analyzing trace with hash -587889254, now seen corresponding path program 1 times [2024-11-09 04:45:41,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:41,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493676482] [2024-11-09 04:45:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:41,475 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 04:45:41,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:41,477 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:41,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:41,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:45:41,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:42,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:42,879 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:42,879 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:42,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493676482] [2024-11-09 04:45:42,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493676482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:45:42,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2130875363] [2024-11-09 04:45:42,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:42,880 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:45:42,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:45:42,883 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:45:42,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-09 04:45:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:43,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:45:43,054 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-09 04:45:43,359 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:45:43,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2130875363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:45:43,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:45:43,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 8] total 19 [2024-11-09 04:45:43,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280706784] [2024-11-09 04:45:43,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:43,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:45:43,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:43,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:45:43,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:45:43,361 INFO L87 Difference]: Start difference. First operand 806 states and 1060 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 04:45:43,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:43,474 INFO L93 Difference]: Finished difference Result 1886 states and 2514 transitions. [2024-11-09 04:45:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:45:43,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 65 [2024-11-09 04:45:43,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:43,479 INFO L225 Difference]: With dead ends: 1886 [2024-11-09 04:45:43,480 INFO L226 Difference]: Without dead ends: 1497 [2024-11-09 04:45:43,480 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:45:43,481 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 181 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:43,481 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 346 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:45:43,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2024-11-09 04:45:43,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1123. [2024-11-09 04:45:43,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 1122 states have (on average 1.3074866310160427) internal successors, (1467), 1122 states have internal predecessors, (1467), 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 04:45:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1467 transitions. [2024-11-09 04:45:43,528 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1467 transitions. Word has length 65 [2024-11-09 04:45:43,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:43,529 INFO L471 AbstractCegarLoop]: Abstraction has 1123 states and 1467 transitions. [2024-11-09 04:45:43,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 04:45:43,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1467 transitions. [2024-11-09 04:45:43,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 04:45:43,530 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:43,530 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:45:43,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2024-11-09 04:45:43,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:43,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:43,931 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:43,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:43,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1067050877, now seen corresponding path program 1 times [2024-11-09 04:45:43,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:43,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [959423620] [2024-11-09 04:45:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:43,932 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 04:45:43,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:43,935 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:43,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:44,025 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:45:44,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:44,070 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:44,070 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:45:44,070 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:44,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [959423620] [2024-11-09 04:45:44,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [959423620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:45:44,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:45:44,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:45:44,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270671010] [2024-11-09 04:45:44,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:44,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:45:44,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:44,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:45:44,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:45:44,072 INFO L87 Difference]: Start difference. First operand 1123 states and 1467 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 04:45:44,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:44,160 INFO L93 Difference]: Finished difference Result 2900 states and 3800 transitions. [2024-11-09 04:45:44,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:45:44,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2024-11-09 04:45:44,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:44,168 INFO L225 Difference]: With dead ends: 2900 [2024-11-09 04:45:44,168 INFO L226 Difference]: Without dead ends: 1878 [2024-11-09 04:45:44,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:45:44,170 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 41 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:44,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 166 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:45:44,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1878 states. [2024-11-09 04:45:44,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1878 to 1876. [2024-11-09 04:45:44,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1875 states have (on average 1.2901333333333334) internal successors, (2419), 1875 states have internal predecessors, (2419), 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 04:45:44,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 2419 transitions. [2024-11-09 04:45:44,293 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 2419 transitions. Word has length 66 [2024-11-09 04:45:44,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:44,293 INFO L471 AbstractCegarLoop]: Abstraction has 1876 states and 2419 transitions. [2024-11-09 04:45:44,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 04:45:44,294 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 2419 transitions. [2024-11-09 04:45:44,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 04:45:44,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:44,295 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:45:44,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:44,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:44,496 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:44,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:44,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1507776554, now seen corresponding path program 1 times [2024-11-09 04:45:44,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:44,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481822372] [2024-11-09 04:45:44,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:44,497 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 04:45:44,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:44,501 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:44,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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)] Waiting until timeout for monitored process [2024-11-09 04:45:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:44,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:45:44,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:45,285 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:45,528 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:45,528 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:45,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481822372] [2024-11-09 04:45:45,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481822372] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:45:45,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1444899947] [2024-11-09 04:45:45,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:45,529 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:45:45,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:45:45,532 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:45:45,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-09 04:45:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:45,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:45:45,668 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:45,728 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:45:45,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1444899947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:45:45,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:45:45,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 8] total 17 [2024-11-09 04:45:45,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618680090] [2024-11-09 04:45:45,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:45,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:45:45,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:45,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:45:45,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:45:45,730 INFO L87 Difference]: Start difference. First operand 1876 states and 2419 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 04:45:45,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:45,833 INFO L93 Difference]: Finished difference Result 4264 states and 5479 transitions. [2024-11-09 04:45:45,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:45:45,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2024-11-09 04:45:45,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:45,842 INFO L225 Difference]: With dead ends: 4264 [2024-11-09 04:45:45,842 INFO L226 Difference]: Without dead ends: 2647 [2024-11-09 04:45:45,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:45:45,845 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 36 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:45,845 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 198 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:45:45,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2024-11-09 04:45:45,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 2635. [2024-11-09 04:45:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2635 states, 2634 states have (on average 1.2570235383447228) internal successors, (3311), 2634 states have internal predecessors, (3311), 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 04:45:45,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2635 states to 2635 states and 3311 transitions. [2024-11-09 04:45:45,963 INFO L78 Accepts]: Start accepts. Automaton has 2635 states and 3311 transitions. Word has length 66 [2024-11-09 04:45:45,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:45,963 INFO L471 AbstractCegarLoop]: Abstraction has 2635 states and 3311 transitions. [2024-11-09 04:45:45,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 04:45:45,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2635 states and 3311 transitions. [2024-11-09 04:45:45,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 04:45:45,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:45,964 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:45:45,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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)] Ended with exit code 0 [2024-11-09 04:45:46,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2024-11-09 04:45:46,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:45:46,365 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:46,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:46,366 INFO L85 PathProgramCache]: Analyzing trace with hash 671845396, now seen corresponding path program 1 times [2024-11-09 04:45:46,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:46,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011047254] [2024-11-09 04:45:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:46,367 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 04:45:46,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:46,370 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:46,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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)] Waiting until timeout for monitored process [2024-11-09 04:45:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:46,458 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:45:46,460 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:47,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:47,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:47,425 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:47,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011047254] [2024-11-09 04:45:47,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011047254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:45:47,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1929763224] [2024-11-09 04:45:47,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:47,426 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:45:47,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:45:47,427 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:45:47,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-09 04:45:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:47,619 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:45:47,621 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:47,978 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-09 04:45:47,978 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:45:47,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1929763224] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:45:47,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:45:47,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 8] total 19 [2024-11-09 04:45:47,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205246619] [2024-11-09 04:45:47,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:47,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:45:47,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:47,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:45:47,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:45:47,980 INFO L87 Difference]: Start difference. First operand 2635 states and 3311 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 04:45:48,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:48,239 INFO L93 Difference]: Finished difference Result 5031 states and 6401 transitions. [2024-11-09 04:45:48,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:45:48,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 66 [2024-11-09 04:45:48,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:48,256 INFO L225 Difference]: With dead ends: 5031 [2024-11-09 04:45:48,256 INFO L226 Difference]: Without dead ends: 3959 [2024-11-09 04:45:48,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:45:48,259 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 174 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:48,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 354 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:45:48,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2024-11-09 04:45:48,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 3447. [2024-11-09 04:45:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 3446 states have (on average 1.2472431804991295) internal successors, (4298), 3446 states have internal predecessors, (4298), 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 04:45:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 4298 transitions. [2024-11-09 04:45:48,452 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 4298 transitions. Word has length 66 [2024-11-09 04:45:48,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:48,453 INFO L471 AbstractCegarLoop]: Abstraction has 3447 states and 4298 transitions. [2024-11-09 04:45:48,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 04:45:48,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 4298 transitions. [2024-11-09 04:45:48,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-09 04:45:48,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:48,454 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:45:48,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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)] Forceful destruction successful, exit code 0 [2024-11-09 04:45:48,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2024-11-09 04:45:48,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:45:48,856 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:48,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:48,856 INFO L85 PathProgramCache]: Analyzing trace with hash -643404155, now seen corresponding path program 1 times [2024-11-09 04:45:48,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:48,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635105790] [2024-11-09 04:45:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:48,857 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 04:45:48,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:48,858 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:48,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:48,942 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:45:48,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:49,632 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:49,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:49,973 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:49,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635105790] [2024-11-09 04:45:49,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635105790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:45:49,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [621817694] [2024-11-09 04:45:49,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:49,974 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:45:49,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:45:49,977 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:45:49,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-09 04:45:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:50,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-09 04:45:50,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-09 04:45:50,449 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:45:50,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [621817694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:45:50,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:45:50,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 8] total 19 [2024-11-09 04:45:50,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965746768] [2024-11-09 04:45:50,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:45:50,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:45:50,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:50,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:45:50,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:45:50,451 INFO L87 Difference]: Start difference. First operand 3447 states and 4298 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 04:45:50,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:50,705 INFO L93 Difference]: Finished difference Result 5715 states and 7230 transitions. [2024-11-09 04:45:50,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:45:50,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 66 [2024-11-09 04:45:50,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:50,721 INFO L225 Difference]: With dead ends: 5715 [2024-11-09 04:45:50,721 INFO L226 Difference]: Without dead ends: 4723 [2024-11-09 04:45:50,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-09 04:45:50,723 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 174 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:50,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 350 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:45:50,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4723 states. [2024-11-09 04:45:50,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4723 to 4211. [2024-11-09 04:45:50,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4211 states, 4210 states have (on average 1.2429928741092637) internal successors, (5233), 4210 states have internal predecessors, (5233), 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 04:45:50,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4211 states to 4211 states and 5233 transitions. [2024-11-09 04:45:50,949 INFO L78 Accepts]: Start accepts. Automaton has 4211 states and 5233 transitions. Word has length 66 [2024-11-09 04:45:50,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:45:50,949 INFO L471 AbstractCegarLoop]: Abstraction has 4211 states and 5233 transitions. [2024-11-09 04:45:50,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 04:45:50,950 INFO L276 IsEmpty]: Start isEmpty. Operand 4211 states and 5233 transitions. [2024-11-09 04:45:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-09 04:45:50,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:45:50,951 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:45:50,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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)] Forceful destruction successful, exit code 0 [2024-11-09 04:45:51,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2024-11-09 04:45:51,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:45:51,352 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:45:51,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:45:51,352 INFO L85 PathProgramCache]: Analyzing trace with hash -726733415, now seen corresponding path program 1 times [2024-11-09 04:45:51,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:45:51,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234426056] [2024-11-09 04:45:51,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:51,353 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 04:45:51,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:45:51,354 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:45:51,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (26)] Waiting until timeout for monitored process [2024-11-09 04:45:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:51,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:45:51,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:52,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:52,358 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:52,358 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:45:52,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234426056] [2024-11-09 04:45:52,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234426056] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:45:52,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [595206729] [2024-11-09 04:45:52,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:52,359 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:45:52,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:45:52,360 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:45:52,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2024-11-09 04:45:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:52,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 04:45:52,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:53,356 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:53,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:53,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [595206729] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:45:53,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578126055] [2024-11-09 04:45:53,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:45:53,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:45:53,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:45:53,666 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:45:53,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 04:45:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:45:53,776 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:45:53,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:45:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:54,705 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:45:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:45:54,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578126055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:45:54,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:45:54,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8, 8, 10, 8] total 37 [2024-11-09 04:45:54,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363401826] [2024-11-09 04:45:54,919 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:45:54,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-09 04:45:54,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:45:54,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-09 04:45:54,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2024-11-09 04:45:54,921 INFO L87 Difference]: Start difference. First operand 4211 states and 5233 transitions. Second operand has 37 states, 37 states have (on average 7.297297297297297) internal successors, (270), 37 states have internal predecessors, (270), 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 04:45:59,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:45:59,390 INFO L93 Difference]: Finished difference Result 16062 states and 20379 transitions. [2024-11-09 04:45:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-09 04:45:59,390 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 7.297297297297297) internal successors, (270), 37 states have internal predecessors, (270), 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 68 [2024-11-09 04:45:59,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:45:59,451 INFO L225 Difference]: With dead ends: 16062 [2024-11-09 04:45:59,451 INFO L226 Difference]: Without dead ends: 12579 [2024-11-09 04:45:59,457 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 368 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2087 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1537, Invalid=6119, Unknown=0, NotChecked=0, Total=7656 [2024-11-09 04:45:59,458 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 3850 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3850 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:45:59,458 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3850 Valid, 1258 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1056 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 04:45:59,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12579 states. [2024-11-09 04:45:59,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12579 to 9785. [2024-11-09 04:45:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9785 states, 9784 states have (on average 1.2471381847914964) internal successors, (12202), 9784 states have internal predecessors, (12202), 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 04:46:00,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9785 states to 9785 states and 12202 transitions. [2024-11-09 04:46:00,014 INFO L78 Accepts]: Start accepts. Automaton has 9785 states and 12202 transitions. Word has length 68 [2024-11-09 04:46:00,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:46:00,014 INFO L471 AbstractCegarLoop]: Abstraction has 9785 states and 12202 transitions. [2024-11-09 04:46:00,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 7.297297297297297) internal successors, (270), 37 states have internal predecessors, (270), 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 04:46:00,015 INFO L276 IsEmpty]: Start isEmpty. Operand 9785 states and 12202 transitions. [2024-11-09 04:46:00,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-09 04:46:00,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:46:00,017 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:46:00,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-09 04:46:00,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2024-11-09 04:46:00,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (26)] Forceful destruction successful, exit code 0 [2024-11-09 04:46:00,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:46:00,618 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:46:00,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:46:00,618 INFO L85 PathProgramCache]: Analyzing trace with hash 793191376, now seen corresponding path program 1 times [2024-11-09 04:46:00,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:46:00,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392482090] [2024-11-09 04:46:00,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:00,619 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 04:46:00,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:46:00,620 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:46:00,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (29)] Waiting until timeout for monitored process [2024-11-09 04:46:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:00,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:46:00,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:00,883 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:00,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:00,944 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:00,944 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:46:00,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392482090] [2024-11-09 04:46:00,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392482090] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:00,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1822078792] [2024-11-09 04:46:00,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:00,944 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:46:00,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:46:00,946 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:46:00,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-09 04:46:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:01,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:46:01,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:01,271 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:01,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:01,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1822078792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:01,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673940677] [2024-11-09 04:46:01,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:01,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:46:01,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:46:01,317 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:46:01,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 04:46:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:01,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:46:01,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:01,630 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:01,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:01,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673940677] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:01,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:46:01,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 18 [2024-11-09 04:46:01,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870097214] [2024-11-09 04:46:01,791 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:46:01,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 04:46:01,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:46:01,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 04:46:01,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-09 04:46:01,792 INFO L87 Difference]: Start difference. First operand 9785 states and 12202 transitions. Second operand has 18 states, 18 states have (on average 12.38888888888889) internal successors, (223), 18 states have internal predecessors, (223), 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 04:46:02,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:46:02,294 INFO L93 Difference]: Finished difference Result 17365 states and 21555 transitions. [2024-11-09 04:46:02,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 04:46:02,297 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.38888888888889) internal successors, (223), 18 states have internal predecessors, (223), 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 69 [2024-11-09 04:46:02,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:46:02,318 INFO L225 Difference]: With dead ends: 17365 [2024-11-09 04:46:02,318 INFO L226 Difference]: Without dead ends: 7718 [2024-11-09 04:46:02,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2024-11-09 04:46:02,327 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 399 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:46:02,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 447 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 04:46:02,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7718 states. [2024-11-09 04:46:02,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7718 to 7716. [2024-11-09 04:46:02,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7716 states, 7715 states have (on average 1.2206092028515878) internal successors, (9417), 7715 states have internal predecessors, (9417), 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 04:46:02,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7716 states to 7716 states and 9417 transitions. [2024-11-09 04:46:02,781 INFO L78 Accepts]: Start accepts. Automaton has 7716 states and 9417 transitions. Word has length 69 [2024-11-09 04:46:02,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:46:02,781 INFO L471 AbstractCegarLoop]: Abstraction has 7716 states and 9417 transitions. [2024-11-09 04:46:02,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.38888888888889) internal successors, (223), 18 states have internal predecessors, (223), 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 04:46:02,782 INFO L276 IsEmpty]: Start isEmpty. Operand 7716 states and 9417 transitions. [2024-11-09 04:46:02,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-09 04:46:02,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:46:02,783 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:46:02,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2024-11-09 04:46:02,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (29)] Forceful destruction successful, exit code 0 [2024-11-09 04:46:03,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-09 04:46:03,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:46:03,384 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:46:03,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:46:03,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1306449004, now seen corresponding path program 1 times [2024-11-09 04:46:03,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:46:03,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731958223] [2024-11-09 04:46:03,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:03,385 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 04:46:03,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:46:03,386 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:46:03,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (32)] Waiting until timeout for monitored process [2024-11-09 04:46:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:03,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:46:03,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:04,108 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:04,108 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:04,353 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:04,353 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:46:04,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731958223] [2024-11-09 04:46:04,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731958223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:04,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [903663350] [2024-11-09 04:46:04,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:04,353 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:46:04,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:46:04,355 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:46:04,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-09 04:46:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:04,535 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-09 04:46:04,537 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:07,113 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:09,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [903663350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:09,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950571537] [2024-11-09 04:46:09,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:09,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:46:09,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:46:09,052 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:46:09,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 04:46:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:09,171 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:46:09,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:10,150 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:10,150 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:10,421 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:10,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950571537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:10,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:46:10,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 19, 18, 10, 9] total 54 [2024-11-09 04:46:10,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495367203] [2024-11-09 04:46:10,421 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:46:10,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-09 04:46:10,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:46:10,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-09 04:46:10,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=2437, Unknown=0, NotChecked=0, Total=2862 [2024-11-09 04:46:10,424 INFO L87 Difference]: Start difference. First operand 7716 states and 9417 transitions. Second operand has 54 states, 54 states have (on average 5.333333333333333) internal successors, (288), 54 states have internal predecessors, (288), 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 04:46:30,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:46:30,814 INFO L93 Difference]: Finished difference Result 51780 states and 63171 transitions. [2024-11-09 04:46:30,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-11-09 04:46:30,815 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.333333333333333) internal successors, (288), 54 states have internal predecessors, (288), 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 70 [2024-11-09 04:46:30,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:46:30,889 INFO L225 Difference]: With dead ends: 51780 [2024-11-09 04:46:30,890 INFO L226 Difference]: Without dead ends: 44100 [2024-11-09 04:46:30,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 361 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10679 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=6298, Invalid=20434, Unknown=0, NotChecked=0, Total=26732 [2024-11-09 04:46:30,906 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 4843 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 2575 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4843 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 2575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:46:30,906 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4843 Valid, 2697 Invalid, 2795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 2575 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-09 04:46:30,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44100 states. [2024-11-09 04:46:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44100 to 19929. [2024-11-09 04:46:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19929 states, 19928 states have (on average 1.2228020875150543) internal successors, (24368), 19928 states have internal predecessors, (24368), 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 04:46:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19929 states to 19929 states and 24368 transitions. [2024-11-09 04:46:32,479 INFO L78 Accepts]: Start accepts. Automaton has 19929 states and 24368 transitions. Word has length 70 [2024-11-09 04:46:32,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:46:32,479 INFO L471 AbstractCegarLoop]: Abstraction has 19929 states and 24368 transitions. [2024-11-09 04:46:32,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.333333333333333) internal successors, (288), 54 states have internal predecessors, (288), 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 04:46:32,480 INFO L276 IsEmpty]: Start isEmpty. Operand 19929 states and 24368 transitions. [2024-11-09 04:46:32,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-09 04:46:32,487 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:46:32,487 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:46:32,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-09 04:46:32,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2024-11-09 04:46:32,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (32)] Forceful destruction successful, exit code 0 [2024-11-09 04:46:33,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:46:33,091 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:46:33,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:46:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1543335420, now seen corresponding path program 1 times [2024-11-09 04:46:33,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:46:33,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141543039] [2024-11-09 04:46:33,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:33,093 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 04:46:33,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:46:33,095 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:46:33,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (35)] Waiting until timeout for monitored process [2024-11-09 04:46:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:33,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 04:46:33,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 04:46:34,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:34,391 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 04:46:34,391 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:46:34,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141543039] [2024-11-09 04:46:34,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141543039] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:34,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [98188016] [2024-11-09 04:46:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:34,392 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:46:34,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:46:34,393 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:46:34,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-09 04:46:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:34,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:46:34,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-09 04:46:34,633 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:46:34,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [98188016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:46:34,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:46:34,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9, 8] total 17 [2024-11-09 04:46:34,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270677222] [2024-11-09 04:46:34,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:46:34,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:46:34,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:46:34,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:46:34,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:46:34,636 INFO L87 Difference]: Start difference. First operand 19929 states and 24368 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 04:46:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:46:35,478 INFO L93 Difference]: Finished difference Result 32681 states and 40003 transitions. [2024-11-09 04:46:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:46:35,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 110 [2024-11-09 04:46:35,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:46:35,498 INFO L225 Difference]: With dead ends: 32681 [2024-11-09 04:46:35,498 INFO L226 Difference]: Without dead ends: 14601 [2024-11-09 04:46:35,512 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-09 04:46:35,512 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 28 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:46:35,513 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 198 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:46:35,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14601 states. [2024-11-09 04:46:36,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14601 to 14108. [2024-11-09 04:46:36,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14108 states, 14107 states have (on average 1.2183313248741758) internal successors, (17187), 14107 states have internal predecessors, (17187), 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 04:46:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14108 states to 14108 states and 17187 transitions. [2024-11-09 04:46:36,453 INFO L78 Accepts]: Start accepts. Automaton has 14108 states and 17187 transitions. Word has length 110 [2024-11-09 04:46:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:46:36,454 INFO L471 AbstractCegarLoop]: Abstraction has 14108 states and 17187 transitions. [2024-11-09 04:46:36,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 04:46:36,454 INFO L276 IsEmpty]: Start isEmpty. Operand 14108 states and 17187 transitions. [2024-11-09 04:46:36,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-09 04:46:36,460 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:46:36,461 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:46:36,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (35)] Ended with exit code 0 [2024-11-09 04:46:36,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2024-11-09 04:46:36,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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=3,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:46:36,861 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:46:36,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:46:36,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1619160656, now seen corresponding path program 1 times [2024-11-09 04:46:36,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:46:36,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063238435] [2024-11-09 04:46:36,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:36,863 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 04:46:36,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:46:36,864 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:46:36,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (37)] Waiting until timeout for monitored process [2024-11-09 04:46:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:36,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:46:36,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:37,188 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 04:46:37,188 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 04:46:37,260 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:46:37,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063238435] [2024-11-09 04:46:37,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063238435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:37,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1254663248] [2024-11-09 04:46:37,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:37,260 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:46:37,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:46:37,261 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:46:37,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2024-11-09 04:46:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:37,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:46:37,452 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:37,510 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-09 04:46:37,510 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:46:37,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1254663248] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:46:37,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:46:37,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 10 [2024-11-09 04:46:37,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850711503] [2024-11-09 04:46:37,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:46:37,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:46:37,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:46:37,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:46:37,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 04:46:37,512 INFO L87 Difference]: Start difference. First operand 14108 states and 17187 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 04:46:38,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:46:38,488 INFO L93 Difference]: Finished difference Result 34992 states and 42222 transitions. [2024-11-09 04:46:38,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:46:38,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 113 [2024-11-09 04:46:38,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:46:38,515 INFO L225 Difference]: With dead ends: 34992 [2024-11-09 04:46:38,516 INFO L226 Difference]: Without dead ends: 20107 [2024-11-09 04:46:38,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-09 04:46:38,530 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 24 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:46:38,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 217 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:46:38,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20107 states. [2024-11-09 04:46:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20107 to 10969. [2024-11-09 04:46:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10969 states, 10968 states have (on average 1.1835339168490153) internal successors, (12981), 10968 states have internal predecessors, (12981), 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 04:46:39,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10969 states to 10969 states and 12981 transitions. [2024-11-09 04:46:39,621 INFO L78 Accepts]: Start accepts. Automaton has 10969 states and 12981 transitions. Word has length 113 [2024-11-09 04:46:39,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:46:39,621 INFO L471 AbstractCegarLoop]: Abstraction has 10969 states and 12981 transitions. [2024-11-09 04:46:39,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 04:46:39,621 INFO L276 IsEmpty]: Start isEmpty. Operand 10969 states and 12981 transitions. [2024-11-09 04:46:39,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-09 04:46:39,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:46:39,627 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:46:39,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2024-11-09 04:46:39,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (37)] Forceful destruction successful, exit code 0 [2024-11-09 04:46:40,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:46:40,028 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:46:40,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:46:40,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1001998311, now seen corresponding path program 1 times [2024-11-09 04:46:40,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:46:40,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962418102] [2024-11-09 04:46:40,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:40,029 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 04:46:40,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:46:40,030 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:46:40,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (39)] Waiting until timeout for monitored process [2024-11-09 04:46:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:40,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 04:46:40,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:41,614 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 35 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:41,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:42,238 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 35 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:42,239 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:46:42,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962418102] [2024-11-09 04:46:42,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962418102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:42,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [251821777] [2024-11-09 04:46:42,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:42,239 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:46:42,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:46:42,240 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:46:42,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2024-11-09 04:46:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:42,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-09 04:46:42,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:42,490 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 04:46:42,490 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 04:46:42,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [251821777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:46:42,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 04:46:42,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14, 13] total 27 [2024-11-09 04:46:42,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159441137] [2024-11-09 04:46:42,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:46:42,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:46:42,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:46:42,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:46:42,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-11-09 04:46:42,492 INFO L87 Difference]: Start difference. First operand 10969 states and 12981 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 04:46:43,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:46:43,318 INFO L93 Difference]: Finished difference Result 13493 states and 15894 transitions. [2024-11-09 04:46:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:46:43,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 115 [2024-11-09 04:46:43,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:46:43,327 INFO L225 Difference]: With dead ends: 13493 [2024-11-09 04:46:43,327 INFO L226 Difference]: Without dead ends: 10567 [2024-11-09 04:46:43,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-11-09 04:46:43,330 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 36 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:46:43,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 172 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 04:46:43,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10567 states. [2024-11-09 04:46:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10567 to 8755. [2024-11-09 04:46:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8755 states, 8754 states have (on average 1.157071053232808) internal successors, (10129), 8754 states have internal predecessors, (10129), 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 04:46:43,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8755 states to 8755 states and 10129 transitions. [2024-11-09 04:46:43,960 INFO L78 Accepts]: Start accepts. Automaton has 8755 states and 10129 transitions. Word has length 115 [2024-11-09 04:46:43,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:46:43,960 INFO L471 AbstractCegarLoop]: Abstraction has 8755 states and 10129 transitions. [2024-11-09 04:46:43,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 04:46:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 8755 states and 10129 transitions. [2024-11-09 04:46:43,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-09 04:46:43,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:46:43,965 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:46:43,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (39)] Ended with exit code 0 [2024-11-09 04:46:44,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2024-11-09 04:46:44,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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=3,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt [2024-11-09 04:46:44,366 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:46:44,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:46:44,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1561706615, now seen corresponding path program 1 times [2024-11-09 04:46:44,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:46:44,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680755332] [2024-11-09 04:46:44,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:44,367 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 04:46:44,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:46:44,369 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:46:44,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (41)] Waiting until timeout for monitored process [2024-11-09 04:46:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:44,496 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:46:44,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:44,637 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 04:46:44,637 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:44,690 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 04:46:44,690 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:46:44,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680755332] [2024-11-09 04:46:44,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680755332] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:44,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [770434518] [2024-11-09 04:46:44,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:44,691 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:46:44,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:46:44,692 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:46:44,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2024-11-09 04:46:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:44,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-09 04:46:44,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:45,052 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 04:46:45,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-09 04:46:45,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [770434518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:45,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323562031] [2024-11-09 04:46:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:45,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:46:45,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:46:45,091 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:46:45,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-09 04:46:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:45,223 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 04:46:45,225 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:45,461 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 04:46:45,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-09 04:46:45,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323562031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:45,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:46:45,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 18 [2024-11-09 04:46:45,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192871875] [2024-11-09 04:46:45,739 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:46:45,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 04:46:45,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:46:45,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 04:46:45,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-09 04:46:45,740 INFO L87 Difference]: Start difference. First operand 8755 states and 10129 transitions. Second operand has 18 states, 18 states have (on average 13.11111111111111) internal successors, (236), 18 states have internal predecessors, (236), 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 04:46:46,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:46:46,568 INFO L93 Difference]: Finished difference Result 12004 states and 13840 transitions. [2024-11-09 04:46:46,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 04:46:46,568 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.11111111111111) internal successors, (236), 18 states have internal predecessors, (236), 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 115 [2024-11-09 04:46:46,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:46:46,575 INFO L225 Difference]: With dead ends: 12004 [2024-11-09 04:46:46,575 INFO L226 Difference]: Without dead ends: 8528 [2024-11-09 04:46:46,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 690 GetRequests, 668 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2024-11-09 04:46:46,578 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 428 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:46:46,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 517 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 04:46:46,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8528 states. [2024-11-09 04:46:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8528 to 8526. [2024-11-09 04:46:47,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8526 states, 8525 states have (on average 1.1527272727272728) internal successors, (9827), 8525 states have internal predecessors, (9827), 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 04:46:47,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8526 states to 8526 states and 9827 transitions. [2024-11-09 04:46:47,465 INFO L78 Accepts]: Start accepts. Automaton has 8526 states and 9827 transitions. Word has length 115 [2024-11-09 04:46:47,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:46:47,465 INFO L471 AbstractCegarLoop]: Abstraction has 8526 states and 9827 transitions. [2024-11-09 04:46:47,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 13.11111111111111) internal successors, (236), 18 states have internal predecessors, (236), 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 04:46:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 8526 states and 9827 transitions. [2024-11-09 04:46:47,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-09 04:46:47,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:46:47,470 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:46:47,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (41)] Forceful destruction successful, exit code 0 [2024-11-09 04:46:47,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2024-11-09 04:46:47,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-09 04:46:48,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:46:48,071 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 04:46:48,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:46:48,072 INFO L85 PathProgramCache]: Analyzing trace with hash 998862518, now seen corresponding path program 1 times [2024-11-09 04:46:48,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-09 04:46:48,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751971280] [2024-11-09 04:46:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:48,072 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 04:46:48,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/mathsat [2024-11-09 04:46:48,074 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 04:46:48,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/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 (44)] Waiting until timeout for monitored process [2024-11-09 04:46:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:48,214 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-09 04:46:48,216 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 36 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:49,958 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:50,778 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 36 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:50,778 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-09 04:46:50,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751971280] [2024-11-09 04:46:50,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751971280] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:50,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1840639847] [2024-11-09 04:46:50,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:50,779 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-09 04:46:50,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 [2024-11-09 04:46:50,780 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-09 04:46:50,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2024-11-09 04:46:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:51,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 04:46:51,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:46:54,800 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 62 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-09 04:46:54,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:46:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 36 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:46:57,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1840639847] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:46:57,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784518691] [2024-11-09 04:46:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:46:57,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:46:57,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:46:57,568 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:46:57,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c095dea-3cd8-42ad-a29b-8e570509bcb7/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-09 04:46:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:46:57,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 04:46:57,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:47:00,525 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 16 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:47:00,526 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:47:01,856 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 16 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:47:01,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784518691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:47:01,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-09 04:47:01,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 21, 20, 15, 14] total 81 [2024-11-09 04:47:01,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023449637] [2024-11-09 04:47:01,857 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-09 04:47:01,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-09 04:47:01,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-09 04:47:01,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-09 04:47:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=5870, Unknown=0, NotChecked=0, Total=6480 [2024-11-09 04:47:01,861 INFO L87 Difference]: Start difference. First operand 8526 states and 9827 transitions. Second operand has 81 states, 81 states have (on average 6.728395061728395) internal successors, (545), 81 states have internal predecessors, (545), 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)