./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.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_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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_8692bb69-76ff-4595-825c-614be521aab7/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 561889d92df45f99e756a59f568aff549bcbf1af3442520c3f6faf4dbc996ed6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:31:57,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:31:57,402 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 04:31:57,408 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:31:57,408 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:31:57,435 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:31:57,437 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:31:57,437 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:31:57,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:31:57,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:31:57,437 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:31:57,438 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:31:57,438 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:31:57,438 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 04:31:57,438 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:31:57,438 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:31:57,438 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 04:31:57,438 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 04:31:57,438 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:31:57,438 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 04:31:57,438 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 04:31:57,439 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 04:31:57,441 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:31:57,442 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:31:57,442 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:31:57,442 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 04:31:57,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:31:57,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:31:57,443 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:31:57,443 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:31:57,443 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:31:57,443 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:31:57,443 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:31:57,443 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:31:57,444 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:31:57,444 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:31:57,444 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:31:57,445 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:31:57,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:31:57,445 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:31:57,445 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:31:57,445 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:31:57,445 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 04:31:57,445 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 04:31:57,445 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:31:57,445 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:31:57,446 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 04:31:57,446 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_8692bb69-76ff-4595-825c-614be521aab7/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 -> 561889d92df45f99e756a59f568aff549bcbf1af3442520c3f6faf4dbc996ed6 [2024-11-14 04:31:57,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:31:57,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:31:57,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:31:57,796 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:31:57,796 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:31:57,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c Unable to find full path for "g++" [2024-11-14 04:31:59,655 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:32:00,042 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:32:00,046 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-11-14 04:32:00,067 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/data/cd48415a1/51919a1e2b6b4b44bee742158ddcb314/FLAGf433a4f2f [2024-11-14 04:32:00,089 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/data/cd48415a1/51919a1e2b6b4b44bee742158ddcb314 [2024-11-14 04:32:00,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:32:00,093 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:32:00,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:32:00,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:32:00,100 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:32:00,101 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:32:00" (1/1) ... [2024-11-14 04:32:00,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4146458 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:00, skipping insertion in model container [2024-11-14 04:32:00,102 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:32:00" (1/1) ... [2024-11-14 04:32:00,131 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:32:00,433 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_8692bb69-76ff-4595-825c-614be521aab7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7180,7193] [2024-11-14 04:32:00,460 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_8692bb69-76ff-4595-825c-614be521aab7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9491,9504] [2024-11-14 04:32:00,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:32:00,500 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:32:00,587 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_8692bb69-76ff-4595-825c-614be521aab7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7180,7193] [2024-11-14 04:32:00,608 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_8692bb69-76ff-4595-825c-614be521aab7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9491,9504] [2024-11-14 04:32:00,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:32:00,651 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:32:00,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:00 WrapperNode [2024-11-14 04:32:00,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:32:00,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:32:00,654 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:32:00,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:32:00,662 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:00" (1/1) ... [2024-11-14 04:32:00,674 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:00" (1/1) ... [2024-11-14 04:32:00,728 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 505 [2024-11-14 04:32:00,732 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:32:00,733 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:32:00,733 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:32:00,733 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:32:00,740 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:00" (1/1) ... [2024-11-14 04:32:00,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:00" (1/1) ... [2024-11-14 04:32:00,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:00" (1/1) ... [2024-11-14 04:32:00,744 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:00" (1/1) ... [2024-11-14 04:32:00,758 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:00" (1/1) ... [2024-11-14 04:32:00,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:00" (1/1) ... [2024-11-14 04:32:00,771 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:00" (1/1) ... [2024-11-14 04:32:00,772 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:00" (1/1) ... [2024-11-14 04:32:00,779 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:32:00,783 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:32:00,784 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:32:00,784 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:32:00,785 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:00" (1/1) ... [2024-11-14 04:32:00,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:32:00,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:32:00,830 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:32:00,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:32:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:32:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 04:32:00,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:32:00,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:32:01,027 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:32:01,031 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:32:01,659 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2024-11-14 04:32:01,660 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:32:01,826 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:32:01,827 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:32:01,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:32:01 BoogieIcfgContainer [2024-11-14 04:32:01,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:32:01,831 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:32:01,831 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:32:01,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:32:01,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:32:00" (1/3) ... [2024-11-14 04:32:01,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ffad9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:32:01, skipping insertion in model container [2024-11-14 04:32:01,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:32:00" (2/3) ... [2024-11-14 04:32:01,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ffad9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:32:01, skipping insertion in model container [2024-11-14 04:32:01,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:32:01" (3/3) ... [2024-11-14 04:32:01,853 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-11-14 04:32:01,869 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:32:01,871 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c that has 1 procedures, 79 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-14 04:32:01,940 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:32:01,957 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;@334de05a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:32:01,958 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 04:32:01,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 76 states have (on average 1.763157894736842) internal successors, (134), 78 states have internal predecessors, (134), 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 04:32:01,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 04:32:01,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:01,971 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:01,972 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:01,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:01,978 INFO L85 PathProgramCache]: Analyzing trace with hash 679063752, now seen corresponding path program 1 times [2024-11-14 04:32:01,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:01,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118753931] [2024-11-14 04:32:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:01,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:02,585 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 04:32:02,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:02,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118753931] [2024-11-14 04:32:02,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118753931] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:02,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:02,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:32:02,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111758260] [2024-11-14 04:32:02,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:02,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:32:02,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:02,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:32:02,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:32:02,618 INFO L87 Difference]: Start difference. First operand has 79 states, 76 states have (on average 1.763157894736842) internal successors, (134), 78 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:32:02,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:02,847 INFO L93 Difference]: Finished difference Result 140 states and 227 transitions. [2024-11-14 04:32:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:32:02,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-14 04:32:02,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:02,856 INFO L225 Difference]: With dead ends: 140 [2024-11-14 04:32:02,857 INFO L226 Difference]: Without dead ends: 77 [2024-11-14 04:32:02,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:32:02,862 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 356 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:02,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 91 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:32:02,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-14 04:32:02,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-14 04:32:02,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.2133333333333334) internal successors, (91), 76 states have internal predecessors, (91), 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 04:32:02,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2024-11-14 04:32:02,896 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 41 [2024-11-14 04:32:02,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:02,896 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2024-11-14 04:32:02,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:32:02,897 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2024-11-14 04:32:02,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-14 04:32:02,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:02,898 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:02,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 04:32:02,898 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:02,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:02,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1098546236, now seen corresponding path program 1 times [2024-11-14 04:32:02,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:02,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137243521] [2024-11-14 04:32:02,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:02,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:03,199 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 04:32:03,199 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:03,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137243521] [2024-11-14 04:32:03,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137243521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:03,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:03,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:32:03,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706988843] [2024-11-14 04:32:03,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:03,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:32:03,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:03,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:32:03,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:32:03,202 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:32:03,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:03,348 INFO L93 Difference]: Finished difference Result 124 states and 150 transitions. [2024-11-14 04:32:03,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:32:03,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2024-11-14 04:32:03,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:03,349 INFO L225 Difference]: With dead ends: 124 [2024-11-14 04:32:03,351 INFO L226 Difference]: Without dead ends: 77 [2024-11-14 04:32:03,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:32:03,352 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 216 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:03,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 71 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:32:03,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-14 04:32:03,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-14 04:32:03,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 76 states have internal predecessors, (89), 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 04:32:03,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2024-11-14 04:32:03,366 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 42 [2024-11-14 04:32:03,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:03,366 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2024-11-14 04:32:03,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:32:03,366 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2024-11-14 04:32:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-14 04:32:03,367 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:03,367 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:03,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 04:32:03,368 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:03,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:03,370 INFO L85 PathProgramCache]: Analyzing trace with hash 2057428040, now seen corresponding path program 1 times [2024-11-14 04:32:03,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:03,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562273770] [2024-11-14 04:32:03,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:03,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:03,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:03,639 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 04:32:03,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:03,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562273770] [2024-11-14 04:32:03,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562273770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:03,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:03,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:32:03,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683997358] [2024-11-14 04:32:03,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:03,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:32:03,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:03,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:32:03,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:32:03,642 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:32:03,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:03,767 INFO L93 Difference]: Finished difference Result 128 states and 151 transitions. [2024-11-14 04:32:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:32:03,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-14 04:32:03,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:03,769 INFO L225 Difference]: With dead ends: 128 [2024-11-14 04:32:03,769 INFO L226 Difference]: Without dead ends: 77 [2024-11-14 04:32:03,769 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:32:03,770 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 221 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 63 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 04:32:03,770 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 63 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:32:03,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-14 04:32:03,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-14 04:32:03,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.16) internal successors, (87), 76 states have internal predecessors, (87), 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 04:32:03,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2024-11-14 04:32:03,779 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 43 [2024-11-14 04:32:03,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:03,780 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2024-11-14 04:32:03,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:32:03,780 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2024-11-14 04:32:03,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-14 04:32:03,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:03,781 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:03,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 04:32:03,781 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:03,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:03,782 INFO L85 PathProgramCache]: Analyzing trace with hash -620193096, now seen corresponding path program 1 times [2024-11-14 04:32:03,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:03,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823951436] [2024-11-14 04:32:03,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:03,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:07,106 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 04:32:07,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:07,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823951436] [2024-11-14 04:32:07,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823951436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:07,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:07,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-14 04:32:07,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552300835] [2024-11-14 04:32:07,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:07,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-14 04:32:07,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:07,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-14 04:32:07,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2024-11-14 04:32:07,109 INFO L87 Difference]: Start difference. First operand 77 states and 87 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:32:09,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:09,632 INFO L93 Difference]: Finished difference Result 193 states and 239 transitions. [2024-11-14 04:32:09,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 04:32:09,633 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-14 04:32:09,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:09,635 INFO L225 Difference]: With dead ends: 193 [2024-11-14 04:32:09,635 INFO L226 Difference]: Without dead ends: 164 [2024-11-14 04:32:09,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=304, Invalid=818, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 04:32:09,637 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 300 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:09,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 745 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-14 04:32:09,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2024-11-14 04:32:09,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 104. [2024-11-14 04:32:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 102 states have (on average 1.196078431372549) internal successors, (122), 103 states have internal predecessors, (122), 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 04:32:09,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 122 transitions. [2024-11-14 04:32:09,648 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 122 transitions. Word has length 44 [2024-11-14 04:32:09,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:09,648 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 122 transitions. [2024-11-14 04:32:09,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:32:09,649 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 122 transitions. [2024-11-14 04:32:09,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 04:32:09,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:09,650 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:09,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 04:32:09,651 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:09,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:09,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2074197087, now seen corresponding path program 1 times [2024-11-14 04:32:09,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:09,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542387122] [2024-11-14 04:32:09,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:09,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:14,482 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 04:32:14,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:14,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542387122] [2024-11-14 04:32:14,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542387122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:14,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:14,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2024-11-14 04:32:14,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434461816] [2024-11-14 04:32:14,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:14,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-14 04:32:14,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:14,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-14 04:32:14,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2024-11-14 04:32:14,488 INFO L87 Difference]: Start difference. First operand 104 states and 122 transitions. Second operand has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:32:18,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:18,449 INFO L93 Difference]: Finished difference Result 218 states and 271 transitions. [2024-11-14 04:32:18,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-14 04:32:18,450 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-14 04:32:18,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:18,451 INFO L225 Difference]: With dead ends: 218 [2024-11-14 04:32:18,451 INFO L226 Difference]: Without dead ends: 159 [2024-11-14 04:32:18,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=544, Invalid=1436, Unknown=0, NotChecked=0, Total=1980 [2024-11-14 04:32:18,453 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 369 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:18,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 488 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-14 04:32:18,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-14 04:32:18,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 155. [2024-11-14 04:32:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.2402597402597402) internal successors, (191), 154 states have internal predecessors, (191), 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 04:32:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 191 transitions. [2024-11-14 04:32:18,473 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 191 transitions. Word has length 45 [2024-11-14 04:32:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:18,473 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 191 transitions. [2024-11-14 04:32:18,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.8) internal successors, (45), 24 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:32:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 191 transitions. [2024-11-14 04:32:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-14 04:32:18,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:18,475 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, 1, 1] [2024-11-14 04:32:18,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 04:32:18,480 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:18,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:18,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1728234889, now seen corresponding path program 1 times [2024-11-14 04:32:18,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:18,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265790458] [2024-11-14 04:32:18,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:18,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:18,637 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 04:32:18,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:18,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265790458] [2024-11-14 04:32:18,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265790458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:18,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:18,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:32:18,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574858978] [2024-11-14 04:32:18,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:18,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:32:18,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:18,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:32:18,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:32:18,642 INFO L87 Difference]: Start difference. First operand 155 states and 191 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 04:32:18,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:18,683 INFO L93 Difference]: Finished difference Result 258 states and 326 transitions. [2024-11-14 04:32:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:32:18,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2024-11-14 04:32:18,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:18,685 INFO L225 Difference]: With dead ends: 258 [2024-11-14 04:32:18,685 INFO L226 Difference]: Without dead ends: 202 [2024-11-14 04:32:18,685 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 04:32:18,686 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 34 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:18,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 165 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:32:18,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-14 04:32:18,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 188. [2024-11-14 04:32:18,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.2459893048128343) internal successors, (233), 187 states have internal predecessors, (233), 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 04:32:18,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 233 transitions. [2024-11-14 04:32:18,702 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 233 transitions. Word has length 58 [2024-11-14 04:32:18,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:18,703 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 233 transitions. [2024-11-14 04:32:18,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 04:32:18,703 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 233 transitions. [2024-11-14 04:32:18,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-14 04:32:18,704 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:18,704 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, 1, 1, 1, 1, 1] [2024-11-14 04:32:18,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 04:32:18,705 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:18,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:18,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1064711645, now seen corresponding path program 1 times [2024-11-14 04:32:18,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:18,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14614639] [2024-11-14 04:32:18,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:18,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:18,868 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 04:32:18,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:18,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14614639] [2024-11-14 04:32:18,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14614639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:18,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:18,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:32:18,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386046124] [2024-11-14 04:32:18,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:18,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:32:18,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:18,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:32:18,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:32:18,870 INFO L87 Difference]: Start difference. First operand 188 states and 233 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 04:32:18,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:18,909 INFO L93 Difference]: Finished difference Result 448 states and 576 transitions. [2024-11-14 04:32:18,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:32:18,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2024-11-14 04:32:18,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:18,911 INFO L225 Difference]: With dead ends: 448 [2024-11-14 04:32:18,911 INFO L226 Difference]: Without dead ends: 308 [2024-11-14 04:32:18,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 04:32:18,915 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 29 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:18,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 158 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:32:18,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2024-11-14 04:32:18,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 286. [2024-11-14 04:32:18,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.263157894736842) internal successors, (360), 285 states have internal predecessors, (360), 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 04:32:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 360 transitions. [2024-11-14 04:32:18,940 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 360 transitions. Word has length 61 [2024-11-14 04:32:18,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:18,943 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 360 transitions. [2024-11-14 04:32:18,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 04:32:18,943 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 360 transitions. [2024-11-14 04:32:18,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-14 04:32:18,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:18,945 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:18,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 04:32:18,945 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:18,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:18,945 INFO L85 PathProgramCache]: Analyzing trace with hash 808643489, now seen corresponding path program 1 times [2024-11-14 04:32:18,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:18,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256982819] [2024-11-14 04:32:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:18,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:19,105 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 04:32:19,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:19,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256982819] [2024-11-14 04:32:19,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256982819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:19,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:19,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:32:19,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409292178] [2024-11-14 04:32:19,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:19,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:32:19,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:19,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:32:19,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:32:19,108 INFO L87 Difference]: Start difference. First operand 286 states and 360 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:32:19,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:19,153 INFO L93 Difference]: Finished difference Result 754 states and 973 transitions. [2024-11-14 04:32:19,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:32:19,154 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-14 04:32:19,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:19,156 INFO L225 Difference]: With dead ends: 754 [2024-11-14 04:32:19,156 INFO L226 Difference]: Without dead ends: 516 [2024-11-14 04:32:19,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 04:32:19,158 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 24 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:19,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 149 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:32:19,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2024-11-14 04:32:19,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 482. [2024-11-14 04:32:19,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 1.2723492723492724) internal successors, (612), 481 states have internal predecessors, (612), 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 04:32:19,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 612 transitions. [2024-11-14 04:32:19,185 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 612 transitions. Word has length 64 [2024-11-14 04:32:19,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:19,187 INFO L471 AbstractCegarLoop]: Abstraction has 482 states and 612 transitions. [2024-11-14 04:32:19,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 04:32:19,187 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 612 transitions. [2024-11-14 04:32:19,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 04:32:19,191 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:19,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:19,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 04:32:19,192 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:19,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:19,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1458452867, now seen corresponding path program 1 times [2024-11-14 04:32:19,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:19,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568280121] [2024-11-14 04:32:19,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:19,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:19,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:19,266 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 04:32:19,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:19,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568280121] [2024-11-14 04:32:19,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568280121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:19,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:19,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:32:19,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664906779] [2024-11-14 04:32:19,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:19,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:32:19,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:19,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:32:19,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:32:19,270 INFO L87 Difference]: Start difference. First operand 482 states and 612 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 04:32:19,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:19,315 INFO L93 Difference]: Finished difference Result 1022 states and 1313 transitions. [2024-11-14 04:32:19,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:32:19,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-14 04:32:19,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:19,318 INFO L225 Difference]: With dead ends: 1022 [2024-11-14 04:32:19,318 INFO L226 Difference]: Without dead ends: 588 [2024-11-14 04:32:19,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 04:32:19,323 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 53 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:19,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 103 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:32:19,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-11-14 04:32:19,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 586. [2024-11-14 04:32:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 585 states have (on average 1.2615384615384615) internal successors, (738), 585 states have internal predecessors, (738), 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 04:32:19,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 738 transitions. [2024-11-14 04:32:19,346 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 738 transitions. Word has length 69 [2024-11-14 04:32:19,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:19,347 INFO L471 AbstractCegarLoop]: Abstraction has 586 states and 738 transitions. [2024-11-14 04:32:19,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 04:32:19,347 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 738 transitions. [2024-11-14 04:32:19,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-14 04:32:19,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:19,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:32:19,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 04:32:19,351 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:19,352 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:19,352 INFO L85 PathProgramCache]: Analyzing trace with hash 528323193, now seen corresponding path program 1 times [2024-11-14 04:32:19,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:19,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792515872] [2024-11-14 04:32:19,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:19,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:19,697 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 04:32:19,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:19,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792515872] [2024-11-14 04:32:19,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792515872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:32:19,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:32:19,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:32:19,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125949323] [2024-11-14 04:32:19,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:32:19,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-14 04:32:19,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:32:19,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-14 04:32:19,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-14 04:32:19,700 INFO L87 Difference]: Start difference. First operand 586 states and 738 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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 04:32:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:32:19,835 INFO L93 Difference]: Finished difference Result 593 states and 744 transitions. [2024-11-14 04:32:19,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 04:32:19,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2024-11-14 04:32:19,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:32:19,839 INFO L225 Difference]: With dead ends: 593 [2024-11-14 04:32:19,839 INFO L226 Difference]: Without dead ends: 591 [2024-11-14 04:32:19,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-14 04:32:19,840 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 54 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:32:19,841 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 369 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:32:19,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2024-11-14 04:32:19,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 589. [2024-11-14 04:32:19,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 588 states have (on average 1.2414965986394557) internal successors, (730), 588 states have internal predecessors, (730), 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 04:32:19,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 730 transitions. [2024-11-14 04:32:19,874 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 730 transitions. Word has length 70 [2024-11-14 04:32:19,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:32:19,874 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 730 transitions. [2024-11-14 04:32:19,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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 04:32:19,875 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 730 transitions. [2024-11-14 04:32:19,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-14 04:32:19,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:32:19,875 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 04:32:19,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 04:32:19,876 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:32:19,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:32:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash 853488606, now seen corresponding path program 1 times [2024-11-14 04:32:19,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 04:32:19,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426650428] [2024-11-14 04:32:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:19,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 04:32:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:32,311 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:32:32,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 04:32:32,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426650428] [2024-11-14 04:32:32,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426650428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 04:32:32,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488620218] [2024-11-14 04:32:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:32:32,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:32:32,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:32:32,314 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:32:32,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 04:32:32,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:32:32,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-14 04:32:32,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:32:47,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:32:47,773 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:35:21,995 WARN L286 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 329 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:38:25,045 WARN L286 SmtUtils]: Spent 23.29s on a formula simplification that was a NOOP. DAG size: 642 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-14 04:42:55,585 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:42:55,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2024-11-14 04:42:55,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:42:55,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1067114722] [2024-11-14 04:42:55,611 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2024-11-14 04:42:55,611 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 04:42:55,615 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 04:42:55,621 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 04:42:55,621 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 04:42:55,853 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:42:55,863 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-14 04:42:55,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2024-11-14 04:42:55,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945523969] [2024-11-14 04:42:55,863 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-14 04:42:55,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-14 04:42:55,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 04:42:55,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-14 04:42:55,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=689, Invalid=5317, Unknown=0, NotChecked=0, Total=6006 [2024-11-14 04:42:55,868 INFO L87 Difference]: Start difference. First operand 589 states and 730 transitions. Second operand has 31 states, 31 states have (on average 2.6451612903225805) internal successors, (82), 30 states have internal predecessors, (82), 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 04:42:55,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1939 ImplicationChecksByTransitivity, 50.4s TimeCoverageRelationStatistics Valid=689, Invalid=5317, Unknown=0, NotChecked=0, Total=6006 [2024-11-14 04:42:55,873 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 04:42:55,873 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 04:42:55,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 04:42:56,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-14 04:42:56,074 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_8692bb69-76ff-4595-825c-614be521aab7/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 04:42:56,078 INFO L158 Benchmark]: Toolchain (without parser) took 655984.72ms. Allocated memory was 142.6MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 119.1MB in the beginning and 862.6MB in the end (delta: -743.5MB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-11-14 04:42:56,078 INFO L158 Benchmark]: CDTParser took 1.66ms. Allocated memory is still 142.6MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:42:56,079 INFO L158 Benchmark]: CACSL2BoogieTranslator took 557.97ms. Allocated memory is still 142.6MB. Free memory was 118.9MB in the beginning and 102.0MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-14 04:42:56,079 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.74ms. Allocated memory is still 142.6MB. Free memory was 102.0MB in the beginning and 99.4MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:42:56,079 INFO L158 Benchmark]: Boogie Preprocessor took 50.16ms. Allocated memory is still 142.6MB. Free memory was 99.4MB in the beginning and 97.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-14 04:42:56,080 INFO L158 Benchmark]: RCFGBuilder took 1043.94ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 46.6MB in the end (delta: 51.1MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-11-14 04:42:56,080 INFO L158 Benchmark]: TraceAbstraction took 654246.54ms. Allocated memory was 142.6MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 46.1MB in the beginning and 862.6MB in the end (delta: -816.4MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-11-14 04:42:56,082 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.66ms. Allocated memory is still 142.6MB. Free memory is still 79.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 557.97ms. Allocated memory is still 142.6MB. Free memory was 118.9MB in the beginning and 102.0MB in the end (delta: 16.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.74ms. Allocated memory is still 142.6MB. Free memory was 102.0MB in the beginning and 99.4MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 50.16ms. Allocated memory is still 142.6MB. Free memory was 99.4MB in the beginning and 97.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1043.94ms. Allocated memory is still 142.6MB. Free memory was 97.7MB in the beginning and 46.6MB in the end (delta: 51.1MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 654246.54ms. Allocated memory was 142.6MB in the beginning and 2.1GB in the end (delta: 2.0GB). Free memory was 46.1MB in the beginning and 862.6MB in the end (delta: -816.4MB). 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_8692bb69-76ff-4595-825c-614be521aab7/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_8692bb69-76ff-4595-825c-614be521aab7/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_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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_8692bb69-76ff-4595-825c-614be521aab7/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 561889d92df45f99e756a59f568aff549bcbf1af3442520c3f6faf4dbc996ed6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 04:42:58,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 04:42:59,110 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2024-11-14 04:42:59,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 04:42:59,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 04:42:59,159 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 04:42:59,160 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 04:42:59,161 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 04:42:59,161 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 04:42:59,162 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 04:42:59,163 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 04:42:59,163 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 04:42:59,164 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 04:42:59,164 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 04:42:59,164 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 04:42:59,164 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 04:42:59,164 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 04:42:59,165 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 04:42:59,165 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 04:42:59,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 04:42:59,165 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 04:42:59,165 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 04:42:59,165 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 04:42:59,165 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 04:42:59,165 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-14 04:42:59,165 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-14 04:42:59,165 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 04:42:59,165 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-14 04:42:59,166 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 04:42:59,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 04:42:59,166 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 04:42:59,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 04:42:59,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-14 04:42:59,168 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 04:42:59,168 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 04:42:59,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:42:59,169 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 04:42:59,169 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 04:42:59,169 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 04:42:59,169 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2024-11-14 04:42:59,169 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-14 04:42:59,170 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 04:42:59,170 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 04:42:59,170 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_8692bb69-76ff-4595-825c-614be521aab7/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 -> 561889d92df45f99e756a59f568aff549bcbf1af3442520c3f6faf4dbc996ed6 [2024-11-14 04:42:59,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 04:42:59,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 04:42:59,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 04:42:59,597 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 04:42:59,600 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 04:42:59,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c Unable to find full path for "g++" [2024-11-14 04:43:01,862 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 04:43:02,132 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 04:43:02,133 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-11-14 04:43:02,148 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/data/3595c0563/516b0c970418481da93d94539717f895/FLAGd042c5051 [2024-11-14 04:43:02,166 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/data/3595c0563/516b0c970418481da93d94539717f895 [2024-11-14 04:43:02,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 04:43:02,170 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 04:43:02,172 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 04:43:02,172 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 04:43:02,176 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 04:43:02,177 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,178 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b53684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02, skipping insertion in model container [2024-11-14 04:43:02,178 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,212 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 04:43:02,483 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_8692bb69-76ff-4595-825c-614be521aab7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7180,7193] [2024-11-14 04:43:02,518 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_8692bb69-76ff-4595-825c-614be521aab7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9491,9504] [2024-11-14 04:43:02,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:43:02,559 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 04:43:02,620 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_8692bb69-76ff-4595-825c-614be521aab7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[7180,7193] [2024-11-14 04:43:02,634 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_8692bb69-76ff-4595-825c-614be521aab7/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[9491,9504] [2024-11-14 04:43:02,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 04:43:02,667 INFO L204 MainTranslator]: Completed translation [2024-11-14 04:43:02,667 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02 WrapperNode [2024-11-14 04:43:02,668 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 04:43:02,669 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 04:43:02,669 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 04:43:02,669 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 04:43:02,675 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,769 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 495 [2024-11-14 04:43:02,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 04:43:02,770 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 04:43:02,770 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 04:43:02,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 04:43:02,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,796 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,796 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,818 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,831 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 04:43:02,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 04:43:02,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 04:43:02,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 04:43:02,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02" (1/1) ... [2024-11-14 04:43:02,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 04:43:02,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:43:02,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 04:43:02,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 04:43:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 04:43:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2024-11-14 04:43:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 04:43:02,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 04:43:03,152 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 04:43:03,154 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 04:43:03,897 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2024-11-14 04:43:03,897 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 04:43:03,912 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 04:43:03,912 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 04:43:03,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:43:03 BoogieIcfgContainer [2024-11-14 04:43:03,913 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 04:43:03,916 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 04:43:03,916 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 04:43:03,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 04:43:03,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:43:02" (1/3) ... [2024-11-14 04:43:03,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e97776e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:43:03, skipping insertion in model container [2024-11-14 04:43:03,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:43:02" (2/3) ... [2024-11-14 04:43:03,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e97776e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:43:03, skipping insertion in model container [2024-11-14 04:43:03,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:43:03" (3/3) ... [2024-11-14 04:43:03,926 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2024-11-14 04:43:03,945 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 04:43:03,947 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c that has 1 procedures, 106 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2024-11-14 04:43:04,028 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 04:43:04,046 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;@39ce1c6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 04:43:04,046 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-14 04:43:04,051 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 103 states have (on average 1.7572815533980584) internal successors, (181), 105 states have internal predecessors, (181), 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 04:43:04,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-14 04:43:04,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:04,061 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] [2024-11-14 04:43:04,061 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:04,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:04,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1038847250, now seen corresponding path program 1 times [2024-11-14 04:43:04,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:04,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363189777] [2024-11-14 04:43:04,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:04,085 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 04:43:04,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:04,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:04,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:04,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:43:04,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:05,058 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 04:43:05,058 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:05,059 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:05,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363189777] [2024-11-14 04:43:05,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363189777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:05,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:05,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:43:05,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705264089] [2024-11-14 04:43:05,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:05,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:43:05,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:05,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:43:05,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:43:05,096 INFO L87 Difference]: Start difference. First operand has 106 states, 103 states have (on average 1.7572815533980584) internal successors, (181), 105 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 04:43:05,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:05,418 INFO L93 Difference]: Finished difference Result 195 states and 322 transitions. [2024-11-14 04:43:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:43:05,421 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 48 [2024-11-14 04:43:05,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:05,433 INFO L225 Difference]: With dead ends: 195 [2024-11-14 04:43:05,433 INFO L226 Difference]: Without dead ends: 103 [2024-11-14 04:43:05,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:43:05,442 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 476 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:05,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 128 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:43:05,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-14 04:43:05,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-14 04:43:05,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.3564356435643565) internal successors, (137), 102 states have internal predecessors, (137), 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 04:43:05,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 137 transitions. [2024-11-14 04:43:05,503 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 137 transitions. Word has length 48 [2024-11-14 04:43:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:05,504 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 137 transitions. [2024-11-14 04:43:05,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 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 04:43:05,504 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 137 transitions. [2024-11-14 04:43:05,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 04:43:05,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:05,507 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] [2024-11-14 04:43:05,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:05,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:05,710 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:05,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:05,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1283150742, now seen corresponding path program 1 times [2024-11-14 04:43:05,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:05,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289744149] [2024-11-14 04:43:05,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:05,712 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 04:43:05,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:05,716 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:05,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:05,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:43:05,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:06,306 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 04:43:06,306 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:06,307 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:06,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289744149] [2024-11-14 04:43:06,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289744149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:06,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:06,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:43:06,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811064117] [2024-11-14 04:43:06,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:06,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:43:06,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:06,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:43:06,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:43:06,313 INFO L87 Difference]: Start difference. First operand 103 states and 137 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 04:43:06,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:06,518 INFO L93 Difference]: Finished difference Result 179 states and 246 transitions. [2024-11-14 04:43:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:43:06,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2024-11-14 04:43:06,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:06,521 INFO L225 Difference]: With dead ends: 179 [2024-11-14 04:43:06,521 INFO L226 Difference]: Without dead ends: 103 [2024-11-14 04:43:06,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:43:06,522 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 234 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:06,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 88 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:43:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-14 04:43:06,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-14 04:43:06,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.3366336633663367) internal successors, (135), 102 states have internal predecessors, (135), 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 04:43:06,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 135 transitions. [2024-11-14 04:43:06,539 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 135 transitions. Word has length 49 [2024-11-14 04:43:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:06,540 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 135 transitions. [2024-11-14 04:43:06,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 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 04:43:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 135 transitions. [2024-11-14 04:43:06,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 04:43:06,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:06,541 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] [2024-11-14 04:43:06,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:06,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:06,742 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:06,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:06,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1212294686, now seen corresponding path program 1 times [2024-11-14 04:43:06,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:06,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079028071] [2024-11-14 04:43:06,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:06,743 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 04:43:06,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:06,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:06,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:06,885 INFO L255 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:43:06,888 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:07,222 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 04:43:07,223 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:07,223 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:07,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079028071] [2024-11-14 04:43:07,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079028071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:07,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:07,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:43:07,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177227357] [2024-11-14 04:43:07,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:07,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:43:07,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:07,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:43:07,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:43:07,225 INFO L87 Difference]: Start difference. First operand 103 states and 135 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 04:43:07,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:07,380 INFO L93 Difference]: Finished difference Result 175 states and 238 transitions. [2024-11-14 04:43:07,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:43:07,381 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2024-11-14 04:43:07,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:07,382 INFO L225 Difference]: With dead ends: 175 [2024-11-14 04:43:07,382 INFO L226 Difference]: Without dead ends: 103 [2024-11-14 04:43:07,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-14 04:43:07,383 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 222 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:07,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 96 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:43:07,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-14 04:43:07,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-14 04:43:07,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.316831683168317) internal successors, (133), 102 states have internal predecessors, (133), 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 04:43:07,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 133 transitions. [2024-11-14 04:43:07,391 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 133 transitions. Word has length 50 [2024-11-14 04:43:07,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:07,391 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 133 transitions. [2024-11-14 04:43:07,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 04:43:07,392 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 133 transitions. [2024-11-14 04:43:07,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 04:43:07,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:07,393 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] [2024-11-14 04:43:07,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:07,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:07,593 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:07,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:07,594 INFO L85 PathProgramCache]: Analyzing trace with hash 103153886, now seen corresponding path program 1 times [2024-11-14 04:43:07,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:07,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73631326] [2024-11-14 04:43:07,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:07,595 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 04:43:07,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:07,599 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:07,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:07,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-14 04:43:07,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:08,437 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 04:43:08,438 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:08,438 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:08,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [73631326] [2024-11-14 04:43:08,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [73631326] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:08,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:08,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-14 04:43:08,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59638512] [2024-11-14 04:43:08,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:08,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-14 04:43:08,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:08,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-14 04:43:08,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-14 04:43:08,440 INFO L87 Difference]: Start difference. First operand 103 states and 133 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 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 04:43:09,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:09,095 INFO L93 Difference]: Finished difference Result 164 states and 221 transitions. [2024-11-14 04:43:09,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-14 04:43:09,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 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 51 [2024-11-14 04:43:09,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:09,099 INFO L225 Difference]: With dead ends: 164 [2024-11-14 04:43:09,100 INFO L226 Difference]: Without dead ends: 103 [2024-11-14 04:43:09,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-14 04:43:09,101 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 238 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:09,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 283 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:43:09,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-14 04:43:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-14 04:43:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.306930693069307) internal successors, (132), 102 states have internal predecessors, (132), 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 04:43:09,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 132 transitions. [2024-11-14 04:43:09,111 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 132 transitions. Word has length 51 [2024-11-14 04:43:09,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:09,111 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 132 transitions. [2024-11-14 04:43:09,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 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 04:43:09,112 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 132 transitions. [2024-11-14 04:43:09,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 04:43:09,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:09,113 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 04:43:09,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:09,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:09,314 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:09,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:09,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1501502674, now seen corresponding path program 1 times [2024-11-14 04:43:09,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:09,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005847378] [2024-11-14 04:43:09,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:09,315 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 04:43:09,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:09,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:09,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:09,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:43:09,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:10,226 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 04:43:10,226 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:10,226 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:10,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005847378] [2024-11-14 04:43:10,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005847378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:10,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:10,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 04:43:10,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500636377] [2024-11-14 04:43:10,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:10,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:43:10,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:10,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:43:10,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:43:10,228 INFO L87 Difference]: Start difference. First operand 103 states and 132 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 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 04:43:11,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:11,062 INFO L93 Difference]: Finished difference Result 159 states and 212 transitions. [2024-11-14 04:43:11,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:43:11,063 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 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 04:43:11,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:11,064 INFO L225 Difference]: With dead ends: 159 [2024-11-14 04:43:11,065 INFO L226 Difference]: Without dead ends: 103 [2024-11-14 04:43:11,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2024-11-14 04:43:11,067 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 272 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:11,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 320 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-14 04:43:11,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-14 04:43:11,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-14 04:43:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.297029702970297) internal successors, (131), 102 states have internal predecessors, (131), 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 04:43:11,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 131 transitions. [2024-11-14 04:43:11,078 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 131 transitions. Word has length 52 [2024-11-14 04:43:11,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:11,078 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 131 transitions. [2024-11-14 04:43:11,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 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 04:43:11,078 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 131 transitions. [2024-11-14 04:43:11,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 04:43:11,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:11,082 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 04:43:11,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:11,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:11,283 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:11,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1547592619, now seen corresponding path program 1 times [2024-11-14 04:43:11,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:11,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954805674] [2024-11-14 04:43:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:11,284 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 04:43:11,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:11,286 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:11,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:11,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:11,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:43:11,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:12,176 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 04:43:12,176 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:12,177 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:12,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954805674] [2024-11-14 04:43:12,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954805674] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:12,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:12,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-14 04:43:12,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402861122] [2024-11-14 04:43:12,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:12,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-14 04:43:12,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:12,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-14 04:43:12,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-14 04:43:12,179 INFO L87 Difference]: Start difference. First operand 103 states and 131 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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 04:43:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:12,923 INFO L93 Difference]: Finished difference Result 154 states and 203 transitions. [2024-11-14 04:43:12,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-14 04:43:12,924 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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 04:43:12,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:12,926 INFO L225 Difference]: With dead ends: 154 [2024-11-14 04:43:12,927 INFO L226 Difference]: Without dead ends: 103 [2024-11-14 04:43:12,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2024-11-14 04:43:12,930 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 265 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:12,930 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 325 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:43:12,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-14 04:43:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-14 04:43:12,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.2871287128712872) internal successors, (130), 102 states have internal predecessors, (130), 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 04:43:12,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 130 transitions. [2024-11-14 04:43:12,939 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 130 transitions. Word has length 53 [2024-11-14 04:43:12,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:12,943 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 130 transitions. [2024-11-14 04:43:12,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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 04:43:12,943 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 130 transitions. [2024-11-14 04:43:12,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 04:43:12,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:12,944 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 04:43:12,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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)] Ended with exit code 0 [2024-11-14 04:43:13,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:13,145 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:13,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:13,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1622219017, now seen corresponding path program 1 times [2024-11-14 04:43:13,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:13,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572748766] [2024-11-14 04:43:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:13,146 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 04:43:13,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:13,148 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:13,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:13,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:43:13,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:13,753 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 04:43:13,753 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:13,753 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:13,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572748766] [2024-11-14 04:43:13,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572748766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:13,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:13,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:43:13,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115395891] [2024-11-14 04:43:13,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:13,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:43:13,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:13,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:43:13,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:43:13,755 INFO L87 Difference]: Start difference. First operand 103 states and 130 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 04:43:13,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:13,952 INFO L93 Difference]: Finished difference Result 311 states and 427 transitions. [2024-11-14 04:43:13,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:43:13,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 04:43:13,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:13,955 INFO L225 Difference]: With dead ends: 311 [2024-11-14 04:43:13,955 INFO L226 Difference]: Without dead ends: 266 [2024-11-14 04:43:13,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:43:13,956 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 237 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:13,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 505 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:43:13,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-14 04:43:13,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 203. [2024-11-14 04:43:13,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 201 states have (on average 1.3681592039800996) internal successors, (275), 202 states have internal predecessors, (275), 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 04:43:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2024-11-14 04:43:13,970 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 54 [2024-11-14 04:43:13,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:13,970 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2024-11-14 04:43:13,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 04:43:13,970 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2024-11-14 04:43:13,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 04:43:13,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:13,974 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 04:43:13,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:14,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:14,178 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:14,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:14,178 INFO L85 PathProgramCache]: Analyzing trace with hash -2014598980, now seen corresponding path program 1 times [2024-11-14 04:43:14,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:14,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682158812] [2024-11-14 04:43:14,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:14,179 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 04:43:14,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:14,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:14,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:14,298 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:43:14,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:14,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:14,593 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:14,594 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:14,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682158812] [2024-11-14 04:43:14,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682158812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:14,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:14,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:43:14,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064802569] [2024-11-14 04:43:14,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:14,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:43:14,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:14,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:43:14,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:43:14,596 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 04:43:14,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:14,818 INFO L93 Difference]: Finished difference Result 396 states and 549 transitions. [2024-11-14 04:43:14,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:43:14,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 04:43:14,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:14,821 INFO L225 Difference]: With dead ends: 396 [2024-11-14 04:43:14,821 INFO L226 Difference]: Without dead ends: 352 [2024-11-14 04:43:14,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:43:14,822 INFO L432 NwaCegarLoop]: 309 mSDtfsCounter, 213 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:14,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 733 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:43:14,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-14 04:43:14,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 294. [2024-11-14 04:43:14,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 292 states have (on average 1.3835616438356164) internal successors, (404), 293 states have internal predecessors, (404), 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 04:43:14,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 404 transitions. [2024-11-14 04:43:14,836 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 404 transitions. Word has length 55 [2024-11-14 04:43:14,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:14,837 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 404 transitions. [2024-11-14 04:43:14,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 04:43:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 404 transitions. [2024-11-14 04:43:14,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 04:43:14,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:14,838 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 04:43:14,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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)] Ended with exit code 0 [2024-11-14 04:43:15,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:15,041 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:15,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:15,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1559648541, now seen corresponding path program 1 times [2024-11-14 04:43:15,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:15,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1241609227] [2024-11-14 04:43:15,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:15,042 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 04:43:15,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:15,047 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:15,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:15,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:43:15,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:15,427 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 04:43:15,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:15,428 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:15,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1241609227] [2024-11-14 04:43:15,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1241609227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:15,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:15,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:43:15,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397534735] [2024-11-14 04:43:15,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:15,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:43:15,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:15,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:43:15,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:43:15,430 INFO L87 Difference]: Start difference. First operand 294 states and 404 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 04:43:15,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:15,590 INFO L93 Difference]: Finished difference Result 445 states and 618 transitions. [2024-11-14 04:43:15,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:43:15,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 04:43:15,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:15,593 INFO L225 Difference]: With dead ends: 445 [2024-11-14 04:43:15,593 INFO L226 Difference]: Without dead ends: 401 [2024-11-14 04:43:15,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:43:15,594 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 213 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:15,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 502 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 04:43:15,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-14 04:43:15,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 334. [2024-11-14 04:43:15,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 332 states have (on average 1.391566265060241) internal successors, (462), 333 states have internal predecessors, (462), 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 04:43:15,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 462 transitions. [2024-11-14 04:43:15,609 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 462 transitions. Word has length 55 [2024-11-14 04:43:15,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:15,609 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 462 transitions. [2024-11-14 04:43:15,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 04:43:15,609 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 462 transitions. [2024-11-14 04:43:15,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 04:43:15,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:15,610 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 04:43:15,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:15,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:15,811 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:15,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:15,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1551515138, now seen corresponding path program 1 times [2024-11-14 04:43:15,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:15,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628428234] [2024-11-14 04:43:15,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:15,812 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 04:43:15,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:15,814 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:15,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:15,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 04:43:15,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:16,175 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 04:43:16,175 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:16,175 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:16,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628428234] [2024-11-14 04:43:16,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628428234] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:16,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:16,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:43:16,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001827498] [2024-11-14 04:43:16,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:16,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:43:16,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:16,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:43:16,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:43:16,177 INFO L87 Difference]: Start difference. First operand 334 states and 462 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 04:43:16,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:16,352 INFO L93 Difference]: Finished difference Result 483 states and 672 transitions. [2024-11-14 04:43:16,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:43:16,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 04:43:16,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:16,354 INFO L225 Difference]: With dead ends: 483 [2024-11-14 04:43:16,354 INFO L226 Difference]: Without dead ends: 359 [2024-11-14 04:43:16,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:43:16,355 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 214 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:16,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 622 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 04:43:16,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-11-14 04:43:16,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 288. [2024-11-14 04:43:16,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 286 states have (on average 1.3741258741258742) internal successors, (393), 287 states have internal predecessors, (393), 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 04:43:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 393 transitions. [2024-11-14 04:43:16,376 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 393 transitions. Word has length 55 [2024-11-14 04:43:16,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:16,377 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 393 transitions. [2024-11-14 04:43:16,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 04:43:16,377 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 393 transitions. [2024-11-14 04:43:16,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 04:43:16,381 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:16,381 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 04:43:16,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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)] Ended with exit code 0 [2024-11-14 04:43:16,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:16,581 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:16,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:16,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2014195720, now seen corresponding path program 1 times [2024-11-14 04:43:16,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:16,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213142266] [2024-11-14 04:43:16,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:16,583 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 04:43:16,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:16,585 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:16,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:16,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-14 04:43:16,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:18,597 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:18,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:18,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213142266] [2024-11-14 04:43:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213142266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:18,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:18,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-14 04:43:18,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394992723] [2024-11-14 04:43:18,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:18,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-14 04:43:18,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:18,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-14 04:43:18,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2024-11-14 04:43:18,600 INFO L87 Difference]: Start difference. First operand 288 states and 393 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 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 04:43:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:20,428 INFO L93 Difference]: Finished difference Result 1019 states and 1430 transitions. [2024-11-14 04:43:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-14 04:43:20,429 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 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 04:43:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:20,433 INFO L225 Difference]: With dead ends: 1019 [2024-11-14 04:43:20,434 INFO L226 Difference]: Without dead ends: 949 [2024-11-14 04:43:20,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2024-11-14 04:43:20,436 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 629 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:20,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 1682 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-14 04:43:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2024-11-14 04:43:20,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 278. [2024-11-14 04:43:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 276 states have (on average 1.3695652173913044) internal successors, (378), 277 states have internal predecessors, (378), 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 04:43:20,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 378 transitions. [2024-11-14 04:43:20,463 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 378 transitions. Word has length 56 [2024-11-14 04:43:20,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:20,464 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 378 transitions. [2024-11-14 04:43:20,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 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 04:43:20,464 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 378 transitions. [2024-11-14 04:43:20,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 04:43:20,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:20,466 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 04:43:20,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:20,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:20,666 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:20,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:20,667 INFO L85 PathProgramCache]: Analyzing trace with hash 929811098, now seen corresponding path program 1 times [2024-11-14 04:43:20,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:20,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114009553] [2024-11-14 04:43:20,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:20,667 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 04:43:20,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:20,669 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:20,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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)] Waiting until timeout for monitored process [2024-11-14 04:43:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:20,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:43:20,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:21,475 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 04:43:21,475 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:21,476 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:21,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114009553] [2024-11-14 04:43:21,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114009553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:21,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:21,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 04:43:21,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465491115] [2024-11-14 04:43:21,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:21,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:43:21,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:21,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:43:21,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:43:21,477 INFO L87 Difference]: Start difference. First operand 278 states and 378 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 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 04:43:22,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:22,058 INFO L93 Difference]: Finished difference Result 552 states and 766 transitions. [2024-11-14 04:43:22,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 04:43:22,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 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 04:43:22,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:22,061 INFO L225 Difference]: With dead ends: 552 [2024-11-14 04:43:22,061 INFO L226 Difference]: Without dead ends: 492 [2024-11-14 04:43:22,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-14 04:43:22,062 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 410 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:22,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 966 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 04:43:22,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-14 04:43:22,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 267. [2024-11-14 04:43:22,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 265 states have (on average 1.3660377358490565) internal successors, (362), 266 states have internal predecessors, (362), 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 04:43:22,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 362 transitions. [2024-11-14 04:43:22,076 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 362 transitions. Word has length 56 [2024-11-14 04:43:22,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:22,076 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 362 transitions. [2024-11-14 04:43:22,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 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 04:43:22,077 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 362 transitions. [2024-11-14 04:43:22,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 04:43:22,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:22,077 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 04:43:22,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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)] Ended with exit code 0 [2024-11-14 04:43:22,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:22,278 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:22,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:22,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1026982439, now seen corresponding path program 1 times [2024-11-14 04:43:22,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:22,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112692722] [2024-11-14 04:43:22,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:22,279 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 04:43:22,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:22,280 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:22,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:22,370 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-14 04:43:22,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:24,087 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 04:43:24,087 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:24,087 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:24,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112692722] [2024-11-14 04:43:24,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112692722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:24,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:24,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-14 04:43:24,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628908355] [2024-11-14 04:43:24,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:24,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-14 04:43:24,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:24,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-14 04:43:24,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-11-14 04:43:24,090 INFO L87 Difference]: Start difference. First operand 267 states and 362 transitions. Second operand has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 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 04:43:27,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:27,360 INFO L93 Difference]: Finished difference Result 1140 states and 1607 transitions. [2024-11-14 04:43:27,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-14 04:43:27,360 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 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 04:43:27,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:27,364 INFO L225 Difference]: With dead ends: 1140 [2024-11-14 04:43:27,364 INFO L226 Difference]: Without dead ends: 925 [2024-11-14 04:43:27,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2024-11-14 04:43:27,366 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 566 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:27,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 2418 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-14 04:43:27,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2024-11-14 04:43:27,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 276. [2024-11-14 04:43:27,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 274 states have (on average 1.3576642335766422) internal successors, (372), 275 states have internal predecessors, (372), 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 04:43:27,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 372 transitions. [2024-11-14 04:43:27,383 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 372 transitions. Word has length 56 [2024-11-14 04:43:27,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:27,383 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 372 transitions. [2024-11-14 04:43:27,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 20 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 04:43:27,384 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 372 transitions. [2024-11-14 04:43:27,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 04:43:27,384 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:27,384 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, 1] [2024-11-14 04:43:27,389 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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)] Ended with exit code 0 [2024-11-14 04:43:27,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:27,585 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:27,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:27,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1168073188, now seen corresponding path program 1 times [2024-11-14 04:43:27,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:27,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169352318] [2024-11-14 04:43:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:27,586 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 04:43:27,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:27,591 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:27,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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)] Waiting until timeout for monitored process [2024-11-14 04:43:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:27,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:43:27,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:28,336 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 04:43:28,337 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:28,337 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:28,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169352318] [2024-11-14 04:43:28,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169352318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:28,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:28,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-14 04:43:28,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161788729] [2024-11-14 04:43:28,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:28,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-14 04:43:28,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:28,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-14 04:43:28,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-14 04:43:28,338 INFO L87 Difference]: Start difference. First operand 276 states and 372 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 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 04:43:29,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:29,007 INFO L93 Difference]: Finished difference Result 489 states and 679 transitions. [2024-11-14 04:43:29,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-14 04:43:29,008 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 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 57 [2024-11-14 04:43:29,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:29,010 INFO L225 Difference]: With dead ends: 489 [2024-11-14 04:43:29,010 INFO L226 Difference]: Without dead ends: 482 [2024-11-14 04:43:29,010 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2024-11-14 04:43:29,011 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 277 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:29,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 942 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 04:43:29,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2024-11-14 04:43:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 268. [2024-11-14 04:43:29,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.3632958801498127) internal successors, (364), 267 states have internal predecessors, (364), 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 04:43:29,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 364 transitions. [2024-11-14 04:43:29,021 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 364 transitions. Word has length 57 [2024-11-14 04:43:29,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:29,021 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 364 transitions. [2024-11-14 04:43:29,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 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 04:43:29,022 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 364 transitions. [2024-11-14 04:43:29,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-14 04:43:29,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:29,023 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:43:29,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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)] Ended with exit code 0 [2024-11-14 04:43:29,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:29,225 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:29,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2101821275, now seen corresponding path program 1 times [2024-11-14 04:43:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:29,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598748982] [2024-11-14 04:43:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:29,226 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 04:43:29,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:29,229 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:29,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:29,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:29,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:43:29,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:29,423 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 04:43:29,423 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:29,424 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:29,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598748982] [2024-11-14 04:43:29,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598748982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:29,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:29,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:43:29,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606754825] [2024-11-14 04:43:29,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:29,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:43:29,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:29,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:43:29,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:43:29,425 INFO L87 Difference]: Start difference. First operand 268 states and 364 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 04:43:29,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:29,453 INFO L93 Difference]: Finished difference Result 632 states and 892 transitions. [2024-11-14 04:43:29,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:43:29,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 77 [2024-11-14 04:43:29,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:29,456 INFO L225 Difference]: With dead ends: 632 [2024-11-14 04:43:29,456 INFO L226 Difference]: Without dead ends: 430 [2024-11-14 04:43:29,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 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 04:43:29,459 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 71 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:29,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 243 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:43:29,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2024-11-14 04:43:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2024-11-14 04:43:29,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.3864168618266979) internal successors, (592), 427 states have internal predecessors, (592), 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 04:43:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 592 transitions. [2024-11-14 04:43:29,477 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 592 transitions. Word has length 77 [2024-11-14 04:43:29,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:29,477 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 592 transitions. [2024-11-14 04:43:29,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 04:43:29,477 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 592 transitions. [2024-11-14 04:43:29,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-14 04:43:29,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:29,478 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, 1, 1, 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 04:43:29,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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)] Forceful destruction successful, exit code 0 [2024-11-14 04:43:29,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:29,679 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:29,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:29,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1991826359, now seen corresponding path program 1 times [2024-11-14 04:43:29,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:29,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679872166] [2024-11-14 04:43:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:29,680 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 04:43:29,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:29,683 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:29,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 (17)] Waiting until timeout for monitored process [2024-11-14 04:43:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:29,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:43:29,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:29,835 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 04:43:29,835 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:29,835 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:29,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679872166] [2024-11-14 04:43:29,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679872166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:29,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:29,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:43:29,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929277438] [2024-11-14 04:43:29,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:29,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:43:29,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:29,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:43:29,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:43:29,837 INFO L87 Difference]: Start difference. First operand 428 states and 592 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 04:43:29,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:29,862 INFO L93 Difference]: Finished difference Result 1072 states and 1516 transitions. [2024-11-14 04:43:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:43:29,863 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 04:43:29,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:29,865 INFO L225 Difference]: With dead ends: 1072 [2024-11-14 04:43:29,866 INFO L226 Difference]: Without dead ends: 710 [2024-11-14 04:43:29,866 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 04:43:29,867 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 64 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:29,867 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 241 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:43:29,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-11-14 04:43:29,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 708. [2024-11-14 04:43:29,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.3903818953323903) internal successors, (983), 707 states have internal predecessors, (983), 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 04:43:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 983 transitions. [2024-11-14 04:43:29,886 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 983 transitions. Word has length 78 [2024-11-14 04:43:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:29,886 INFO L471 AbstractCegarLoop]: Abstraction has 708 states and 983 transitions. [2024-11-14 04:43:29,886 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 04:43:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 983 transitions. [2024-11-14 04:43:29,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-14 04:43:29,887 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:29,887 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, 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 04:43:29,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 (17)] Ended with exit code 0 [2024-11-14 04:43:30,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:30,088 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:30,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:30,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1711298594, now seen corresponding path program 1 times [2024-11-14 04:43:30,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:30,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1832667770] [2024-11-14 04:43:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:30,090 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 04:43:30,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:30,091 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:30,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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)] Waiting until timeout for monitored process [2024-11-14 04:43:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:30,218 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-14 04:43:30,219 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:30,262 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 04:43:30,262 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:30,262 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:30,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1832667770] [2024-11-14 04:43:30,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1832667770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:30,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:30,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 04:43:30,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869672149] [2024-11-14 04:43:30,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:30,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 04:43:30,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:30,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 04:43:30,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 04:43:30,264 INFO L87 Difference]: Start difference. First operand 708 states and 983 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 04:43:30,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:30,291 INFO L93 Difference]: Finished difference Result 1832 states and 2569 transitions. [2024-11-14 04:43:30,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 04:43:30,291 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 04:43:30,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:30,295 INFO L225 Difference]: With dead ends: 1832 [2024-11-14 04:43:30,295 INFO L226 Difference]: Without dead ends: 1190 [2024-11-14 04:43:30,297 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 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 04:43:30,297 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 57 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:30,298 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 238 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:43:30,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2024-11-14 04:43:30,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1188. [2024-11-14 04:43:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1187 states have (on average 1.3774220724515585) internal successors, (1635), 1187 states have internal predecessors, (1635), 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 04:43:30,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1635 transitions. [2024-11-14 04:43:30,328 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1635 transitions. Word has length 79 [2024-11-14 04:43:30,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:30,328 INFO L471 AbstractCegarLoop]: Abstraction has 1188 states and 1635 transitions. [2024-11-14 04:43:30,328 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 04:43:30,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1635 transitions. [2024-11-14 04:43:30,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-14 04:43:30,329 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:30,329 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, 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 04:43:30,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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)] Ended with exit code 0 [2024-11-14 04:43:30,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:30,530 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:30,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:30,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1315869462, now seen corresponding path program 1 times [2024-11-14 04:43:30,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:30,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [409977939] [2024-11-14 04:43:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:30,531 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 04:43:30,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:30,533 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:30,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:30,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-14 04:43:30,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:30,815 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 04:43:30,815 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:30,815 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:30,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [409977939] [2024-11-14 04:43:30,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [409977939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:30,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:30,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 04:43:30,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636208358] [2024-11-14 04:43:30,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:30,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 04:43:30,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:30,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 04:43:30,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:43:30,817 INFO L87 Difference]: Start difference. First operand 1188 states and 1635 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 04:43:30,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:30,871 INFO L93 Difference]: Finished difference Result 2739 states and 3788 transitions. [2024-11-14 04:43:30,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 04:43:30,872 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 04:43:30,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:30,877 INFO L225 Difference]: With dead ends: 2739 [2024-11-14 04:43:30,878 INFO L226 Difference]: Without dead ends: 1617 [2024-11-14 04:43:30,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 04:43:30,880 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 37 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:30,880 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 318 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:43:30,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2024-11-14 04:43:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1615. [2024-11-14 04:43:30,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1615 states, 1614 states have (on average 1.3618339529120198) internal successors, (2198), 1614 states have internal predecessors, (2198), 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 04:43:30,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2198 transitions. [2024-11-14 04:43:30,919 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2198 transitions. Word has length 80 [2024-11-14 04:43:30,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:30,920 INFO L471 AbstractCegarLoop]: Abstraction has 1615 states and 2198 transitions. [2024-11-14 04:43:30,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 04:43:30,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2198 transitions. [2024-11-14 04:43:30,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-14 04:43:30,921 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:30,921 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, 1, 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 04:43:30,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:31,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:31,125 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:31,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:31,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1675906608, now seen corresponding path program 1 times [2024-11-14 04:43:31,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:31,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625986083] [2024-11-14 04:43:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:31,125 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 04:43:31,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:31,128 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:31,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 (20)] Waiting until timeout for monitored process [2024-11-14 04:43:31,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:31,255 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-14 04:43:31,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:31,287 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 04:43:31,287 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 04:43:31,287 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:31,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625986083] [2024-11-14 04:43:31,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625986083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 04:43:31,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 04:43:31,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 04:43:31,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481000455] [2024-11-14 04:43:31,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 04:43:31,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 04:43:31,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:31,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 04:43:31,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 04:43:31,288 INFO L87 Difference]: Start difference. First operand 1615 states and 2198 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 04:43:31,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:31,328 INFO L93 Difference]: Finished difference Result 1749 states and 2375 transitions. [2024-11-14 04:43:31,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 04:43:31,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 04:43:31,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:31,334 INFO L225 Difference]: With dead ends: 1749 [2024-11-14 04:43:31,334 INFO L226 Difference]: Without dead ends: 1747 [2024-11-14 04:43:31,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 77 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 04:43:31,336 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 0 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:31,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 471 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-14 04:43:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2024-11-14 04:43:31,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1747. [2024-11-14 04:43:31,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1746 states have (on average 1.3321878579610538) internal successors, (2326), 1746 states have internal predecessors, (2326), 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 04:43:31,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2326 transitions. [2024-11-14 04:43:31,376 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2326 transitions. Word has length 81 [2024-11-14 04:43:31,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:31,376 INFO L471 AbstractCegarLoop]: Abstraction has 1747 states and 2326 transitions. [2024-11-14 04:43:31,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 04:43:31,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2326 transitions. [2024-11-14 04:43:31,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-14 04:43:31,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:31,378 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, 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 04:43:31,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 (20)] Ended with exit code 0 [2024-11-14 04:43:31,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:31,579 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:31,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:31,580 INFO L85 PathProgramCache]: Analyzing trace with hash 25959401, now seen corresponding path program 1 times [2024-11-14 04:43:31,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:31,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783795639] [2024-11-14 04:43:31,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:31,581 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 04:43:31,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:31,583 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:31,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:31,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 04:43:31,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:33,242 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:33,243 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:43:33,869 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:33,869 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:33,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783795639] [2024-11-14 04:43:33,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783795639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:43:33,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1251826383] [2024-11-14 04:43:33,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:33,870 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:43:33,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:43:33,875 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:43:33,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-14 04:43:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:34,169 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 04:43:34,172 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:35,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:43:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:35,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1251826383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:43:35,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098943277] [2024-11-14 04:43:35,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:35,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:43:35,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:43:35,426 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:43:35,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-14 04:43:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:35,593 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:43:35,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:36,696 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:36,696 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:43:37,275 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:37,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098943277] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:43:37,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:43:37,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 8, 8] total 33 [2024-11-14 04:43:37,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105405696] [2024-11-14 04:43:37,276 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:43:37,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 04:43:37,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:37,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 04:43:37,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 04:43:37,280 INFO L87 Difference]: Start difference. First operand 1747 states and 2326 transitions. Second operand has 34 states, 34 states have (on average 9.205882352941176) internal successors, (313), 33 states have internal predecessors, (313), 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 04:43:43,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:43,662 INFO L93 Difference]: Finished difference Result 6806 states and 9001 transitions. [2024-11-14 04:43:43,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-14 04:43:43,663 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.205882352941176) internal successors, (313), 33 states have internal predecessors, (313), 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 102 [2024-11-14 04:43:43,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:43,674 INFO L225 Difference]: With dead ends: 6806 [2024-11-14 04:43:43,674 INFO L226 Difference]: Without dead ends: 5564 [2024-11-14 04:43:43,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 656 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1623 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1194, Invalid=5778, Unknown=0, NotChecked=0, Total=6972 [2024-11-14 04:43:43,679 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 1721 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1721 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:43,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1721 Valid, 1010 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-14 04:43:43,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5564 states. [2024-11-14 04:43:43,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5564 to 1747. [2024-11-14 04:43:43,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1747 states, 1746 states have (on average 1.3264604810996563) internal successors, (2316), 1746 states have internal predecessors, (2316), 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 04:43:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1747 states to 1747 states and 2316 transitions. [2024-11-14 04:43:43,744 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 2316 transitions. Word has length 102 [2024-11-14 04:43:43,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:43,744 INFO L471 AbstractCegarLoop]: Abstraction has 1747 states and 2316 transitions. [2024-11-14 04:43:43,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.205882352941176) internal successors, (313), 33 states have internal predecessors, (313), 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 04:43:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 2316 transitions. [2024-11-14 04:43:43,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-14 04:43:43,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:43,746 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, 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 04:43:43,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2024-11-14 04:43:43,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-14 04:43:44,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:44,347 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:44,348 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:44,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:44,348 INFO L85 PathProgramCache]: Analyzing trace with hash 31836349, now seen corresponding path program 1 times [2024-11-14 04:43:44,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:44,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255959106] [2024-11-14 04:43:44,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:44,349 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 04:43:44,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:44,351 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:44,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 (24)] Waiting until timeout for monitored process [2024-11-14 04:43:44,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:44,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:43:44,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:45,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:43:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:45,726 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:45,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255959106] [2024-11-14 04:43:45,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255959106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:43:45,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1580772141] [2024-11-14 04:43:45,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:45,727 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:43:45,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:43:45,729 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:43:45,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-14 04:43:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:46,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:43:46,074 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:47,003 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:43:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:47,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1580772141] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:43:47,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188597071] [2024-11-14 04:43:47,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:47,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:43:47,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:43:47,264 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:43:47,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-14 04:43:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:47,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-14 04:43:47,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:48,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:48,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:43:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:48,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188597071] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:43:48,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:43:48,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 15 [2024-11-14 04:43:48,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098401629] [2024-11-14 04:43:48,568 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:43:48,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-14 04:43:48,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:48,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-14 04:43:48,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-14 04:43:48,573 INFO L87 Difference]: Start difference. First operand 1747 states and 2316 transitions. Second operand has 16 states, 16 states have (on average 12.0) internal successors, (192), 15 states have internal predecessors, (192), 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 04:43:50,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:43:50,528 INFO L93 Difference]: Finished difference Result 5916 states and 7922 transitions. [2024-11-14 04:43:50,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-14 04:43:50,528 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.0) internal successors, (192), 15 states have internal predecessors, (192), 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 103 [2024-11-14 04:43:50,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:43:50,537 INFO L225 Difference]: With dead ends: 5916 [2024-11-14 04:43:50,537 INFO L226 Difference]: Without dead ends: 4238 [2024-11-14 04:43:50,539 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=363, Invalid=1119, Unknown=0, NotChecked=0, Total=1482 [2024-11-14 04:43:50,540 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 730 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-14 04:43:50,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 587 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-14 04:43:50,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4238 states. [2024-11-14 04:43:50,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4238 to 1817. [2024-11-14 04:43:50,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1816 states have (on average 1.3149779735682818) internal successors, (2388), 1816 states have internal predecessors, (2388), 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 04:43:50,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2388 transitions. [2024-11-14 04:43:50,616 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2388 transitions. Word has length 103 [2024-11-14 04:43:50,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:43:50,617 INFO L471 AbstractCegarLoop]: Abstraction has 1817 states and 2388 transitions. [2024-11-14 04:43:50,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.0) internal successors, (192), 15 states have internal predecessors, (192), 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 04:43:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2388 transitions. [2024-11-14 04:43:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-14 04:43:50,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:43:50,620 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:43:50,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2024-11-14 04:43:50,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 (24)] Forceful destruction successful, exit code 0 [2024-11-14 04:43:51,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-14 04:43:51,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:43:51,222 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:43:51,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:43:51,223 INFO L85 PathProgramCache]: Analyzing trace with hash 15786773, now seen corresponding path program 1 times [2024-11-14 04:43:51,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:43:51,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413573310] [2024-11-14 04:43:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:51,223 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 04:43:51,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:43:51,225 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:51,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:43:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:51,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 04:43:51,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:52,770 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:52,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:43:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:53,243 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:43:53,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413573310] [2024-11-14 04:43:53,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413573310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:43:53,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [871565119] [2024-11-14 04:43:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:53,244 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:43:53,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:43:53,248 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:43:53,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-14 04:43:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:53,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 04:43:53,525 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:54,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:43:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:54,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [871565119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:43:54,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762641208] [2024-11-14 04:43:54,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:43:54,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:43:54,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:43:54,756 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:43:54,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-14 04:43:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:43:54,923 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-14 04:43:54,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:43:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:56,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:43:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:43:56,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762641208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:43:56,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:43:56,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 8, 8] total 33 [2024-11-14 04:43:56,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538926635] [2024-11-14 04:43:56,643 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:43:56,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 04:43:56,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:43:56,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 04:43:56,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2024-11-14 04:43:56,645 INFO L87 Difference]: Start difference. First operand 1817 states and 2388 transitions. Second operand has 34 states, 34 states have (on average 9.941176470588236) internal successors, (338), 33 states have internal predecessors, (338), 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 04:44:04,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:44:04,444 INFO L93 Difference]: Finished difference Result 9679 states and 12805 transitions. [2024-11-14 04:44:04,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-14 04:44:04,445 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 9.941176470588236) internal successors, (338), 33 states have internal predecessors, (338), 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 103 [2024-11-14 04:44:04,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:44:04,482 INFO L225 Difference]: With dead ends: 9679 [2024-11-14 04:44:04,482 INFO L226 Difference]: Without dead ends: 7931 [2024-11-14 04:44:04,485 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 580 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2114 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1421, Invalid=7135, Unknown=0, NotChecked=0, Total=8556 [2024-11-14 04:44:04,487 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 2464 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 1636 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2464 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-14 04:44:04,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2464 Valid, 1172 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1636 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-14 04:44:04,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7931 states. [2024-11-14 04:44:04,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7931 to 1915. [2024-11-14 04:44:04,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1914 states have (on average 1.3061650992685476) internal successors, (2500), 1914 states have internal predecessors, (2500), 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 04:44:04,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 2500 transitions. [2024-11-14 04:44:04,551 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 2500 transitions. Word has length 103 [2024-11-14 04:44:04,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:44:04,551 INFO L471 AbstractCegarLoop]: Abstraction has 1915 states and 2500 transitions. [2024-11-14 04:44:04,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 9.941176470588236) internal successors, (338), 33 states have internal predecessors, (338), 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 04:44:04,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 2500 transitions. [2024-11-14 04:44:04,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-14 04:44:04,554 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:44:04,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:44:04,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-14 04:44:04,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:44:04,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2024-11-14 04:44:05,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt [2024-11-14 04:44:05,155 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:44:05,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:44:05,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1262740939, now seen corresponding path program 1 times [2024-11-14 04:44:05,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:44:05,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087631112] [2024-11-14 04:44:05,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:44:05,156 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 04:44:05,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:44:05,160 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:44:05,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:44:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:44:05,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-14 04:44:05,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:44:06,627 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:44:06,627 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:44:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:44:07,164 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:44:07,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087631112] [2024-11-14 04:44:07,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087631112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:44:07,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1426194184] [2024-11-14 04:44:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:44:07,164 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:44:07,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:44:07,166 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:44:07,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-14 04:44:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:44:07,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-14 04:44:07,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:44:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:44:13,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:44:17,806 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:44:17,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1426194184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:44:17,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673275927] [2024-11-14 04:44:17,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:44:17,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:44:17,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:44:17,808 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:44:17,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-14 04:44:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:44:17,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 04:44:17,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:44:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:44:19,404 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:44:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:44:19,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673275927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:44:19,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:44:19,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 31, 26, 12, 11] total 81 [2024-11-14 04:44:19,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342310088] [2024-11-14 04:44:19,644 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:44:19,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-11-14 04:44:19,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:44:19,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-11-14 04:44:19,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=961, Invalid=5519, Unknown=0, NotChecked=0, Total=6480 [2024-11-14 04:44:19,648 INFO L87 Difference]: Start difference. First operand 1915 states and 2500 transitions. Second operand has 81 states, 81 states have (on average 5.0246913580246915) internal successors, (407), 81 states have internal predecessors, (407), 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 04:45:52,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 04:45:52,852 INFO L93 Difference]: Finished difference Result 52546 states and 68377 transitions. [2024-11-14 04:45:52,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 353 states. [2024-11-14 04:45:52,854 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 5.0246913580246915) internal successors, (407), 81 states have internal predecessors, (407), 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 104 [2024-11-14 04:45:52,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 04:45:52,967 INFO L225 Difference]: With dead ends: 52546 [2024-11-14 04:45:52,968 INFO L226 Difference]: Without dead ends: 50700 [2024-11-14 04:45:52,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 538 SyntacticMatches, 1 SemanticMatches, 420 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 78088 ImplicationChecksByTransitivity, 82.0s TimeCoverageRelationStatistics Valid=29825, Invalid=147837, Unknown=0, NotChecked=0, Total=177662 [2024-11-14 04:45:52,996 INFO L432 NwaCegarLoop]: 313 mSDtfsCounter, 7814 mSDsluCounter, 13038 mSDsCounter, 0 mSdLazyCounter, 9026 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7814 SdHoareTripleChecker+Valid, 13351 SdHoareTripleChecker+Invalid, 9214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 9026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2024-11-14 04:45:52,996 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7814 Valid, 13351 Invalid, 9214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [188 Valid, 9026 Invalid, 0 Unknown, 0 Unchecked, 17.0s Time] [2024-11-14 04:45:53,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50700 states. [2024-11-14 04:45:53,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50700 to 17650. [2024-11-14 04:45:53,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17650 states, 17649 states have (on average 1.3131622188225962) internal successors, (23176), 17649 states have internal predecessors, (23176), 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 04:45:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17650 states to 17650 states and 23176 transitions. [2024-11-14 04:45:53,609 INFO L78 Accepts]: Start accepts. Automaton has 17650 states and 23176 transitions. Word has length 104 [2024-11-14 04:45:53,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 04:45:53,610 INFO L471 AbstractCegarLoop]: Abstraction has 17650 states and 23176 transitions. [2024-11-14 04:45:53,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 5.0246913580246915) internal successors, (407), 81 states have internal predecessors, (407), 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 04:45:53,610 INFO L276 IsEmpty]: Start isEmpty. Operand 17650 states and 23176 transitions. [2024-11-14 04:45:53,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-14 04:45:53,616 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 04:45:53,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 04:45:53,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-14 04:45:53,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2024-11-14 04:45:54,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:45:54,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:45:54,217 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 04:45:54,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 04:45:54,218 INFO L85 PathProgramCache]: Analyzing trace with hash -969381833, now seen corresponding path program 1 times [2024-11-14 04:45:54,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2024-11-14 04:45:54,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663228688] [2024-11-14 04:45:54,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:54,218 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 04:45:54,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/mathsat [2024-11-14 04:45:54,220 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:45:54,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/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 04:45:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:54,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-14 04:45:54,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:45:55,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:55,962 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:45:57,262 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:45:57,262 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2024-11-14 04:45:57,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663228688] [2024-11-14 04:45:57,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663228688] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:45:57,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [509422645] [2024-11-14 04:45:57,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:45:57,263 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-14 04:45:57,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 [2024-11-14 04:45:57,264 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-14 04:45:57,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-14 04:45:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:45:57,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-14 04:45:57,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:46:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:46:01,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:46:04,830 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:46:04,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [509422645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:46:04,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478414859] [2024-11-14 04:46:04,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 04:46:04,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 04:46:04,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 04:46:04,832 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 04:46:04,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8692bb69-76ff-4595-825c-614be521aab7/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-14 04:46:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 04:46:04,985 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 04:46:04,986 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 04:46:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:46:07,809 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 04:46:09,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 04:46:09,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478414859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 04:46:09,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2024-11-14 04:46:09,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 24, 22, 18, 17] total 102 [2024-11-14 04:46:09,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136223338] [2024-11-14 04:46:09,916 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2024-11-14 04:46:09,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-11-14 04:46:09,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2024-11-14 04:46:09,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-11-14 04:46:09,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=9149, Unknown=0, NotChecked=0, Total=10302 [2024-11-14 04:46:09,919 INFO L87 Difference]: Start difference. First operand 17650 states and 23176 transitions. Second operand has 102 states, 102 states have (on average 5.166666666666667) internal successors, (527), 102 states have internal predecessors, (527), 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)