./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E --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 9db88713350d7306821dd75614e70e6b858505d66168ef8348e173e7f0890ab2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:22:04,842 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:22:04,914 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:22:04,926 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:22:04,928 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:22:04,964 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:22:04,967 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:22:04,968 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:22:04,968 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:22:04,968 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:22:04,969 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:22:04,969 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:22:04,969 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:22:04,969 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:22:04,971 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:22:04,971 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:22:04,972 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:22:04,972 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:22:04,972 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:22:04,972 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:22:04,972 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:22:04,972 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:22:04,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:22:04,973 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:22:04,973 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:22:04,973 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:22:04,973 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:22:04,973 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:22:04,973 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:22:04,973 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:22:04,974 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:22:04,974 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:22:04,974 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:22:04,974 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:22:04,974 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:22:04,974 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:22:04,974 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:22:04,974 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:22:04,974 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:22:04,977 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:22:04,977 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:22:04,977 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:22:04,977 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:22:04,977 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:22:04,977 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:22:04,977 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:22:04,977 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:22:04,977 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E 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 -> 9db88713350d7306821dd75614e70e6b858505d66168ef8348e173e7f0890ab2 [2024-11-14 04:22:05,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:22:05,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:22:05,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:22:05,329 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:22:05,330 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:22:05,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c Unable to find full path for "g++" [2024-11-14 04:22:07,461 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:22:07,781 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:22:07,782 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2024-11-14 04:22:07,794 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/data/286ae4b10/0a0fd521f1eb4c03aa7bf20d8552e22c/FLAGb9c9bdd42 [2024-11-14 04:22:08,041 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/data/286ae4b10/0a0fd521f1eb4c03aa7bf20d8552e22c [2024-11-14 04:22:08,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:22:08,046 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:22:08,047 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:22:08,047 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:22:08,052 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:22:08,053 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:22:08" (1/1) ... [2024-11-14 04:22:08,054 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6a907d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:22:08, skipping insertion in model container [2024-11-14 04:22:08,055 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:22:08" (1/1) ... [2024-11-14 04:22:08,091 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:22:08,412 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_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c[9529,9542] [2024-11-14 04:22:08,416 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:22:08,439 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:22:08,549 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_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c[9529,9542] [2024-11-14 04:22:08,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:22:08,582 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:22:08,582 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:22:08 WrapperNode [2024-11-14 04:22:08,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:22:08,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:22:08,587 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:22:08,587 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:22:08,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:22:08" (1/1) ... [2024-11-14 04:22:08,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:22:08" (1/1) ... [2024-11-14 04:22:08,678 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 315 [2024-11-14 04:22:08,682 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:22:08,683 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:22:08,683 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:22:08,683 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:22:08,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:22:08" (1/1) ... [2024-11-14 04:22:08,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:22:08" (1/1) ... [2024-11-14 04:22:08,704 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:22:08" (1/1) ... [2024-11-14 04:22:08,708 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:22:08" (1/1) ... [2024-11-14 04:22:08,722 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:22:08" (1/1) ... [2024-11-14 04:22:08,734 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:22:08" (1/1) ... [2024-11-14 04:22:08,737 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:22:08" (1/1) ... [2024-11-14 04:22:08,739 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:22:08" (1/1) ... [2024-11-14 04:22:08,743 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:22:08,744 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:22:08,744 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:22:08,745 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:22:08,746 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:22:08" (1/1) ... [2024-11-14 04:22:08,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:22:08,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:22:08,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:22:08,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:22:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:22:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:22:08,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:22:08,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:22:08,945 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:22:08,948 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:22:09,567 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2024-11-14 04:22:09,567 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:22:10,191 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:22:10,192 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:22:10,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:22:10 BoogieIcfgContainer [2024-11-14 04:22:10,192 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:22:10,195 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:22:10,196 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:22:10,201 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:22:10,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:22:08" (1/3) ... [2024-11-14 04:22:10,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a86e914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:22:10, skipping insertion in model container [2024-11-14 04:22:10,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:22:08" (2/3) ... [2024-11-14 04:22:10,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a86e914 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:22:10, skipping insertion in model container [2024-11-14 04:22:10,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:22:10" (3/3) ... [2024-11-14 04:22:10,204 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2024-11-14 04:22:10,225 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:22:10,229 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c that has 1 procedures, 7 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 04:22:10,303 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:22:10,322 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;@641bac99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:22:10,322 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:22:10,327 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) [2024-11-14 04:22:10,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-14 04:22:10,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:22:10,335 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-14 04:22:10,336 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:22:10,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:22:10,343 INFO L85 PathProgramCache]: Analyzing trace with hash 16910066, now seen corresponding path program 1 times [2024-11-14 04:22:10,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:22:10,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518097841] [2024-11-14 04:22:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:22:10,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:22:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:22:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:22:13,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:22:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518097841] [2024-11-14 04:22:13,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518097841] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:22:13,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:22:13,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:22:13,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869454015] [2024-11-14 04:22:13,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:22:13,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:22:13,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:22:13,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:22:13,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:22:13,183 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) [2024-11-14 04:22:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:22:13,246 INFO L93 Difference]: Finished difference Result 14 states and 19 transitions. [2024-11-14 04:22:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:22:13,249 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 [2024-11-14 04:22:13,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:22:13,255 INFO L225 Difference]: With dead ends: 14 [2024-11-14 04:22:13,255 INFO L226 Difference]: Without dead ends: 8 [2024-11-14 04:22:13,259 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 [2024-11-14 04:22:13,262 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:22:13,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:22:13,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-11-14 04:22:13,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-14 04:22:13,292 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) [2024-11-14 04:22:13,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2024-11-14 04:22:13,298 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2024-11-14 04:22:13,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:22:13,299 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2024-11-14 04:22:13,299 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) [2024-11-14 04:22:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2024-11-14 04:22:13,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-14 04:22:13,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:22:13,301 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2024-11-14 04:22:13,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:22:13,301 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:22:13,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:22:13,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1261834568, now seen corresponding path program 1 times [2024-11-14 04:22:13,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:22:13,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615625095] [2024-11-14 04:22:13,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:22:13,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:22:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:22:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:22:20,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:22:20,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615625095] [2024-11-14 04:22:20,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615625095] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:22:20,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26209553] [2024-11-14 04:22:20,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:22:20,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:22:20,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:22:20,661 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:22:20,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:22:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:22:21,012 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-14 04:22:21,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:22:27,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:22:27,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:24:30,880 WARN L286 SmtUtils]: Spent 22.09s on a formula simplification. DAG size of input: 513 DAG size of output: 507 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:28:59,715 WARN L286 SmtUtils]: Spent 20.05s on a formula simplification that was a NOOP. DAG size: 511 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:34:21,978 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-14 04:34:21,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/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") [2024-11-14 04:34:21,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1602196994] [2024-11-14 04:34:21,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2024-11-14 04:34:21,997 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2024-11-14 04:34:21,998 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:34:22,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:34:22,006 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:34:22,006 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:34:22,027 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/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:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) 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:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 44 more [2024-11-14 04:34:22,031 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:34:22,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2024-11-14 04:34:22,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271631712] [2024-11-14 04:34:22,032 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:34:22,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:34:22,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:34:22,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:34:22,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:34:22,034 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) [2024-11-14 04:34:22,035 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 43.9s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-14 04:34:22,036 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 [2024-11-14 04:34:22,036 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] [2024-11-14 04:34:22,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:34:22,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:22,237 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_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/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:1708) at java.base/java.util.stream.ReferencePipeline$Head.forEach(ReferencePipeline.java:762) 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:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:276) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) 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:447) at java.base/java.io.OutputStream.write(OutputStream.java:167) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:125) at java.base/java.io.BufferedOutputStream.implFlush(BufferedOutputStream.java:252) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:246) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:412) at java.base/sun.nio.cs.StreamEncoder.lockedFlush(StreamEncoder.java:214) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:201) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:262) at java.base/java.io.BufferedWriter.implFlush(BufferedWriter.java:372) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:359) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:175) ... 36 more [2024-11-14 04:34:22,240 INFO L158 Benchmark]: Toolchain (without parser) took 734195.00ms. Allocated memory was 109.1MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 83.6MB in the beginning and 812.4MB in the end (delta: -728.8MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-11-14 04:34:22,241 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 83.9MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:34:22,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 539.25ms. Allocated memory is still 109.1MB. Free memory was 83.6MB in the beginning and 68.3MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:34:22,241 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.90ms. Allocated memory is still 109.1MB. Free memory was 68.3MB in the beginning and 66.0MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:34:22,242 INFO L158 Benchmark]: Boogie Preprocessor took 60.80ms. Allocated memory is still 109.1MB. Free memory was 66.0MB in the beginning and 64.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:34:22,242 INFO L158 Benchmark]: RCFGBuilder took 1448.10ms. Allocated memory is still 109.1MB. Free memory was 64.3MB in the beginning and 50.5MB in the end (delta: 13.8MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. [2024-11-14 04:34:22,242 INFO L158 Benchmark]: TraceAbstraction took 732044.29ms. Allocated memory was 109.1MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 49.7MB in the beginning and 812.4MB in the end (delta: -762.6MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-11-14 04:34:22,246 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 83.9MB. Free memory is still 40.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 539.25ms. Allocated memory is still 109.1MB. Free memory was 83.6MB in the beginning and 68.3MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.90ms. Allocated memory is still 109.1MB. Free memory was 68.3MB in the beginning and 66.0MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.80ms. Allocated memory is still 109.1MB. Free memory was 66.0MB in the beginning and 64.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1448.10ms. Allocated memory is still 109.1MB. Free memory was 64.3MB in the beginning and 50.5MB in the end (delta: 13.8MB). Peak memory consumption was 43.4MB. Max. memory is 16.1GB. * TraceAbstraction took 732044.29ms. Allocated memory was 109.1MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 49.7MB in the beginning and 812.4MB in the end (delta: -762.6MB). Peak memory consumption was 1.2GB. 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_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/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_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E --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 9db88713350d7306821dd75614e70e6b858505d66168ef8348e173e7f0890ab2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:34:24,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:34:25,110 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-14 04:34:25,127 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:34:25,127 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:34:25,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:34:25,171 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:34:25,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:34:25,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:34:25,171 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:34:25,171 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:34:25,171 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:34:25,173 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:34:25,173 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:34:25,174 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:34:25,175 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:34:25,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:34:25,176 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:34:25,176 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:34:25,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:34:25,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:34:25,177 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:34:25,177 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:34:25,177 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:34:25,177 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:34:25,177 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 04:34:25,177 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:34:25,177 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 04:34:25,178 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:34:25,178 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:34:25,178 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:34:25,178 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:34:25,178 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 04:34:25,179 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:34:25,179 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:34:25,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:34:25,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:34:25,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:34:25,180 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:34:25,180 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 04:34:25,180 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 04:34:25,180 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:34:25,180 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:34:25,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E 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 -> 9db88713350d7306821dd75614e70e6b858505d66168ef8348e173e7f0890ab2 [2024-11-14 04:34:25,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:34:25,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:34:25,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:34:25,585 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:34:25,585 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:34:25,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c Unable to find full path for "g++" [2024-11-14 04:34:27,491 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:34:27,862 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:34:27,863 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2024-11-14 04:34:27,881 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/data/58e50e7f0/247e449a5d6a4679b2a8e0e082445e44/FLAG3be49ae17 [2024-11-14 04:34:27,905 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/data/58e50e7f0/247e449a5d6a4679b2a8e0e082445e44 [2024-11-14 04:34:27,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:34:27,912 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:34:27,915 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:34:27,915 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:34:27,921 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:34:27,922 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:34:27" (1/1) ... [2024-11-14 04:34:27,923 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d151990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:27, skipping insertion in model container [2024-11-14 04:34:27,926 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:34:27" (1/1) ... [2024-11-14 04:34:27,957 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:34:28,262 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_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c[9529,9542] [2024-11-14 04:34:28,265 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:34:28,288 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:34:28,385 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_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c[9529,9542] [2024-11-14 04:34:28,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:34:28,414 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:34:28,416 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:28 WrapperNode [2024-11-14 04:34:28,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:34:28,418 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:34:28,418 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:34:28,418 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:34:28,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:28" (1/1) ... [2024-11-14 04:34:28,443 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:28" (1/1) ... [2024-11-14 04:34:28,487 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 301 [2024-11-14 04:34:28,491 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:34:28,492 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:34:28,492 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:34:28,492 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:34:28,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:28" (1/1) ... [2024-11-14 04:34:28,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:28" (1/1) ... [2024-11-14 04:34:28,506 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:28" (1/1) ... [2024-11-14 04:34:28,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:28" (1/1) ... [2024-11-14 04:34:28,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:28" (1/1) ... [2024-11-14 04:34:28,536 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:28" (1/1) ... [2024-11-14 04:34:28,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:28" (1/1) ... [2024-11-14 04:34:28,543 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:28" (1/1) ... [2024-11-14 04:34:28,549 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:34:28,550 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:34:28,550 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:34:28,554 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:34:28,555 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:28" (1/1) ... [2024-11-14 04:34:28,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:34:28,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:34:28,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:34:28,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:34:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:34:28,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 04:34:28,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:34:28,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:34:28,776 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:34:28,779 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:34:29,439 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2024-11-14 04:34:29,440 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:34:29,454 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:34:29,456 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 04:34:29,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:34:29 BoogieIcfgContainer [2024-11-14 04:34:29,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:34:29,460 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:34:29,460 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:34:29,465 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:34:29,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:34:27" (1/3) ... [2024-11-14 04:34:29,466 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fbef04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:34:29, skipping insertion in model container [2024-11-14 04:34:29,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:34:28" (2/3) ... [2024-11-14 04:34:29,467 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52fbef04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:34:29, skipping insertion in model container [2024-11-14 04:34:29,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:34:29" (3/3) ... [2024-11-14 04:34:29,470 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c [2024-11-14 04:34:29,487 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:34:29,489 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c that has 1 procedures, 86 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-14 04:34:29,569 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:34:29,587 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;@447206f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:34:29,588 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 04:34:29,594 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 85 states have internal predecessors, (145), 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) [2024-11-14 04:34:29,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 04:34:29,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:29,604 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] [2024-11-14 04:34:29,605 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:29,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:29,614 INFO L85 PathProgramCache]: Analyzing trace with hash -939868314, now seen corresponding path program 1 times [2024-11-14 04:34:29,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:29,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852276444] [2024-11-14 04:34:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:29,630 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 [2024-11-14 04:34:29,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:29,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:29,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:29,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-14 04:34:29,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:29,834 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:29,834 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:29,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852276444] [2024-11-14 04:34:29,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852276444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:29,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:34:29,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-14 04:34:29,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732104353] [2024-11-14 04:34:29,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:29,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-14 04:34:29,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:29,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-14 04:34:29,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:34:29,877 INFO L87 Difference]: Start difference. First operand has 86 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 85 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-11-14 04:34:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:29,909 INFO L93 Difference]: Finished difference Result 139 states and 233 transitions. [2024-11-14 04:34:29,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-14 04:34:29,915 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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 29 [2024-11-14 04:34:29,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:29,926 INFO L225 Difference]: With dead ends: 139 [2024-11-14 04:34:29,926 INFO L226 Difference]: Without dead ends: 82 [2024-11-14 04:34:29,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-14 04:34:29,934 INFO L432 NwaCegarLoop]: 138 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, 138 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:29,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:34:29,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-14 04:34:29,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-14 04:34:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.7037037037037037) internal successors, (138), 81 states have internal predecessors, (138), 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) [2024-11-14 04:34:29,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 138 transitions. [2024-11-14 04:34:29,984 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 138 transitions. Word has length 29 [2024-11-14 04:34:29,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:29,984 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 138 transitions. [2024-11-14 04:34:29,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 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) [2024-11-14 04:34:29,985 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 138 transitions. [2024-11-14 04:34:29,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-14 04:34:29,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:29,986 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] [2024-11-14 04:34:29,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:30,187 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:34:30,187 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:30,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:30,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1073881820, now seen corresponding path program 1 times [2024-11-14 04:34:30,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:30,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382273776] [2024-11-14 04:34:30,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:30,189 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 [2024-11-14 04:34:30,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:30,191 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:30,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:30,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:34:30,305 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:30,370 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:30,370 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:30,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382273776] [2024-11-14 04:34:30,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382273776] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:30,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:34:30,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:34:30,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385027854] [2024-11-14 04:34:30,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:30,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:34:30,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:30,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:34:30,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:34:30,373 INFO L87 Difference]: Start difference. First operand 82 states and 138 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-14 04:34:30,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:30,464 INFO L93 Difference]: Finished difference Result 138 states and 226 transitions. [2024-11-14 04:34:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:34:30,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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 29 [2024-11-14 04:34:30,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:30,467 INFO L225 Difference]: With dead ends: 138 [2024-11-14 04:34:30,467 INFO L226 Difference]: Without dead ends: 82 [2024-11-14 04:34:30,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:34:30,468 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:30,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 515 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:34:30,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-14 04:34:30,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-14 04:34:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 81 states have internal predecessors, (114), 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) [2024-11-14 04:34:30,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 114 transitions. [2024-11-14 04:34:30,476 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 114 transitions. Word has length 29 [2024-11-14 04:34:30,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:30,476 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 114 transitions. [2024-11-14 04:34:30,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 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) [2024-11-14 04:34:30,477 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 114 transitions. [2024-11-14 04:34:30,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 04:34:30,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:30,478 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:30,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-14 04:34:30,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:34:30,681 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:30,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:30,681 INFO L85 PathProgramCache]: Analyzing trace with hash -84845283, now seen corresponding path program 1 times [2024-11-14 04:34:30,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:30,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225414012] [2024-11-14 04:34:30,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:30,682 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 [2024-11-14 04:34:30,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:30,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:30,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:30,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:30,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:34:30,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:30,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:30,964 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:30,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225414012] [2024-11-14 04:34:30,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225414012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:30,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:34:30,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:34:30,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271333751] [2024-11-14 04:34:30,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:30,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:34:30,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:30,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:34:30,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:34:30,966 INFO L87 Difference]: Start difference. First operand 82 states and 114 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-14 04:34:31,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:31,009 INFO L93 Difference]: Finished difference Result 178 states and 268 transitions. [2024-11-14 04:34:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:34:31,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2024-11-14 04:34:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:31,015 INFO L225 Difference]: With dead ends: 178 [2024-11-14 04:34:31,015 INFO L226 Difference]: Without dead ends: 126 [2024-11-14 04:34:31,016 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:34:31,016 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 60 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 219 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 [2024-11-14 04:34:31,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 219 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:34:31,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-14 04:34:31,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2024-11-14 04:34:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.4796747967479675) internal successors, (182), 123 states have internal predecessors, (182), 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) [2024-11-14 04:34:31,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions. [2024-11-14 04:34:31,038 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 182 transitions. Word has length 52 [2024-11-14 04:34:31,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:31,039 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 182 transitions. [2024-11-14 04:34:31,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-14 04:34:31,039 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 182 transitions. [2024-11-14 04:34:31,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 04:34:31,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:31,042 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:31,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:31,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:34:31,243 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:31,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash -979100962, now seen corresponding path program 1 times [2024-11-14 04:34:31,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:31,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081211637] [2024-11-14 04:34:31,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:31,244 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 [2024-11-14 04:34:31,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:31,246 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:31,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:31,365 INFO L255 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:34:31,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:32,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:32,248 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:32,249 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:32,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081211637] [2024-11-14 04:34:32,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081211637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:32,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:34:32,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 04:34:32,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457872886] [2024-11-14 04:34:32,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:32,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:34:32,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:32,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:34:32,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:34:32,251 INFO L87 Difference]: Start difference. First operand 124 states and 182 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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) [2024-11-14 04:34:32,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:32,430 INFO L93 Difference]: Finished difference Result 594 states and 942 transitions. [2024-11-14 04:34:32,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:34:32,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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 52 [2024-11-14 04:34:32,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:32,435 INFO L225 Difference]: With dead ends: 594 [2024-11-14 04:34:32,435 INFO L226 Difference]: Without dead ends: 500 [2024-11-14 04:34:32,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:34:32,438 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 372 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:32,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 489 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:34:32,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-14 04:34:32,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 216. [2024-11-14 04:34:32,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.5302325581395348) internal successors, (329), 215 states have internal predecessors, (329), 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) [2024-11-14 04:34:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 329 transitions. [2024-11-14 04:34:32,493 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 329 transitions. Word has length 52 [2024-11-14 04:34:32,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:32,493 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 329 transitions. [2024-11-14 04:34:32,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 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) [2024-11-14 04:34:32,493 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 329 transitions. [2024-11-14 04:34:32,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 04:34:32,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:32,495 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:32,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:32,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:34:32,696 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:32,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:32,697 INFO L85 PathProgramCache]: Analyzing trace with hash -670682120, now seen corresponding path program 1 times [2024-11-14 04:34:32,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:32,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416251679] [2024-11-14 04:34:32,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:32,698 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 [2024-11-14 04:34:32,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:32,702 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:32,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:32,844 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:34:32,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:32,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:32,893 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:32,893 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:32,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416251679] [2024-11-14 04:34:32,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416251679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:32,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:34:32,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:34:32,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990784284] [2024-11-14 04:34:32,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:32,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:34:32,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:34:32,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:34:32,896 INFO L87 Difference]: Start difference. First operand 216 states and 329 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2024-11-14 04:34:32,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:32,947 INFO L93 Difference]: Finished difference Result 230 states and 346 transitions. [2024-11-14 04:34:32,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:34:32,948 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 53 [2024-11-14 04:34:32,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:32,950 INFO L225 Difference]: With dead ends: 230 [2024-11-14 04:34:32,950 INFO L226 Difference]: Without dead ends: 228 [2024-11-14 04:34:32,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:34:32,952 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 0 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 436 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 [2024-11-14 04:34:32,952 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 436 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:34:32,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-14 04:34:32,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-11-14 04:34:32,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.502202643171806) internal successors, (341), 227 states have internal predecessors, (341), 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) [2024-11-14 04:34:32,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 341 transitions. [2024-11-14 04:34:32,986 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 341 transitions. Word has length 53 [2024-11-14 04:34:32,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:32,986 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 341 transitions. [2024-11-14 04:34:32,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2024-11-14 04:34:32,987 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 341 transitions. [2024-11-14 04:34:32,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 04:34:32,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:32,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:32,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:33,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:34:33,192 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:33,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:33,193 INFO L85 PathProgramCache]: Analyzing trace with hash 736269302, now seen corresponding path program 1 times [2024-11-14 04:34:33,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:33,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692810513] [2024-11-14 04:34:33,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:33,194 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 [2024-11-14 04:34:33,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:33,196 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:33,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:33,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:34:33,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:33,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:33,459 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:33,459 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:33,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692810513] [2024-11-14 04:34:33,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692810513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:33,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:34:33,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:34:33,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585346260] [2024-11-14 04:34:33,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:33,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:34:33,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:33,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:34:33,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:34:33,461 INFO L87 Difference]: Start difference. First operand 228 states and 341 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-14 04:34:33,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:33,499 INFO L93 Difference]: Finished difference Result 594 states and 913 transitions. [2024-11-14 04:34:33,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:34:33,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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 54 [2024-11-14 04:34:33,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:33,502 INFO L225 Difference]: With dead ends: 594 [2024-11-14 04:34:33,502 INFO L226 Difference]: Without dead ends: 396 [2024-11-14 04:34:33,503 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:34:33,504 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 52 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 190 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 [2024-11-14 04:34:33,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 190 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:34:33,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-14 04:34:33,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 390. [2024-11-14 04:34:33,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.5141388174807198) internal successors, (589), 389 states have internal predecessors, (589), 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) [2024-11-14 04:34:33,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 589 transitions. [2024-11-14 04:34:33,529 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 589 transitions. Word has length 54 [2024-11-14 04:34:33,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:33,530 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 589 transitions. [2024-11-14 04:34:33,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-14 04:34:33,530 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 589 transitions. [2024-11-14 04:34:33,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 04:34:33,532 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:33,532 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:33,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:33,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:34:33,734 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:33,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:33,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1485287663, now seen corresponding path program 1 times [2024-11-14 04:34:33,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:33,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138941732] [2024-11-14 04:34:33,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:33,735 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 [2024-11-14 04:34:33,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:33,739 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:33,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:33,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:34:33,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:33,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:33,932 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:33,932 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:33,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138941732] [2024-11-14 04:34:33,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138941732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:33,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:34:33,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:34:33,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880648338] [2024-11-14 04:34:33,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:33,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:34:33,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:33,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:34:33,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:34:33,936 INFO L87 Difference]: Start difference. First operand 390 states and 589 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-14 04:34:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:33,980 INFO L93 Difference]: Finished difference Result 1046 states and 1595 transitions. [2024-11-14 04:34:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:34:33,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2024-11-14 04:34:33,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:33,989 INFO L225 Difference]: With dead ends: 1046 [2024-11-14 04:34:33,989 INFO L226 Difference]: Without dead ends: 686 [2024-11-14 04:34:33,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:34:33,991 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 64 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 233 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 [2024-11-14 04:34:33,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:34:33,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-11-14 04:34:34,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 684. [2024-11-14 04:34:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.5036603221083455) internal successors, (1027), 683 states have internal predecessors, (1027), 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) [2024-11-14 04:34:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1027 transitions. [2024-11-14 04:34:34,045 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1027 transitions. Word has length 55 [2024-11-14 04:34:34,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:34,046 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1027 transitions. [2024-11-14 04:34:34,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-14 04:34:34,046 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1027 transitions. [2024-11-14 04:34:34,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 04:34:34,048 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:34,048 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:34,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:34,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:34:34,249 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:34,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1452509681, now seen corresponding path program 1 times [2024-11-14 04:34:34,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:34,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022439499] [2024-11-14 04:34:34,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:34,250 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 [2024-11-14 04:34:34,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:34,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:34,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:34,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:34:34,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:34,418 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:34,419 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:34,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022439499] [2024-11-14 04:34:34,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022439499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:34,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:34:34,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:34:34,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517634223] [2024-11-14 04:34:34,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:34,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:34:34,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:34,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:34:34,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:34:34,421 INFO L87 Difference]: Start difference. First operand 684 states and 1027 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-14 04:34:34,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:34,464 INFO L93 Difference]: Finished difference Result 1864 states and 2797 transitions. [2024-11-14 04:34:34,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:34:34,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2024-11-14 04:34:34,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:34,470 INFO L225 Difference]: With dead ends: 1864 [2024-11-14 04:34:34,470 INFO L226 Difference]: Without dead ends: 1210 [2024-11-14 04:34:34,471 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:34:34,472 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 68 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 246 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 [2024-11-14 04:34:34,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 246 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:34:34,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2024-11-14 04:34:34,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1208. [2024-11-14 04:34:34,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1207 states have (on average 1.4772162386081193) internal successors, (1783), 1207 states have internal predecessors, (1783), 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) [2024-11-14 04:34:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1783 transitions. [2024-11-14 04:34:34,530 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1783 transitions. Word has length 55 [2024-11-14 04:34:34,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:34,530 INFO L471 AbstractCegarLoop]: Abstraction has 1208 states and 1783 transitions. [2024-11-14 04:34:34,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2024-11-14 04:34:34,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1783 transitions. [2024-11-14 04:34:34,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 04:34:34,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:34,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:34,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-14 04:34:34,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:34:34,732 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:34,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:34,733 INFO L85 PathProgramCache]: Analyzing trace with hash -112011344, now seen corresponding path program 1 times [2024-11-14 04:34:34,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:34,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [858090165] [2024-11-14 04:34:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:34,733 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 [2024-11-14 04:34:34,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:34,736 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:34,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:34,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:34:34,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:34,909 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:34,909 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:34,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [858090165] [2024-11-14 04:34:34,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [858090165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:34,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:34:34,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:34:34,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564669453] [2024-11-14 04:34:34,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:34,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:34:34,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:34,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:34:34,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:34:34,911 INFO L87 Difference]: Start difference. First operand 1208 states and 1783 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-14 04:34:34,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:34,966 INFO L93 Difference]: Finished difference Result 2367 states and 3517 transitions. [2024-11-14 04:34:34,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:34:34,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2024-11-14 04:34:34,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:34,974 INFO L225 Difference]: With dead ends: 2367 [2024-11-14 04:34:34,974 INFO L226 Difference]: Without dead ends: 1708 [2024-11-14 04:34:34,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:34:34,979 INFO L432 NwaCegarLoop]: 174 mSDtfsCounter, 69 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 255 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 [2024-11-14 04:34:34,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 255 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:34:34,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2024-11-14 04:34:35,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1706. [2024-11-14 04:34:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1705 states have (on average 1.4645161290322581) internal successors, (2497), 1705 states have internal predecessors, (2497), 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) [2024-11-14 04:34:35,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2497 transitions. [2024-11-14 04:34:35,059 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2497 transitions. Word has length 56 [2024-11-14 04:34:35,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:35,059 INFO L471 AbstractCegarLoop]: Abstraction has 1706 states and 2497 transitions. [2024-11-14 04:34:35,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2024-11-14 04:34:35,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2497 transitions. [2024-11-14 04:34:35,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-14 04:34:35,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:35,062 INFO L215 NwaCegarLoop]: trace histogram [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, 1] [2024-11-14 04:34:35,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:35,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:34:35,265 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:35,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:35,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1377420220, now seen corresponding path program 1 times [2024-11-14 04:34:35,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:35,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885301356] [2024-11-14 04:34:35,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:35,267 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 [2024-11-14 04:34:35,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:35,271 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:35,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2024-11-14 04:34:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:35,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:34:35,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:35,448 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:35,448 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:35,449 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:35,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885301356] [2024-11-14 04:34:35,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885301356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:35,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:34:35,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:34:35,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575874972] [2024-11-14 04:34:35,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:35,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:34:35,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:35,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:34:35,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:34:35,451 INFO L87 Difference]: Start difference. First operand 1706 states and 2497 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-11-14 04:34:35,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:35,499 INFO L93 Difference]: Finished difference Result 2890 states and 4248 transitions. [2024-11-14 04:34:35,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:34:35,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 78 [2024-11-14 04:34:35,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:35,505 INFO L225 Difference]: With dead ends: 2890 [2024-11-14 04:34:35,506 INFO L226 Difference]: Without dead ends: 1216 [2024-11-14 04:34:35,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:34:35,512 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 57 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 246 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 [2024-11-14 04:34:35,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 246 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:34:35,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2024-11-14 04:34:35,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1214. [2024-11-14 04:34:35,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 1213 states have (on average 1.4550700741962077) internal successors, (1765), 1213 states have internal predecessors, (1765), 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) [2024-11-14 04:34:35,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1765 transitions. [2024-11-14 04:34:35,565 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1765 transitions. Word has length 78 [2024-11-14 04:34:35,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:35,566 INFO L471 AbstractCegarLoop]: Abstraction has 1214 states and 1765 transitions. [2024-11-14 04:34:35,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2024-11-14 04:34:35,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1765 transitions. [2024-11-14 04:34:35,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-14 04:34:35,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:35,572 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:35,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2024-11-14 04:34:35,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:34:35,773 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:35,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:35,773 INFO L85 PathProgramCache]: Analyzing trace with hash -663621508, now seen corresponding path program 1 times [2024-11-14 04:34:35,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:35,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273066721] [2024-11-14 04:34:35,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:35,774 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 [2024-11-14 04:34:35,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:35,775 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:35,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:35,896 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:34:35,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:36,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:37,420 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:37,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273066721] [2024-11-14 04:34:37,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273066721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:37,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1320223978] [2024-11-14 04:34:37,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:37,421 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:34:37,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:34:37,426 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:34:37,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-14 04:34:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:37,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:34:37,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:37,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:37,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1320223978] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 04:34:37,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:34:37,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 8, 4] total 19 [2024-11-14 04:34:37,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451324129] [2024-11-14 04:34:37,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:37,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:34:37,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:37,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:34:37,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-14 04:34:37,914 INFO L87 Difference]: Start difference. First operand 1214 states and 1765 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-11-14 04:34:37,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:37,949 INFO L93 Difference]: Finished difference Result 1794 states and 2615 transitions. [2024-11-14 04:34:37,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:34:37,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2024-11-14 04:34:37,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:37,954 INFO L225 Difference]: With dead ends: 1794 [2024-11-14 04:34:37,954 INFO L226 Difference]: Without dead ends: 640 [2024-11-14 04:34:37,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-14 04:34:37,957 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 49 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 227 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 [2024-11-14 04:34:37,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 227 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:34:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2024-11-14 04:34:37,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 638. [2024-11-14 04:34:37,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 1.4270015698587126) internal successors, (909), 637 states have internal predecessors, (909), 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) [2024-11-14 04:34:37,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 909 transitions. [2024-11-14 04:34:37,999 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 909 transitions. Word has length 79 [2024-11-14 04:34:38,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:38,000 INFO L471 AbstractCegarLoop]: Abstraction has 638 states and 909 transitions. [2024-11-14 04:34:38,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-11-14 04:34:38,000 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 909 transitions. [2024-11-14 04:34:38,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-14 04:34:38,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:38,001 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:38,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2024-11-14 04:34:38,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-14 04:34:38,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:34:38,402 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:38,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:38,403 INFO L85 PathProgramCache]: Analyzing trace with hash 735883259, now seen corresponding path program 1 times [2024-11-14 04:34:38,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:38,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555254999] [2024-11-14 04:34:38,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:38,403 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 [2024-11-14 04:34:38,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:38,407 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:38,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:38,525 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:34:38,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:39,288 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:39,813 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:39,813 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:39,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555254999] [2024-11-14 04:34:39,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555254999] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:39,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1181400824] [2024-11-14 04:34:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:39,814 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:34:39,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:34:39,816 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:34:39,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-14 04:34:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:40,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:34:40,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:40,244 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:40,306 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:40,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1181400824] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-14 04:34:40,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-14 04:34:40,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 8, 4] total 19 [2024-11-14 04:34:40,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290301089] [2024-11-14 04:34:40,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:40,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:34:40,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:40,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:34:40,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-14 04:34:40,308 INFO L87 Difference]: Start difference. First operand 638 states and 909 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-11-14 04:34:40,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:40,334 INFO L93 Difference]: Finished difference Result 930 states and 1331 transitions. [2024-11-14 04:34:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:34:40,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 79 [2024-11-14 04:34:40,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:40,337 INFO L225 Difference]: With dead ends: 930 [2024-11-14 04:34:40,337 INFO L226 Difference]: Without dead ends: 352 [2024-11-14 04:34:40,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2024-11-14 04:34:40,338 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 43 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 208 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 [2024-11-14 04:34:40,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 208 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:34:40,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-14 04:34:40,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 350. [2024-11-14 04:34:40,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 1.3896848137535818) internal successors, (485), 349 states have internal predecessors, (485), 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) [2024-11-14 04:34:40,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 485 transitions. [2024-11-14 04:34:40,354 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 485 transitions. Word has length 79 [2024-11-14 04:34:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:40,354 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 485 transitions. [2024-11-14 04:34:40,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2024-11-14 04:34:40,354 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 485 transitions. [2024-11-14 04:34:40,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-14 04:34:40,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:40,357 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:40,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:40,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-14 04:34:40,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:34:40,757 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:40,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:40,758 INFO L85 PathProgramCache]: Analyzing trace with hash -749140230, now seen corresponding path program 1 times [2024-11-14 04:34:40,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:40,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650813246] [2024-11-14 04:34:40,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:40,759 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 [2024-11-14 04:34:40,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:40,762 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:40,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2024-11-14 04:34:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:40,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:34:40,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:41,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:42,053 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:42,053 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:42,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650813246] [2024-11-14 04:34:42,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650813246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:42,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [779379980] [2024-11-14 04:34:42,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:42,054 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:34:42,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:34:42,056 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:34:42,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-14 04:34:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:42,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:34:42,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:34:42,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:42,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:34:42,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [779379980] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:42,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241924828] [2024-11-14 04:34:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:42,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:34:42,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:34:42,641 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:34:42,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-14 04:34:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:42,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:34:42,758 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:42,889 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:34:42,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:43,185 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:43,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241924828] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:43,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:34:43,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 4, 4, 4, 5] total 21 [2024-11-14 04:34:43,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635146003] [2024-11-14 04:34:43,187 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:34:43,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-14 04:34:43,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:43,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-14 04:34:43,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-14 04:34:43,190 INFO L87 Difference]: Start difference. First operand 350 states and 485 transitions. Second operand has 21 states, 21 states have (on average 15.619047619047619) internal successors, (328), 21 states have internal predecessors, (328), 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) [2024-11-14 04:34:47,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:47,005 INFO L93 Difference]: Finished difference Result 3061 states and 4293 transitions. [2024-11-14 04:34:47,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-14 04:34:47,006 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 15.619047619047619) internal successors, (328), 21 states have internal predecessors, (328), 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 79 [2024-11-14 04:34:47,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:47,016 INFO L225 Difference]: With dead ends: 3061 [2024-11-14 04:34:47,016 INFO L226 Difference]: Without dead ends: 2771 [2024-11-14 04:34:47,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1121, Invalid=4135, Unknown=0, NotChecked=0, Total=5256 [2024-11-14 04:34:47,021 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 2560 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2560 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:47,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2560 Valid, 1248 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-14 04:34:47,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2771 states. [2024-11-14 04:34:47,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2771 to 2255. [2024-11-14 04:34:47,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2254 states have (on average 1.383318544809228) internal successors, (3118), 2254 states have internal predecessors, (3118), 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) [2024-11-14 04:34:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3118 transitions. [2024-11-14 04:34:47,132 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3118 transitions. Word has length 79 [2024-11-14 04:34:47,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:47,132 INFO L471 AbstractCegarLoop]: Abstraction has 2255 states and 3118 transitions. [2024-11-14 04:34:47,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 15.619047619047619) internal successors, (328), 21 states have internal predecessors, (328), 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) [2024-11-14 04:34:47,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3118 transitions. [2024-11-14 04:34:47,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-14 04:34:47,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:47,134 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:47,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2024-11-14 04:34:47,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-14 04:34:47,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2024-11-14 04:34:47,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:34:47,736 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:47,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:47,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1346752506, now seen corresponding path program 1 times [2024-11-14 04:34:47,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:47,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1544269802] [2024-11-14 04:34:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:47,737 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 [2024-11-14 04:34:47,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:47,738 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:47,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:47,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:34:47,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:48,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:49,045 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:49,045 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1544269802] [2024-11-14 04:34:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1544269802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [925157734] [2024-11-14 04:34:49,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:49,045 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:34:49,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:34:49,050 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:34:49,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-14 04:34:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:49,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:34:49,272 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:49,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 04:34:49,934 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:49,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [925157734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:49,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:34:49,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 8] total 20 [2024-11-14 04:34:49,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984970775] [2024-11-14 04:34:49,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:49,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:34:49,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:49,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:34:49,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:34:49,935 INFO L87 Difference]: Start difference. First operand 2255 states and 3118 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-11-14 04:34:50,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:50,170 INFO L93 Difference]: Finished difference Result 6574 states and 9178 transitions. [2024-11-14 04:34:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:34:50,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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 80 [2024-11-14 04:34:50,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:50,188 INFO L225 Difference]: With dead ends: 6574 [2024-11-14 04:34:50,188 INFO L226 Difference]: Without dead ends: 5418 [2024-11-14 04:34:50,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:34:50,191 INFO L432 NwaCegarLoop]: 196 mSDtfsCounter, 324 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:50,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 611 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:34:50,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2024-11-14 04:34:50,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 3225. [2024-11-14 04:34:50,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3225 states, 3224 states have (on average 1.3771712158808933) internal successors, (4440), 3224 states have internal predecessors, (4440), 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) [2024-11-14 04:34:50,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3225 states to 3225 states and 4440 transitions. [2024-11-14 04:34:50,343 INFO L78 Accepts]: Start accepts. Automaton has 3225 states and 4440 transitions. Word has length 80 [2024-11-14 04:34:50,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:50,344 INFO L471 AbstractCegarLoop]: Abstraction has 3225 states and 4440 transitions. [2024-11-14 04:34:50,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-11-14 04:34:50,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3225 states and 4440 transitions. [2024-11-14 04:34:50,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-14 04:34:50,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:50,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:50,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2024-11-14 04:34:50,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 [2024-11-14 04:34:50,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:34:50,747 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:50,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:50,747 INFO L85 PathProgramCache]: Analyzing trace with hash -628906670, now seen corresponding path program 1 times [2024-11-14 04:34:50,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:50,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678644304] [2024-11-14 04:34:50,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:50,748 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 [2024-11-14 04:34:50,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:50,749 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:50,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2024-11-14 04:34:50,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:50,845 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:34:50,846 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:51,512 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:51,789 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:51,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1678644304] [2024-11-14 04:34:51,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1678644304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:51,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1839423103] [2024-11-14 04:34:51,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:51,790 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:34:51,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:34:51,792 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:34:51,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-14 04:34:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:52,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:34:52,008 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:52,526 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 04:34:52,526 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:52,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1839423103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:52,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:34:52,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 20 [2024-11-14 04:34:52,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125079326] [2024-11-14 04:34:52,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:52,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:34:52,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:52,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:34:52,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:34:52,528 INFO L87 Difference]: Start difference. First operand 3225 states and 4440 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-11-14 04:34:52,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:52,766 INFO L93 Difference]: Finished difference Result 7544 states and 10500 transitions. [2024-11-14 04:34:52,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:34:52,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 81 [2024-11-14 04:34:52,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:52,779 INFO L225 Difference]: With dead ends: 7544 [2024-11-14 04:34:52,780 INFO L226 Difference]: Without dead ends: 6388 [2024-11-14 04:34:52,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:34:52,783 INFO L432 NwaCegarLoop]: 194 mSDtfsCounter, 317 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:52,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 573 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:34:52,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6388 states. [2024-11-14 04:34:52,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6388 to 4188. [2024-11-14 04:34:52,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4188 states, 4187 states have (on average 1.3735371387628375) internal successors, (5751), 4187 states have internal predecessors, (5751), 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) [2024-11-14 04:34:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4188 states to 4188 states and 5751 transitions. [2024-11-14 04:34:52,974 INFO L78 Accepts]: Start accepts. Automaton has 4188 states and 5751 transitions. Word has length 81 [2024-11-14 04:34:52,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:52,974 INFO L471 AbstractCegarLoop]: Abstraction has 4188 states and 5751 transitions. [2024-11-14 04:34:52,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-11-14 04:34:52,975 INFO L276 IsEmpty]: Start isEmpty. Operand 4188 states and 5751 transitions. [2024-11-14 04:34:52,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-14 04:34:52,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:52,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:52,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Ended with exit code 0 [2024-11-14 04:34:53,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2024-11-14 04:34:53,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:34:53,377 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:53,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:53,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1486438676, now seen corresponding path program 1 times [2024-11-14 04:34:53,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:53,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565312984] [2024-11-14 04:34:53,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:53,378 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 [2024-11-14 04:34:53,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:53,380 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:53,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Waiting until timeout for monitored process [2024-11-14 04:34:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:53,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:34:53,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:54,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:54,405 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:54,405 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:54,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565312984] [2024-11-14 04:34:54,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565312984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:54,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1569169121] [2024-11-14 04:34:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:54,406 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:34:54,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:34:54,408 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:34:54,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-11-14 04:34:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:54,573 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:34:54,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:54,630 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:54,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1569169121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:54,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:34:54,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 8] total 17 [2024-11-14 04:34:54,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996964454] [2024-11-14 04:34:54,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:54,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:34:54,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:54,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:34:54,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-14 04:34:54,631 INFO L87 Difference]: Start difference. First operand 4188 states and 5751 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-11-14 04:34:54,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:54,726 INFO L93 Difference]: Finished difference Result 10032 states and 13726 transitions. [2024-11-14 04:34:54,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:34:54,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2024-11-14 04:34:54,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:54,743 INFO L225 Difference]: With dead ends: 10032 [2024-11-14 04:34:54,743 INFO L226 Difference]: Without dead ends: 6096 [2024-11-14 04:34:54,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-14 04:34:54,750 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 51 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 263 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 [2024-11-14 04:34:54,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 263 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:34:54,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6096 states. [2024-11-14 04:34:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6096 to 6069. [2024-11-14 04:34:55,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6069 states, 6068 states have (on average 1.3459129861568886) internal successors, (8167), 6068 states have internal predecessors, (8167), 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) [2024-11-14 04:34:55,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 8167 transitions. [2024-11-14 04:34:55,017 INFO L78 Accepts]: Start accepts. Automaton has 6069 states and 8167 transitions. Word has length 81 [2024-11-14 04:34:55,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:55,018 INFO L471 AbstractCegarLoop]: Abstraction has 6069 states and 8167 transitions. [2024-11-14 04:34:55,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-11-14 04:34:55,018 INFO L276 IsEmpty]: Start isEmpty. Operand 6069 states and 8167 transitions. [2024-11-14 04:34:55,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-14 04:34:55,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:55,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:55,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2024-11-14 04:34:55,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Forceful destruction successful, exit code 0 [2024-11-14 04:34:55,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:34:55,421 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:55,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:55,422 INFO L85 PathProgramCache]: Analyzing trace with hash -603604336, now seen corresponding path program 1 times [2024-11-14 04:34:55,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:55,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550066595] [2024-11-14 04:34:55,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:55,422 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 [2024-11-14 04:34:55,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:55,425 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:55,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Waiting until timeout for monitored process [2024-11-14 04:34:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:55,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:34:55,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:56,260 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:56,260 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:34:56,648 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:56,648 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:56,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550066595] [2024-11-14 04:34:56,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550066595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:34:56,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1122260340] [2024-11-14 04:34:56,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:56,648 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:34:56,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:34:56,652 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:34:56,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-14 04:34:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:56,912 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:34:56,915 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:57,456 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 04:34:57,457 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:57,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1122260340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:57,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:34:57,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 8] total 20 [2024-11-14 04:34:57,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054539305] [2024-11-14 04:34:57,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:57,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:34:57,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:57,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:34:57,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:34:57,459 INFO L87 Difference]: Start difference. First operand 6069 states and 8167 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-11-14 04:34:57,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:57,751 INFO L93 Difference]: Finished difference Result 12306 states and 16751 transitions. [2024-11-14 04:34:57,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:34:57,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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 81 [2024-11-14 04:34:57,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:57,775 INFO L225 Difference]: With dead ends: 12306 [2024-11-14 04:34:57,775 INFO L226 Difference]: Without dead ends: 10639 [2024-11-14 04:34:57,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:34:57,779 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 280 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:34:57,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 677 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:34:57,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10639 states. [2024-11-14 04:34:58,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10639 to 7479. [2024-11-14 04:34:58,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7479 states, 7478 states have (on average 1.3435410537576893) internal successors, (10047), 7478 states have internal predecessors, (10047), 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) [2024-11-14 04:34:58,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7479 states to 7479 states and 10047 transitions. [2024-11-14 04:34:58,061 INFO L78 Accepts]: Start accepts. Automaton has 7479 states and 10047 transitions. Word has length 81 [2024-11-14 04:34:58,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:58,062 INFO L471 AbstractCegarLoop]: Abstraction has 7479 states and 10047 transitions. [2024-11-14 04:34:58,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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) [2024-11-14 04:34:58,062 INFO L276 IsEmpty]: Start isEmpty. Operand 7479 states and 10047 transitions. [2024-11-14 04:34:58,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-14 04:34:58,063 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:58,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:58,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Ended with exit code 0 [2024-11-14 04:34:58,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-14 04:34:58,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:34:58,464 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:58,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:58,465 INFO L85 PathProgramCache]: Analyzing trace with hash -664163822, now seen corresponding path program 1 times [2024-11-14 04:34:58,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:58,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602367155] [2024-11-14 04:34:58,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:58,465 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 [2024-11-14 04:34:58,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:58,467 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:58,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2024-11-14 04:34:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:58,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:34:58,570 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:34:58,603 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:34:58,603 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:34:58,603 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:34:58,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602367155] [2024-11-14 04:34:58,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602367155] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:34:58,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:34:58,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:34:58,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740623765] [2024-11-14 04:34:58,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:34:58,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:34:58,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:34:58,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:34:58,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:34:58,605 INFO L87 Difference]: Start difference. First operand 7479 states and 10047 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-11-14 04:34:59,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:34:59,019 INFO L93 Difference]: Finished difference Result 20490 states and 27384 transitions. [2024-11-14 04:34:59,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:34:59,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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 81 [2024-11-14 04:34:59,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:34:59,047 INFO L225 Difference]: With dead ends: 20490 [2024-11-14 04:34:59,048 INFO L226 Difference]: Without dead ends: 13217 [2024-11-14 04:34:59,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:34:59,053 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 54 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 218 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 [2024-11-14 04:34:59,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 218 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:34:59,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13217 states. [2024-11-14 04:34:59,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13217 to 13215. [2024-11-14 04:34:59,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13215 states, 13214 states have (on average 1.3154230361737551) internal successors, (17382), 13214 states have internal predecessors, (17382), 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) [2024-11-14 04:34:59,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13215 states to 13215 states and 17382 transitions. [2024-11-14 04:34:59,547 INFO L78 Accepts]: Start accepts. Automaton has 13215 states and 17382 transitions. Word has length 81 [2024-11-14 04:34:59,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:34:59,547 INFO L471 AbstractCegarLoop]: Abstraction has 13215 states and 17382 transitions. [2024-11-14 04:34:59,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 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) [2024-11-14 04:34:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 13215 states and 17382 transitions. [2024-11-14 04:34:59,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-14 04:34:59,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:34:59,551 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:34:59,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2024-11-14 04:34:59,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-14 04:34:59,752 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:34:59,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:34:59,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1858796100, now seen corresponding path program 1 times [2024-11-14 04:34:59,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:34:59,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836322228] [2024-11-14 04:34:59,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:34:59,753 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 [2024-11-14 04:34:59,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:34:59,755 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:34:59,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2024-11-14 04:34:59,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:34:59,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:34:59,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:35:00,659 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:00,660 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:35:00,922 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:00,922 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:35:00,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836322228] [2024-11-14 04:35:00,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836322228] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:35:00,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [57109244] [2024-11-14 04:35:00,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:35:00,922 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:35:00,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:35:00,924 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:35:00,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-14 04:35:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:35:01,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-14 04:35:01,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:35:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 04:35:01,680 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:35:01,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [57109244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:35:01,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-14 04:35:01,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 20 [2024-11-14 04:35:01,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623860175] [2024-11-14 04:35:01,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:35:01,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 04:35:01,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:35:01,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 04:35:01,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:35:01,682 INFO L87 Difference]: Start difference. First operand 13215 states and 17382 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-11-14 04:35:02,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:35:02,103 INFO L93 Difference]: Finished difference Result 22769 states and 30254 transitions. [2024-11-14 04:35:02,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 04:35:02,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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 82 [2024-11-14 04:35:02,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:35:02,133 INFO L225 Difference]: With dead ends: 22769 [2024-11-14 04:35:02,133 INFO L226 Difference]: Without dead ends: 19971 [2024-11-14 04:35:02,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:35:02,139 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 316 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 608 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:35:02,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 608 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:35:02,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19971 states. [2024-11-14 04:35:02,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19971 to 15455. [2024-11-14 04:35:02,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15455 states, 15454 states have (on average 1.3128639834347096) internal successors, (20289), 15454 states have internal predecessors, (20289), 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) [2024-11-14 04:35:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15455 states to 15455 states and 20289 transitions. [2024-11-14 04:35:02,753 INFO L78 Accepts]: Start accepts. Automaton has 15455 states and 20289 transitions. Word has length 82 [2024-11-14 04:35:02,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:35:02,753 INFO L471 AbstractCegarLoop]: Abstraction has 15455 states and 20289 transitions. [2024-11-14 04:35:02,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 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) [2024-11-14 04:35:02,754 INFO L276 IsEmpty]: Start isEmpty. Operand 15455 states and 20289 transitions. [2024-11-14 04:35:02,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-14 04:35:02,756 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:35:02,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:35:02,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2024-11-14 04:35:02,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2024-11-14 04:35:03,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:35:03,157 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:35:03,157 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:35:03,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1429282586, now seen corresponding path program 1 times [2024-11-14 04:35:03,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:35:03,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443782236] [2024-11-14 04:35:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:35:03,158 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 [2024-11-14 04:35:03,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:35:03,160 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:35:03,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2024-11-14 04:35:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:35:03,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:35:03,271 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:35:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:03,847 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:35:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:04,231 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:35:04,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443782236] [2024-11-14 04:35:04,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443782236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:35:04,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [882420149] [2024-11-14 04:35:04,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:35:04,232 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:35:04,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:35:04,234 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:35:04,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-14 04:35:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:35:04,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:35:04,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:35:05,363 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:05,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:35:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:05,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [882420149] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:35:05,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926083342] [2024-11-14 04:35:05,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:35:05,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:35:05,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:35:05,747 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:35:05,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-14 04:35:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:35:05,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 04:35:05,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:35:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:07,129 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:35:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:07,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926083342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:35:07,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:35:07,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8, 8, 10, 8] total 37 [2024-11-14 04:35:07,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922576425] [2024-11-14 04:35:07,446 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:35:07,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 04:35:07,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:35:07,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 04:35:07,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1176, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 04:35:07,448 INFO L87 Difference]: Start difference. First operand 15455 states and 20289 transitions. Second operand has 37 states, 37 states have (on average 8.91891891891892) internal successors, (330), 37 states have internal predecessors, (330), 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) [2024-11-14 04:35:17,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:35:17,022 INFO L93 Difference]: Finished difference Result 83152 states and 111048 transitions. [2024-11-14 04:35:17,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-14 04:35:17,022 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 8.91891891891892) internal successors, (330), 37 states have internal predecessors, (330), 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 83 [2024-11-14 04:35:17,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:35:17,145 INFO L225 Difference]: With dead ends: 83152 [2024-11-14 04:35:17,145 INFO L226 Difference]: Without dead ends: 68097 [2024-11-14 04:35:17,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4653 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2672, Invalid=11848, Unknown=0, NotChecked=0, Total=14520 [2024-11-14 04:35:17,165 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 4205 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4205 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 2023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:35:17,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4205 Valid, 2359 Invalid, 2023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-14 04:35:17,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68097 states. [2024-11-14 04:35:19,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68097 to 48195. [2024-11-14 04:35:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48195 states, 48194 states have (on average 1.2960949495787857) internal successors, (62464), 48194 states have internal predecessors, (62464), 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) [2024-11-14 04:35:19,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48195 states to 48195 states and 62464 transitions. [2024-11-14 04:35:19,297 INFO L78 Accepts]: Start accepts. Automaton has 48195 states and 62464 transitions. Word has length 83 [2024-11-14 04:35:19,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:35:19,298 INFO L471 AbstractCegarLoop]: Abstraction has 48195 states and 62464 transitions. [2024-11-14 04:35:19,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 8.91891891891892) internal successors, (330), 37 states have internal predecessors, (330), 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) [2024-11-14 04:35:19,298 INFO L276 IsEmpty]: Start isEmpty. Operand 48195 states and 62464 transitions. [2024-11-14 04:35:19,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-14 04:35:19,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:35:19,302 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:35:19,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2024-11-14 04:35:19,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2024-11-14 04:35:19,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-14 04:35:19,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:35:19,904 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:35:19,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:35:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1436406300, now seen corresponding path program 1 times [2024-11-14 04:35:19,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:35:19,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293307473] [2024-11-14 04:35:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:35:19,905 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 [2024-11-14 04:35:19,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:35:19,906 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:35:19,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2024-11-14 04:35:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:35:20,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:35:20,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:35:20,883 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:20,883 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:35:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:21,223 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:35:21,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293307473] [2024-11-14 04:35:21,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293307473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:35:21,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1307555386] [2024-11-14 04:35:21,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:35:21,223 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:35:21,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:35:21,225 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:35:21,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-14 04:35:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:35:21,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:35:21,495 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:35:22,625 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:22,625 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:35:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:23,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1307555386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:35:23,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710868845] [2024-11-14 04:35:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:35:23,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:35:23,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:35:23,197 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:35:23,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-14 04:35:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:35:23,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-14 04:35:23,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:35:24,729 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:24,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:35:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:25,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710868845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:35:25,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:35:25,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8, 8, 10, 9] total 37 [2024-11-14 04:35:25,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917905259] [2024-11-14 04:35:25,034 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:35:25,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-14 04:35:25,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:35:25,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-14 04:35:25,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2024-11-14 04:35:25,037 INFO L87 Difference]: Start difference. First operand 48195 states and 62464 transitions. Second operand has 37 states, 37 states have (on average 10.08108108108108) internal successors, (373), 37 states have internal predecessors, (373), 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) [2024-11-14 04:35:41,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:35:41,766 INFO L93 Difference]: Finished difference Result 245456 states and 319284 transitions. [2024-11-14 04:35:41,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-11-14 04:35:41,767 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 10.08108108108108) internal successors, (373), 37 states have internal predecessors, (373), 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 84 [2024-11-14 04:35:41,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:35:42,152 INFO L225 Difference]: With dead ends: 245456 [2024-11-14 04:35:42,152 INFO L226 Difference]: Without dead ends: 197409 [2024-11-14 04:35:42,227 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 463 SyntacticMatches, 1 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6777 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=3100, Invalid=16922, Unknown=0, NotChecked=0, Total=20022 [2024-11-14 04:35:42,228 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 6430 mSDsluCounter, 2000 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6430 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-14 04:35:42,228 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6430 Valid, 2128 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2245 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-14 04:35:42,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197409 states. [2024-11-14 04:35:48,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197409 to 123486. [2024-11-14 04:35:48,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123486 states, 123485 states have (on average 1.2947969388994616) internal successors, (159888), 123485 states have internal predecessors, (159888), 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) [2024-11-14 04:35:48,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123486 states to 123486 states and 159888 transitions. [2024-11-14 04:35:48,682 INFO L78 Accepts]: Start accepts. Automaton has 123486 states and 159888 transitions. Word has length 84 [2024-11-14 04:35:48,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:35:48,682 INFO L471 AbstractCegarLoop]: Abstraction has 123486 states and 159888 transitions. [2024-11-14 04:35:48,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 10.08108108108108) internal successors, (373), 37 states have internal predecessors, (373), 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) [2024-11-14 04:35:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 123486 states and 159888 transitions. [2024-11-14 04:35:48,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-14 04:35:48,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:35:48,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:35:48,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Ended with exit code 0 [2024-11-14 04:35:48,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-14 04:35:49,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-14 04:35:49,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:35:49,288 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:35:49,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:35:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1647576058, now seen corresponding path program 1 times [2024-11-14 04:35:49,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:35:49,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56792706] [2024-11-14 04:35:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:35:49,289 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 [2024-11-14 04:35:49,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:35:49,291 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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) [2024-11-14 04:35:49,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/mathsat -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)] Waiting until timeout for monitored process [2024-11-14 04:35:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:35:49,405 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:35:49,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:35:50,301 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:50,301 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:35:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:50,614 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:35:50,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56792706] [2024-11-14 04:35:50,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56792706] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:35:50,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [854790636] [2024-11-14 04:35:50,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:35:50,615 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:35:50,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:35:50,616 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:35:50,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3bbf184-4a5a-4e1b-80e3-985a0fcc87a2/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-14 04:35:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:35:50,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 04:35:50,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:35:53,517 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:35:53,517 INFO L311 TraceCheckSpWp]: Computing backward predicates...