./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-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_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/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_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/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_e02098eb-f8c9-48e5-9b82-7183a3c37171/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 f335fc064cc60cd164eea089db3c8b8685d81b0842015215c5c6d2ca6e9ee077 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:38:29,380 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:38:29,474 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:38:29,480 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:38:29,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:38:29,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:38:29,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:38:29,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:38:29,516 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:38:29,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:38:29,516 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:38:29,516 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:38:29,516 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:38:29,516 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:38:29,516 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:38:29,517 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:38:29,517 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:38:29,517 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:38:29,518 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:38:29,518 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:38:29,518 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:38:29,519 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:38:29,519 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:38:29,519 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:38:29,519 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:38:29,519 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:38:29,519 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:38:29,519 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:38:29,519 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:38:29,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:38:29,520 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:38:29,520 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:38:29,520 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:38:29,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:38:29,520 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:38:29,520 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:38:29,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:38:29,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:38:29,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:38:29,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:38:29,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:38:29,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:38:29,521 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:38:29,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:38:29,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:38:29,521 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:38:29,521 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:38:29,521 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_e02098eb-f8c9-48e5-9b82-7183a3c37171/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 -> f335fc064cc60cd164eea089db3c8b8685d81b0842015215c5c6d2ca6e9ee077 [2024-11-14 05:38:29,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:38:29,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:38:29,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:38:29,834 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:38:29,835 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:38:29,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c Unable to find full path for "g++" [2024-11-14 05:38:31,840 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:38:32,126 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:38:32,127 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-14 05:38:32,146 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/data/ba20a2310/a45948f55c7d4f99a3114c0277990cc7/FLAG9e923b5f8 [2024-11-14 05:38:32,169 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/data/ba20a2310/a45948f55c7d4f99a3114c0277990cc7 [2024-11-14 05:38:32,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:38:32,174 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:38:32,175 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:38:32,176 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:38:32,180 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:38:32,182 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:38:32" (1/1) ... [2024-11-14 05:38:32,183 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c86ee3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:32, skipping insertion in model container [2024-11-14 05:38:32,183 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:38:32" (1/1) ... [2024-11-14 05:38:32,232 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:38:32,521 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_e02098eb-f8c9-48e5-9b82-7183a3c37171/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7347,7360] [2024-11-14 05:38:32,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:38:32,590 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:38:32,640 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_e02098eb-f8c9-48e5-9b82-7183a3c37171/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7347,7360] [2024-11-14 05:38:32,661 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:38:32,681 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:38:32,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:32 WrapperNode [2024-11-14 05:38:32,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:38:32,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:38:32,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:38:32,683 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:38:32,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:32" (1/1) ... [2024-11-14 05:38:32,706 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:32" (1/1) ... [2024-11-14 05:38:32,745 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 634 [2024-11-14 05:38:32,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:38:32,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:38:32,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:38:32,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:38:32,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:32" (1/1) ... [2024-11-14 05:38:32,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:32" (1/1) ... [2024-11-14 05:38:32,757 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:32" (1/1) ... [2024-11-14 05:38:32,758 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:32" (1/1) ... [2024-11-14 05:38:32,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:32" (1/1) ... [2024-11-14 05:38:32,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:32" (1/1) ... [2024-11-14 05:38:32,780 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:32" (1/1) ... [2024-11-14 05:38:32,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:32" (1/1) ... [2024-11-14 05:38:32,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:38:32,788 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:38:32,789 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:38:32,789 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:38:32,790 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:32" (1/1) ... [2024-11-14 05:38:32,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:38:32,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:38:32,835 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:38:32,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:38:32,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:38:32,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:38:32,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:38:32,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:38:33,043 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:38:33,045 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:38:33,936 INFO L? ?]: Removed 47 outVars from TransFormulas that were not future-live. [2024-11-14 05:38:33,936 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:38:34,473 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:38:34,473 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 05:38:34,474 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:38:34 BoogieIcfgContainer [2024-11-14 05:38:34,474 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:38:34,476 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:38:34,476 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:38:34,481 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:38:34,482 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:38:32" (1/3) ... [2024-11-14 05:38:34,483 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c6b720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:38:34, skipping insertion in model container [2024-11-14 05:38:34,483 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:38:32" (2/3) ... [2024-11-14 05:38:34,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26c6b720 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:38:34, skipping insertion in model container [2024-11-14 05:38:34,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:38:34" (3/3) ... [2024-11-14 05:38:34,486 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-14 05:38:34,507 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:38:34,508 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_floodmax.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 86 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-14 05:38:34,577 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:38:34,591 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;@4a302a97, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:38:34,592 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:38:34,598 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 84 states have (on average 1.7619047619047619) internal successors, (148), 85 states have internal predecessors, (148), 0 states have call successors, (0), 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 05:38:34,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-14 05:38:34,607 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:34,608 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] [2024-11-14 05:38:34,608 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:34,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:34,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1965802179, now seen corresponding path program 1 times [2024-11-14 05:38:34,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:34,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536328509] [2024-11-14 05:38:34,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:34,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:35,233 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 05:38:35,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:35,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536328509] [2024-11-14 05:38:35,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536328509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:35,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:35,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:38:35,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922087124] [2024-11-14 05:38:35,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:35,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:38:35,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:35,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:38:35,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:38:35,269 INFO L87 Difference]: Start difference. First operand has 86 states, 84 states have (on average 1.7619047619047619) internal successors, (148), 85 states have internal predecessors, (148), 0 states have call successors, (0), 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 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 05:38:35,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:35,408 INFO L93 Difference]: Finished difference Result 188 states and 311 transitions. [2024-11-14 05:38:35,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:38:35,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2024-11-14 05:38:35,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:35,439 INFO L225 Difference]: With dead ends: 188 [2024-11-14 05:38:35,439 INFO L226 Difference]: Without dead ends: 127 [2024-11-14 05:38:35,444 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 05:38:35,447 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 91 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:35,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 318 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:35,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-14 05:38:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2024-11-14 05:38:35,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.5) internal successors, (186), 124 states have internal predecessors, (186), 0 states have call successors, (0), 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 05:38:35,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 186 transitions. [2024-11-14 05:38:35,493 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 186 transitions. Word has length 37 [2024-11-14 05:38:35,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:35,494 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 186 transitions. [2024-11-14 05:38:35,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 05:38:35,494 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 186 transitions. [2024-11-14 05:38:35,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-14 05:38:35,497 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:35,497 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] [2024-11-14 05:38:35,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:38:35,497 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:35,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:35,498 INFO L85 PathProgramCache]: Analyzing trace with hash 938619083, now seen corresponding path program 1 times [2024-11-14 05:38:35,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:35,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558317218] [2024-11-14 05:38:35,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:35,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:35,818 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 05:38:35,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:35,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558317218] [2024-11-14 05:38:35,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558317218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:35,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:35,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:38:35,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614017657] [2024-11-14 05:38:35,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:35,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:38:35,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:35,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:38:35,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:38:35,823 INFO L87 Difference]: Start difference. First operand 125 states and 186 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 05:38:35,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:35,940 INFO L93 Difference]: Finished difference Result 276 states and 431 transitions. [2024-11-14 05:38:35,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:38:35,941 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-14 05:38:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:35,943 INFO L225 Difference]: With dead ends: 276 [2024-11-14 05:38:35,945 INFO L226 Difference]: Without dead ends: 180 [2024-11-14 05:38:35,946 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 05:38:35,947 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 81 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:35,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 192 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:35,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-14 05:38:35,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 178. [2024-11-14 05:38:35,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 1.5197740112994351) internal successors, (269), 177 states have internal predecessors, (269), 0 states have call successors, (0), 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 05:38:35,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 269 transitions. [2024-11-14 05:38:35,972 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 269 transitions. Word has length 39 [2024-11-14 05:38:35,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:35,973 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 269 transitions. [2024-11-14 05:38:35,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 05:38:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 269 transitions. [2024-11-14 05:38:35,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-14 05:38:35,974 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:35,974 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] [2024-11-14 05:38:35,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:38:35,975 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:35,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:35,975 INFO L85 PathProgramCache]: Analyzing trace with hash 2080335096, now seen corresponding path program 1 times [2024-11-14 05:38:35,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:35,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295348623] [2024-11-14 05:38:35,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:35,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:36,217 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 05:38:36,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:36,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295348623] [2024-11-14 05:38:36,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295348623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:36,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:36,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:38:36,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97007686] [2024-11-14 05:38:36,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:36,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:38:36,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:38:36,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:38:36,221 INFO L87 Difference]: Start difference. First operand 178 states and 269 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 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 05:38:36,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:36,304 INFO L93 Difference]: Finished difference Result 438 states and 690 transitions. [2024-11-14 05:38:36,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:38:36,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 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 05:38:36,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:36,308 INFO L225 Difference]: With dead ends: 438 [2024-11-14 05:38:36,308 INFO L226 Difference]: Without dead ends: 290 [2024-11-14 05:38:36,309 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 05:38:36,313 INFO L432 NwaCegarLoop]: 152 mSDtfsCounter, 82 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:36,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 242 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:36,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-14 05:38:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 288. [2024-11-14 05:38:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 1.5574912891986064) internal successors, (447), 287 states have internal predecessors, (447), 0 states have call successors, (0), 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 05:38:36,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 447 transitions. [2024-11-14 05:38:36,340 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 447 transitions. Word has length 41 [2024-11-14 05:38:36,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:36,340 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 447 transitions. [2024-11-14 05:38:36,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 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 05:38:36,341 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 447 transitions. [2024-11-14 05:38:36,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-14 05:38:36,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:36,342 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 05:38:36,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:38:36,342 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:36,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:36,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1713059214, now seen corresponding path program 1 times [2024-11-14 05:38:36,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:36,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046745367] [2024-11-14 05:38:36,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:36,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:36,544 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 05:38:36,546 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:36,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046745367] [2024-11-14 05:38:36,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046745367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:36,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:36,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:38:36,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802245403] [2024-11-14 05:38:36,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:36,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:38:36,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:36,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:38:36,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:38:36,548 INFO L87 Difference]: Start difference. First operand 288 states and 447 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:36,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:36,615 INFO L93 Difference]: Finished difference Result 707 states and 1122 transitions. [2024-11-14 05:38:36,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:38:36,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-14 05:38:36,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:36,624 INFO L225 Difference]: With dead ends: 707 [2024-11-14 05:38:36,626 INFO L226 Difference]: Without dead ends: 449 [2024-11-14 05:38:36,628 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 05:38:36,628 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 81 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:36,629 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 208 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:36,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-11-14 05:38:36,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 447. [2024-11-14 05:38:36,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 1.5717488789237668) internal successors, (701), 446 states have internal predecessors, (701), 0 states have call successors, (0), 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 05:38:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 701 transitions. [2024-11-14 05:38:36,666 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 701 transitions. Word has length 43 [2024-11-14 05:38:36,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:36,666 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 701 transitions. [2024-11-14 05:38:36,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:36,667 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 701 transitions. [2024-11-14 05:38:36,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 05:38:36,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:36,671 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 05:38:36,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 05:38:36,672 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:36,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:36,672 INFO L85 PathProgramCache]: Analyzing trace with hash -334539291, now seen corresponding path program 1 times [2024-11-14 05:38:36,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:36,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139206513] [2024-11-14 05:38:36,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:36,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:36,864 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 05:38:36,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:36,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139206513] [2024-11-14 05:38:36,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139206513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:36,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:36,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:38:36,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489910725] [2024-11-14 05:38:36,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:36,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:38:36,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:36,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:38:36,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:38:36,869 INFO L87 Difference]: Start difference. First operand 447 states and 701 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:36,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:36,944 INFO L93 Difference]: Finished difference Result 1147 states and 1834 transitions. [2024-11-14 05:38:36,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:38:36,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-11-14 05:38:36,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:36,950 INFO L225 Difference]: With dead ends: 1147 [2024-11-14 05:38:36,954 INFO L226 Difference]: Without dead ends: 743 [2024-11-14 05:38:36,955 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 05:38:36,957 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 77 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:36,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 223 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:36,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2024-11-14 05:38:36,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 741. [2024-11-14 05:38:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 1.5837837837837838) internal successors, (1172), 740 states have internal predecessors, (1172), 0 states have call successors, (0), 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 05:38:37,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1172 transitions. [2024-11-14 05:38:37,004 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1172 transitions. Word has length 45 [2024-11-14 05:38:37,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:37,005 INFO L471 AbstractCegarLoop]: Abstraction has 741 states and 1172 transitions. [2024-11-14 05:38:37,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:37,005 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1172 transitions. [2024-11-14 05:38:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-14 05:38:37,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:37,008 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] [2024-11-14 05:38:37,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 05:38:37,008 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:37,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:37,009 INFO L85 PathProgramCache]: Analyzing trace with hash -312170093, now seen corresponding path program 1 times [2024-11-14 05:38:37,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:37,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368196031] [2024-11-14 05:38:37,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:37,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:37,167 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 05:38:37,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:37,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368196031] [2024-11-14 05:38:37,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368196031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:37,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:37,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:38:37,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596436162] [2024-11-14 05:38:37,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:37,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:38:37,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:37,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:38:37,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:38:37,171 INFO L87 Difference]: Start difference. First operand 741 states and 1172 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 05:38:37,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:37,242 INFO L93 Difference]: Finished difference Result 1856 states and 2966 transitions. [2024-11-14 05:38:37,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:38:37,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2024-11-14 05:38:37,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:37,253 INFO L225 Difference]: With dead ends: 1856 [2024-11-14 05:38:37,253 INFO L226 Difference]: Without dead ends: 1158 [2024-11-14 05:38:37,254 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 05:38:37,255 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 76 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:37,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 210 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2024-11-14 05:38:37,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1156. [2024-11-14 05:38:37,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.587012987012987) internal successors, (1833), 1155 states have internal predecessors, (1833), 0 states have call successors, (0), 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 05:38:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1833 transitions. [2024-11-14 05:38:37,301 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1833 transitions. Word has length 47 [2024-11-14 05:38:37,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:37,302 INFO L471 AbstractCegarLoop]: Abstraction has 1156 states and 1833 transitions. [2024-11-14 05:38:37,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 0 states have call successors, (0), 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 05:38:37,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1833 transitions. [2024-11-14 05:38:37,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 05:38:37,305 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:37,305 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 05:38:37,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 05:38:37,306 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:37,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1501020928, now seen corresponding path program 1 times [2024-11-14 05:38:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:37,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559719239] [2024-11-14 05:38:37,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:37,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:37,561 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 05:38:37,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:37,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559719239] [2024-11-14 05:38:37,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559719239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:37,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:37,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:38:37,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066655331] [2024-11-14 05:38:37,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:37,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:38:37,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:37,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:38:37,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:38:37,565 INFO L87 Difference]: Start difference. First operand 1156 states and 1833 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 05:38:37,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:37,918 INFO L93 Difference]: Finished difference Result 2931 states and 4669 transitions. [2024-11-14 05:38:37,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:38:37,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 05:38:37,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:37,927 INFO L225 Difference]: With dead ends: 2931 [2024-11-14 05:38:37,928 INFO L226 Difference]: Without dead ends: 1831 [2024-11-14 05:38:37,929 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:38:37,930 INFO L432 NwaCegarLoop]: 116 mSDtfsCounter, 459 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:37,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 806 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:38:37,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2024-11-14 05:38:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1821. [2024-11-14 05:38:38,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 1.5785714285714285) internal successors, (2873), 1820 states have internal predecessors, (2873), 0 states have call successors, (0), 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 05:38:38,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2873 transitions. [2024-11-14 05:38:38,013 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2873 transitions. Word has length 49 [2024-11-14 05:38:38,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:38,014 INFO L471 AbstractCegarLoop]: Abstraction has 1821 states and 2873 transitions. [2024-11-14 05:38:38,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 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 05:38:38,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2873 transitions. [2024-11-14 05:38:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-14 05:38:38,017 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:38,017 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 05:38:38,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 05:38:38,017 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:38,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:38,018 INFO L85 PathProgramCache]: Analyzing trace with hash 650487300, now seen corresponding path program 1 times [2024-11-14 05:38:38,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:38,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331491698] [2024-11-14 05:38:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:38,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:38,177 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 05:38:38,178 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:38,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331491698] [2024-11-14 05:38:38,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331491698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:38,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:38,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:38:38,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245786730] [2024-11-14 05:38:38,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:38,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:38:38,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:38:38,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:38:38,179 INFO L87 Difference]: Start difference. First operand 1821 states and 2873 transitions. Second operand has 4 states, 4 states have (on average 12.5) 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 05:38:38,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:38,307 INFO L93 Difference]: Finished difference Result 3588 states and 5679 transitions. [2024-11-14 05:38:38,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:38:38,308 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) 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 05:38:38,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:38,314 INFO L225 Difference]: With dead ends: 3588 [2024-11-14 05:38:38,315 INFO L226 Difference]: Without dead ends: 1823 [2024-11-14 05:38:38,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:38:38,317 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 152 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:38,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 299 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:38,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2024-11-14 05:38:38,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1821. [2024-11-14 05:38:38,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 1.571978021978022) internal successors, (2861), 1820 states have internal predecessors, (2861), 0 states have call successors, (0), 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 05:38:38,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2861 transitions. [2024-11-14 05:38:38,373 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2861 transitions. Word has length 50 [2024-11-14 05:38:38,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:38,373 INFO L471 AbstractCegarLoop]: Abstraction has 1821 states and 2861 transitions. [2024-11-14 05:38:38,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) 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 05:38:38,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2861 transitions. [2024-11-14 05:38:38,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 05:38:38,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:38,374 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 05:38:38,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 05:38:38,374 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:38,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:38,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1367676345, now seen corresponding path program 1 times [2024-11-14 05:38:38,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:38,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954929093] [2024-11-14 05:38:38,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:38,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:38,530 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 05:38:38,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:38,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954929093] [2024-11-14 05:38:38,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954929093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:38,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:38,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:38:38,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397674417] [2024-11-14 05:38:38,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:38,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:38:38,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:38,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:38:38,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:38:38,532 INFO L87 Difference]: Start difference. First operand 1821 states and 2861 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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 05:38:38,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:38,670 INFO L93 Difference]: Finished difference Result 3588 states and 5655 transitions. [2024-11-14 05:38:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:38:38,671 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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 05:38:38,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:38,678 INFO L225 Difference]: With dead ends: 3588 [2024-11-14 05:38:38,679 INFO L226 Difference]: Without dead ends: 1823 [2024-11-14 05:38:38,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:38:38,682 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 160 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:38,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 305 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:38,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2024-11-14 05:38:38,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1821. [2024-11-14 05:38:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 1.5653846153846154) internal successors, (2849), 1820 states have internal predecessors, (2849), 0 states have call successors, (0), 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 05:38:38,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2849 transitions. [2024-11-14 05:38:38,734 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2849 transitions. Word has length 51 [2024-11-14 05:38:38,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:38,734 INFO L471 AbstractCegarLoop]: Abstraction has 1821 states and 2849 transitions. [2024-11-14 05:38:38,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 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 05:38:38,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2849 transitions. [2024-11-14 05:38:38,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-14 05:38:38,735 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:38,735 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 05:38:38,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 05:38:38,736 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:38,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash 498318123, now seen corresponding path program 1 times [2024-11-14 05:38:38,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:38,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720189982] [2024-11-14 05:38:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:38,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:38,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:38,904 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 05:38:38,904 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:38,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720189982] [2024-11-14 05:38:38,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720189982] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:38,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:38,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:38:38,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712178641] [2024-11-14 05:38:38,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:38,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:38:38,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:38,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:38:38,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:38:38,905 INFO L87 Difference]: Start difference. First operand 1821 states and 2849 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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 05:38:39,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:39,037 INFO L93 Difference]: Finished difference Result 3588 states and 5631 transitions. [2024-11-14 05:38:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:38:39,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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 05:38:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:39,045 INFO L225 Difference]: With dead ends: 3588 [2024-11-14 05:38:39,046 INFO L226 Difference]: Without dead ends: 1823 [2024-11-14 05:38:39,048 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:38:39,048 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 158 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:39,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 308 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2024-11-14 05:38:39,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1821. [2024-11-14 05:38:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 1.5587912087912088) internal successors, (2837), 1820 states have internal predecessors, (2837), 0 states have call successors, (0), 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 05:38:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2837 transitions. [2024-11-14 05:38:39,102 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2837 transitions. Word has length 52 [2024-11-14 05:38:39,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:39,103 INFO L471 AbstractCegarLoop]: Abstraction has 1821 states and 2837 transitions. [2024-11-14 05:38:39,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 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 05:38:39,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2837 transitions. [2024-11-14 05:38:39,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-14 05:38:39,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:39,105 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 05:38:39,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 05:38:39,105 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:39,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:39,106 INFO L85 PathProgramCache]: Analyzing trace with hash 625035068, now seen corresponding path program 1 times [2024-11-14 05:38:39,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:39,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629208330] [2024-11-14 05:38:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:39,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:39,449 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 05:38:39,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:39,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629208330] [2024-11-14 05:38:39,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629208330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:39,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:39,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:38:39,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291522335] [2024-11-14 05:38:39,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:39,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:38:39,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:39,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:38:39,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:38:39,451 INFO L87 Difference]: Start difference. First operand 1821 states and 2837 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 05:38:39,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:39,649 INFO L93 Difference]: Finished difference Result 3588 states and 5607 transitions. [2024-11-14 05:38:39,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:38:39,650 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 05:38:39,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:39,658 INFO L225 Difference]: With dead ends: 3588 [2024-11-14 05:38:39,658 INFO L226 Difference]: Without dead ends: 1823 [2024-11-14 05:38:39,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 05:38:39,661 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 187 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:39,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 294 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:39,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2024-11-14 05:38:39,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 1821. [2024-11-14 05:38:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 1.5543956043956044) internal successors, (2829), 1820 states have internal predecessors, (2829), 0 states have call successors, (0), 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 05:38:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 2829 transitions. [2024-11-14 05:38:39,728 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 2829 transitions. Word has length 54 [2024-11-14 05:38:39,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:39,728 INFO L471 AbstractCegarLoop]: Abstraction has 1821 states and 2829 transitions. [2024-11-14 05:38:39,729 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 05:38:39,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 2829 transitions. [2024-11-14 05:38:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 05:38:39,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:39,730 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 05:38:39,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-14 05:38:39,730 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:39,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:39,731 INFO L85 PathProgramCache]: Analyzing trace with hash -312065607, now seen corresponding path program 1 times [2024-11-14 05:38:39,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:39,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951074395] [2024-11-14 05:38:39,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:39,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:40,048 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 05:38:40,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:40,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951074395] [2024-11-14 05:38:40,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951074395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:40,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:40,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:38:40,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443907847] [2024-11-14 05:38:40,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:40,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:38:40,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:40,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:38:40,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:38:40,051 INFO L87 Difference]: Start difference. First operand 1821 states and 2829 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 05:38:40,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:40,250 INFO L93 Difference]: Finished difference Result 4565 states and 7090 transitions. [2024-11-14 05:38:40,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:38:40,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 05:38:40,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:40,261 INFO L225 Difference]: With dead ends: 4565 [2024-11-14 05:38:40,262 INFO L226 Difference]: Without dead ends: 2800 [2024-11-14 05:38:40,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 05:38:40,266 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 62 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:40,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 411 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:40,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2800 states. [2024-11-14 05:38:40,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2798. [2024-11-14 05:38:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 1.543081873435824) internal successors, (4316), 2797 states have internal predecessors, (4316), 0 states have call successors, (0), 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 05:38:40,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 4316 transitions. [2024-11-14 05:38:40,344 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 4316 transitions. Word has length 57 [2024-11-14 05:38:40,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:40,345 INFO L471 AbstractCegarLoop]: Abstraction has 2798 states and 4316 transitions. [2024-11-14 05:38:40,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 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 05:38:40,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 4316 transitions. [2024-11-14 05:38:40,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-14 05:38:40,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:40,346 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 05:38:40,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-14 05:38:40,346 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:40,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:40,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1074181492, now seen corresponding path program 1 times [2024-11-14 05:38:40,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:40,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031659185] [2024-11-14 05:38:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:40,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:41,270 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 05:38:41,270 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:41,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031659185] [2024-11-14 05:38:41,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031659185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:41,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:41,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:38:41,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834191238] [2024-11-14 05:38:41,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:41,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:38:41,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:41,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:38:41,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:38:41,273 INFO L87 Difference]: Start difference. First operand 2798 states and 4316 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 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 05:38:41,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:41,357 INFO L93 Difference]: Finished difference Result 8145 states and 12606 transitions. [2024-11-14 05:38:41,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:38:41,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 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 05:38:41,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:41,379 INFO L225 Difference]: With dead ends: 8145 [2024-11-14 05:38:41,379 INFO L226 Difference]: Without dead ends: 5403 [2024-11-14 05:38:41,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 05:38:41,384 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 343 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:41,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 239 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:41,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5403 states. [2024-11-14 05:38:41,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5403 to 5401. [2024-11-14 05:38:41,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5401 states, 5400 states have (on average 1.540925925925926) internal successors, (8321), 5400 states have internal predecessors, (8321), 0 states have call successors, (0), 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 05:38:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 8321 transitions. [2024-11-14 05:38:41,547 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 8321 transitions. Word has length 58 [2024-11-14 05:38:41,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:41,547 INFO L471 AbstractCegarLoop]: Abstraction has 5401 states and 8321 transitions. [2024-11-14 05:38:41,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 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 05:38:41,548 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 8321 transitions. [2024-11-14 05:38:41,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-14 05:38:41,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:41,549 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 05:38:41,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 05:38:41,550 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:41,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:41,550 INFO L85 PathProgramCache]: Analyzing trace with hash -12364666, now seen corresponding path program 1 times [2024-11-14 05:38:41,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:41,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355257623] [2024-11-14 05:38:41,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:41,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:41,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:42,146 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 05:38:42,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:42,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355257623] [2024-11-14 05:38:42,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355257623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:42,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:42,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 05:38:42,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069186353] [2024-11-14 05:38:42,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:42,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:38:42,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:42,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:38:42,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:38:42,148 INFO L87 Difference]: Start difference. First operand 5401 states and 8321 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 05:38:42,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:42,368 INFO L93 Difference]: Finished difference Result 5417 states and 8341 transitions. [2024-11-14 05:38:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:38:42,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 05:38:42,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:42,391 INFO L225 Difference]: With dead ends: 5417 [2024-11-14 05:38:42,392 INFO L226 Difference]: Without dead ends: 5415 [2024-11-14 05:38:42,393 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:38:42,394 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 55 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:42,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 522 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:38:42,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5415 states. [2024-11-14 05:38:42,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5415 to 5413. [2024-11-14 05:38:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5413 states, 5412 states have (on average 1.537509238728751) internal successors, (8321), 5412 states have internal predecessors, (8321), 0 states have call successors, (0), 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 05:38:42,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5413 states to 5413 states and 8321 transitions. [2024-11-14 05:38:42,556 INFO L78 Accepts]: Start accepts. Automaton has 5413 states and 8321 transitions. Word has length 61 [2024-11-14 05:38:42,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:42,556 INFO L471 AbstractCegarLoop]: Abstraction has 5413 states and 8321 transitions. [2024-11-14 05:38:42,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 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 05:38:42,559 INFO L276 IsEmpty]: Start isEmpty. Operand 5413 states and 8321 transitions. [2024-11-14 05:38:42,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-14 05:38:42,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:42,563 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-14 05:38:42,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-14 05:38:42,563 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:42,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:42,564 INFO L85 PathProgramCache]: Analyzing trace with hash -935933266, now seen corresponding path program 1 times [2024-11-14 05:38:42,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:42,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177469090] [2024-11-14 05:38:42,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:42,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:43,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:38:43,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:43,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177469090] [2024-11-14 05:38:43,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177469090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:43,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:43,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:38:43,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87378338] [2024-11-14 05:38:43,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:43,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:38:43,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:43,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:38:43,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:38:43,788 INFO L87 Difference]: Start difference. First operand 5413 states and 8321 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:43,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:43,919 INFO L93 Difference]: Finished difference Result 15670 states and 24139 transitions. [2024-11-14 05:38:43,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:38:43,920 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-14 05:38:43,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:43,960 INFO L225 Difference]: With dead ends: 15670 [2024-11-14 05:38:43,961 INFO L226 Difference]: Without dead ends: 10298 [2024-11-14 05:38:43,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 05:38:43,972 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 403 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:43,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 220 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10298 states. [2024-11-14 05:38:44,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10298 to 10296. [2024-11-14 05:38:44,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10296 states, 10295 states have (on average 1.5289946576007771) internal successors, (15741), 10295 states have internal predecessors, (15741), 0 states have call successors, (0), 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 05:38:44,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10296 states to 10296 states and 15741 transitions. [2024-11-14 05:38:44,243 INFO L78 Accepts]: Start accepts. Automaton has 10296 states and 15741 transitions. Word has length 68 [2024-11-14 05:38:44,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:44,243 INFO L471 AbstractCegarLoop]: Abstraction has 10296 states and 15741 transitions. [2024-11-14 05:38:44,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:38:44,244 INFO L276 IsEmpty]: Start isEmpty. Operand 10296 states and 15741 transitions. [2024-11-14 05:38:44,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-14 05:38:44,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:44,245 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:38:44,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-14 05:38:44,246 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:44,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:44,247 INFO L85 PathProgramCache]: Analyzing trace with hash 518131921, now seen corresponding path program 1 times [2024-11-14 05:38:44,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:44,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800177723] [2024-11-14 05:38:44,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:44,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:44,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 05:38:44,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:44,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800177723] [2024-11-14 05:38:44,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800177723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:44,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:44,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:38:44,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378028442] [2024-11-14 05:38:44,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:44,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:38:44,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:44,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:38:44,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:38:44,435 INFO L87 Difference]: Start difference. First operand 10296 states and 15741 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 05:38:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:44,601 INFO L93 Difference]: Finished difference Result 20557 states and 31444 transitions. [2024-11-14 05:38:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:38:44,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 71 [2024-11-14 05:38:44,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:44,633 INFO L225 Difference]: With dead ends: 20557 [2024-11-14 05:38:44,633 INFO L226 Difference]: Without dead ends: 10296 [2024-11-14 05:38:44,646 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 05:38:44,646 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 294 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:44,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 102 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:44,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10296 states. [2024-11-14 05:38:44,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10296 to 10296. [2024-11-14 05:38:44,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10296 states, 10295 states have (on average 1.4932491500728509) internal successors, (15373), 10295 states have internal predecessors, (15373), 0 states have call successors, (0), 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 05:38:44,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10296 states to 10296 states and 15373 transitions. [2024-11-14 05:38:44,839 INFO L78 Accepts]: Start accepts. Automaton has 10296 states and 15373 transitions. Word has length 71 [2024-11-14 05:38:44,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:44,839 INFO L471 AbstractCegarLoop]: Abstraction has 10296 states and 15373 transitions. [2024-11-14 05:38:44,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 05:38:44,840 INFO L276 IsEmpty]: Start isEmpty. Operand 10296 states and 15373 transitions. [2024-11-14 05:38:44,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-14 05:38:44,841 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:44,841 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:38:44,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-14 05:38:44,841 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:44,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:44,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1871609674, now seen corresponding path program 1 times [2024-11-14 05:38:44,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:44,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008984053] [2024-11-14 05:38:44,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:44,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:44,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 05:38:45,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:45,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008984053] [2024-11-14 05:38:45,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008984053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:45,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:45,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:38:45,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028118320] [2024-11-14 05:38:45,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:45,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:38:45,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:45,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:38:45,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:38:45,793 INFO L87 Difference]: Start difference. First operand 10296 states and 15373 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 05:38:45,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:45,943 INFO L93 Difference]: Finished difference Result 29988 states and 44807 transitions. [2024-11-14 05:38:45,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:38:45,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 71 [2024-11-14 05:38:45,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:45,991 INFO L225 Difference]: With dead ends: 29988 [2024-11-14 05:38:45,991 INFO L226 Difference]: Without dead ends: 19774 [2024-11-14 05:38:46,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:38:46,005 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 172 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:46,005 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 429 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:46,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19774 states. [2024-11-14 05:38:46,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19774 to 19772. [2024-11-14 05:38:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19772 states, 19771 states have (on average 1.4845480754640634) internal successors, (29351), 19771 states have internal predecessors, (29351), 0 states have call successors, (0), 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 05:38:46,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19772 states to 19772 states and 29351 transitions. [2024-11-14 05:38:46,502 INFO L78 Accepts]: Start accepts. Automaton has 19772 states and 29351 transitions. Word has length 71 [2024-11-14 05:38:46,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:46,502 INFO L471 AbstractCegarLoop]: Abstraction has 19772 states and 29351 transitions. [2024-11-14 05:38:46,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 05:38:46,503 INFO L276 IsEmpty]: Start isEmpty. Operand 19772 states and 29351 transitions. [2024-11-14 05:38:46,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-14 05:38:46,505 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:46,505 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:38:46,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-14 05:38:46,506 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:46,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:46,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1537956788, now seen corresponding path program 1 times [2024-11-14 05:38:46,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:46,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383349727] [2024-11-14 05:38:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:46,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:47,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:38:47,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:47,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383349727] [2024-11-14 05:38:47,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383349727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:47,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:47,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:38:47,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038122753] [2024-11-14 05:38:47,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:47,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:38:47,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:47,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:38:47,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:38:47,546 INFO L87 Difference]: Start difference. First operand 19772 states and 29351 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 05:38:47,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:47,728 INFO L93 Difference]: Finished difference Result 49016 states and 72721 transitions. [2024-11-14 05:38:47,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:38:47,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 71 [2024-11-14 05:38:47,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:47,809 INFO L225 Difference]: With dead ends: 49016 [2024-11-14 05:38:47,809 INFO L226 Difference]: Without dead ends: 29334 [2024-11-14 05:38:47,829 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 05:38:47,829 INFO L432 NwaCegarLoop]: 181 mSDtfsCounter, 223 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:47,830 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 281 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:47,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29334 states. [2024-11-14 05:38:48,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29334 to 29332. [2024-11-14 05:38:48,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29332 states, 29331 states have (on average 1.4725375882172445) internal successors, (43191), 29331 states have internal predecessors, (43191), 0 states have call successors, (0), 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 05:38:48,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29332 states to 29332 states and 43191 transitions. [2024-11-14 05:38:48,373 INFO L78 Accepts]: Start accepts. Automaton has 29332 states and 43191 transitions. Word has length 71 [2024-11-14 05:38:48,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:48,374 INFO L471 AbstractCegarLoop]: Abstraction has 29332 states and 43191 transitions. [2024-11-14 05:38:48,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 05:38:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand 29332 states and 43191 transitions. [2024-11-14 05:38:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-14 05:38:48,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:48,376 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:38:48,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-14 05:38:48,377 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:48,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:48,377 INFO L85 PathProgramCache]: Analyzing trace with hash -340140967, now seen corresponding path program 1 times [2024-11-14 05:38:48,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:48,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383818739] [2024-11-14 05:38:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:48,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-14 05:38:48,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:48,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383818739] [2024-11-14 05:38:48,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383818739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:48,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:48,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:38:48,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219181753] [2024-11-14 05:38:48,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:48,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:38:48,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:48,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:38:48,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:38:48,552 INFO L87 Difference]: Start difference. First operand 29332 states and 43191 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 05:38:48,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:48,888 INFO L93 Difference]: Finished difference Result 58604 states and 86308 transitions. [2024-11-14 05:38:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:38:48,889 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 74 [2024-11-14 05:38:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:48,972 INFO L225 Difference]: With dead ends: 58604 [2024-11-14 05:38:48,972 INFO L226 Difference]: Without dead ends: 29332 [2024-11-14 05:38:48,993 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 05:38:48,994 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 278 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:48,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 104 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:38:49,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29332 states. [2024-11-14 05:38:49,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29332 to 29332. [2024-11-14 05:38:49,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29332 states, 29331 states have (on average 1.4441035082336096) internal successors, (42357), 29331 states have internal predecessors, (42357), 0 states have call successors, (0), 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 05:38:49,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29332 states to 29332 states and 42357 transitions. [2024-11-14 05:38:49,639 INFO L78 Accepts]: Start accepts. Automaton has 29332 states and 42357 transitions. Word has length 74 [2024-11-14 05:38:49,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:49,640 INFO L471 AbstractCegarLoop]: Abstraction has 29332 states and 42357 transitions. [2024-11-14 05:38:49,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 05:38:49,640 INFO L276 IsEmpty]: Start isEmpty. Operand 29332 states and 42357 transitions. [2024-11-14 05:38:49,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-14 05:38:49,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:49,643 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:38:49,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-14 05:38:49,643 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:49,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:49,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1178816852, now seen corresponding path program 1 times [2024-11-14 05:38:49,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:49,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031392410] [2024-11-14 05:38:49,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:49,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:38:50,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:50,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031392410] [2024-11-14 05:38:50,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031392410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:38:50,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:38:50,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:38:50,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295951743] [2024-11-14 05:38:50,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:38:50,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:38:50,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:38:50,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:38:50,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:38:50,784 INFO L87 Difference]: Start difference. First operand 29332 states and 42357 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 05:38:51,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:38:51,013 INFO L93 Difference]: Finished difference Result 43732 states and 62810 transitions. [2024-11-14 05:38:51,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:38:51,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 74 [2024-11-14 05:38:51,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:38:51,101 INFO L225 Difference]: With dead ends: 43732 [2024-11-14 05:38:51,101 INFO L226 Difference]: Without dead ends: 33402 [2024-11-14 05:38:51,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:38:51,117 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 219 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:38:51,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 492 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:38:51,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33402 states. [2024-11-14 05:38:51,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33402 to 29360. [2024-11-14 05:38:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29360 states, 29359 states have (on average 1.4438843284853027) internal successors, (42391), 29359 states have internal predecessors, (42391), 0 states have call successors, (0), 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 05:38:51,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29360 states to 29360 states and 42391 transitions. [2024-11-14 05:38:51,701 INFO L78 Accepts]: Start accepts. Automaton has 29360 states and 42391 transitions. Word has length 74 [2024-11-14 05:38:51,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:38:51,702 INFO L471 AbstractCegarLoop]: Abstraction has 29360 states and 42391 transitions. [2024-11-14 05:38:51,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 05:38:51,702 INFO L276 IsEmpty]: Start isEmpty. Operand 29360 states and 42391 transitions. [2024-11-14 05:38:51,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-14 05:38:51,706 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:38:51,706 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:38:51,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-14 05:38:51,707 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:38:51,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:38:51,707 INFO L85 PathProgramCache]: Analyzing trace with hash 420963156, now seen corresponding path program 1 times [2024-11-14 05:38:51,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:38:51,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897013069] [2024-11-14 05:38:51,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:51,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:38:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:52,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:38:52,739 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:38:52,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897013069] [2024-11-14 05:38:52,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897013069] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:38:52,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053222586] [2024-11-14 05:38:52,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:38:52,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:38:52,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:38:52,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:38:52,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:38:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:38:52,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 05:38:53,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:38:55,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:38:55,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:38:59,601 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:38:59,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053222586] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:38:59,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [95280082] [2024-11-14 05:38:59,644 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2024-11-14 05:38:59,645 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:38:59,649 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:38:59,655 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:38:59,656 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:39:23,416 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:39:46,557 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '412305#(and (exists ((|v_ULTIMATE.start_main_~assert__arg~0#1_123| Int)) (and (= (mod |v_ULTIMATE.start_main_~assert__arg~0#1_123| 256) 0) (<= |v_ULTIMATE.start_main_~assert__arg~0#1_123| 1))) (<= 0 ~mode3~0) (<= ~mode3~0 1) (<= ~__return_1921~0 1))' at error location [2024-11-14 05:39:46,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:39:46,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:39:46,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 14] total 32 [2024-11-14 05:39:46,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133397597] [2024-11-14 05:39:46,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:39:46,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-14 05:39:46,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:39:46,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-14 05:39:46,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=6690, Unknown=0, NotChecked=0, Total=7482 [2024-11-14 05:39:46,561 INFO L87 Difference]: Start difference. First operand 29360 states and 42391 transitions. Second operand has 32 states, 32 states have (on average 6.46875) internal successors, (207), 32 states have internal predecessors, (207), 0 states have call successors, (0), 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 05:40:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:40:04,723 INFO L93 Difference]: Finished difference Result 343052 states and 501995 transitions. [2024-11-14 05:40:04,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-14 05:40:04,723 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.46875) internal successors, (207), 32 states have internal predecessors, (207), 0 states have call successors, (0), 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 74 [2024-11-14 05:40:04,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:40:05,347 INFO L225 Difference]: With dead ends: 343052 [2024-11-14 05:40:05,347 INFO L226 Difference]: Without dead ends: 314362 [2024-11-14 05:40:05,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 138 SyntacticMatches, 7 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16505 ImplicationChecksByTransitivity, 34.3s TimeCoverageRelationStatistics Valid=4951, Invalid=32879, Unknown=0, NotChecked=0, Total=37830 [2024-11-14 05:40:05,437 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 5714 mSDsluCounter, 11694 mSDsCounter, 0 mSdLazyCounter, 5059 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5714 SdHoareTripleChecker+Valid, 11833 SdHoareTripleChecker+Invalid, 5276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 5059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-14 05:40:05,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5714 Valid, 11833 Invalid, 5276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [217 Valid, 5059 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-14 05:40:05,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314362 states. [2024-11-14 05:40:08,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314362 to 177348. [2024-11-14 05:40:08,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177348 states, 177347 states have (on average 1.4438304566753315) internal successors, (256059), 177347 states have internal predecessors, (256059), 0 states have call successors, (0), 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 05:40:09,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177348 states to 177348 states and 256059 transitions. [2024-11-14 05:40:09,828 INFO L78 Accepts]: Start accepts. Automaton has 177348 states and 256059 transitions. Word has length 74 [2024-11-14 05:40:09,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:40:09,828 INFO L471 AbstractCegarLoop]: Abstraction has 177348 states and 256059 transitions. [2024-11-14 05:40:09,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.46875) internal successors, (207), 32 states have internal predecessors, (207), 0 states have call successors, (0), 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 05:40:09,829 INFO L276 IsEmpty]: Start isEmpty. Operand 177348 states and 256059 transitions. [2024-11-14 05:40:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-14 05:40:09,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:40:09,832 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:40:09,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:40:10,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-14 05:40:10,036 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:40:10,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:40:10,038 INFO L85 PathProgramCache]: Analyzing trace with hash 102451760, now seen corresponding path program 1 times [2024-11-14 05:40:10,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:40:10,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239418888] [2024-11-14 05:40:10,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:10,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:40:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:40:10,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:40:10,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239418888] [2024-11-14 05:40:10,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239418888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:40:10,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711560451] [2024-11-14 05:40:10,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:10,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:40:10,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:40:10,801 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:40:10,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:40:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:11,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:40:11,232 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:40:11,941 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:12,144 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:40:12,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711560451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:40:12,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [79545360] [2024-11-14 05:40:12,147 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2024-11-14 05:40:12,147 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:40:12,148 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:40:12,148 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:40:12,148 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:40:21,496 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:40:37,802 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '933426#(and (exists ((|v_ULTIMATE.start_main_~__tmp_1~0#1_5| Int) (|v_ULTIMATE.start_main_~assert__arg~0#1_136| Int)) (and (= |v_ULTIMATE.start_main_~assert__arg~0#1_136| 0) (= |v_ULTIMATE.start_main_~__tmp_1~0#1_5| 0) (= ~__return_1921~0 0))) (<= ~mode2~0 1) (<= 0 ~mode2~0))' at error location [2024-11-14 05:40:37,802 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:40:37,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:40:37,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-14 05:40:37,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817997917] [2024-11-14 05:40:37,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:40:37,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:40:37,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:40:37,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:40:37,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=501, Invalid=3159, Unknown=0, NotChecked=0, Total=3660 [2024-11-14 05:40:37,804 INFO L87 Difference]: Start difference. First operand 177348 states and 256059 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 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 05:40:38,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:40:38,603 INFO L93 Difference]: Finished difference Result 381128 states and 555167 transitions. [2024-11-14 05:40:38,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:40:38,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 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 75 [2024-11-14 05:40:38,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:40:39,015 INFO L225 Difference]: With dead ends: 381128 [2024-11-14 05:40:39,015 INFO L226 Difference]: Without dead ends: 257370 [2024-11-14 05:40:39,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 160 SyntacticMatches, 9 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1313 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=501, Invalid=3159, Unknown=0, NotChecked=0, Total=3660 [2024-11-14 05:40:39,135 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 373 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:40:39,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 348 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:40:39,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257370 states. [2024-11-14 05:40:42,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257370 to 200692. [2024-11-14 05:40:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200692 states, 200691 states have (on average 1.4308912706598702) internal successors, (287167), 200691 states have internal predecessors, (287167), 0 states have call successors, (0), 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 05:40:43,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200692 states to 200692 states and 287167 transitions. [2024-11-14 05:40:43,276 INFO L78 Accepts]: Start accepts. Automaton has 200692 states and 287167 transitions. Word has length 75 [2024-11-14 05:40:43,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:40:43,277 INFO L471 AbstractCegarLoop]: Abstraction has 200692 states and 287167 transitions. [2024-11-14 05:40:43,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 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 05:40:43,277 INFO L276 IsEmpty]: Start isEmpty. Operand 200692 states and 287167 transitions. [2024-11-14 05:40:43,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-14 05:40:43,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:40:43,283 INFO L215 NwaCegarLoop]: trace histogram [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 05:40:43,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 05:40:43,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-14 05:40:43,484 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:40:43,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:40:43,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1176908901, now seen corresponding path program 1 times [2024-11-14 05:40:43,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:40:43,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493758182] [2024-11-14 05:40:43,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:43,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:40:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:43,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:40:43,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:40:43,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493758182] [2024-11-14 05:40:43,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493758182] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:40:43,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432912619] [2024-11-14 05:40:43,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:40:43,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:40:43,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:40:43,763 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:40:43,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:40:43,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:40:43,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:40:43,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:40:44,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:40:44,436 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:40:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:40:44,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432912619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:40:44,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [759409772] [2024-11-14 05:40:44,806 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2024-11-14 05:40:44,808 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:40:44,809 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:40:44,809 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:40:44,809 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:40:55,457 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:41:09,662 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1515757#(and (<= (+ ~nl1~0 ~st1~0) 1) (exists ((|v_ULTIMATE.start_main_~assert__arg~0#1_150| Int) (|v_ULTIMATE.start_main_~__tmp_1~0#1_5| Int)) (and (= |v_ULTIMATE.start_main_~__tmp_1~0#1_5| 0) (= ~__return_1921~0 0) (= |v_ULTIMATE.start_main_~assert__arg~0#1_150| 0))) (<= 0 ~mode3~0) (<= ~mode2~0 1) (<= ~mode3~0 1) (<= 2 (+ ~nl2~0 ~st2~0)) (<= 0 ~mode2~0))' at error location [2024-11-14 05:41:09,663 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:41:09,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:41:09,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-14 05:41:09,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102381891] [2024-11-14 05:41:09,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:41:09,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:41:09,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:41:09,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:41:09,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=3257, Unknown=0, NotChecked=0, Total=3782 [2024-11-14 05:41:09,665 INFO L87 Difference]: Start difference. First operand 200692 states and 287167 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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 05:41:10,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:41:10,791 INFO L93 Difference]: Finished difference Result 449940 states and 646755 transitions. [2024-11-14 05:41:10,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:41:10,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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) Word has length 76 [2024-11-14 05:41:10,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:41:11,722 INFO L225 Difference]: With dead ends: 449940 [2024-11-14 05:41:11,722 INFO L226 Difference]: Without dead ends: 308146 [2024-11-14 05:41:12,033 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 163 SyntacticMatches, 8 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=525, Invalid=3257, Unknown=0, NotChecked=0, Total=3782 [2024-11-14 05:41:12,034 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 230 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:41:12,034 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 512 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:41:12,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308146 states. [2024-11-14 05:41:17,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308146 to 242964. [2024-11-14 05:41:17,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242964 states, 242963 states have (on average 1.4211505455563194) internal successors, (345287), 242963 states have internal predecessors, (345287), 0 states have call successors, (0), 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 05:41:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242964 states to 242964 states and 345287 transitions. [2024-11-14 05:41:18,765 INFO L78 Accepts]: Start accepts. Automaton has 242964 states and 345287 transitions. Word has length 76 [2024-11-14 05:41:18,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:41:18,765 INFO L471 AbstractCegarLoop]: Abstraction has 242964 states and 345287 transitions. [2024-11-14 05:41:18,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 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 05:41:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand 242964 states and 345287 transitions. [2024-11-14 05:41:18,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-14 05:41:18,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:41:18,775 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:41:18,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-14 05:41:18,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-14 05:41:18,976 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:41:18,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:41:18,977 INFO L85 PathProgramCache]: Analyzing trace with hash 2117141591, now seen corresponding path program 1 times [2024-11-14 05:41:18,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:41:18,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384849833] [2024-11-14 05:41:18,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:41:18,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:41:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:41:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:41:20,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:41:20,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384849833] [2024-11-14 05:41:20,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384849833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:41:20,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056947976] [2024-11-14 05:41:20,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:41:20,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:41:20,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:41:20,759 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:41:20,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:41:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:41:21,269 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 05:41:21,275 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:41:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:41:21,688 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:41:21,996 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-14 05:41:21,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056947976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:41:21,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2070695938] [2024-11-14 05:41:22,004 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2024-11-14 05:41:22,004 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:41:22,004 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:41:22,005 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:41:22,005 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:41:38,909 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:41:56,437 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2209179#(and (<= (+ ~nl1~0 ~st1~0) 1) (<= 2 (+ ~nl3~0 ~st3~0)) (<= 0 ~mode3~0) (<= ~mode2~0 1) (<= ~mode3~0 1) (exists ((|v_ULTIMATE.start_main_~assert__arg~0#1_163| Int) (|v_ULTIMATE.start_main_~__tmp_1~0#1_5| Int)) (and (= |v_ULTIMATE.start_main_~__tmp_1~0#1_5| 0) (= ~__return_1921~0 0) (= |v_ULTIMATE.start_main_~assert__arg~0#1_163| 0))) (<= (+ ~nl2~0 ~st2~0) 1) (<= 0 ~mode2~0))' at error location [2024-11-14 05:41:56,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:41:56,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:41:56,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-14 05:41:56,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709904512] [2024-11-14 05:41:56,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:41:56,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:41:56,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:41:56,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:41:56,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=495, Invalid=3165, Unknown=0, NotChecked=0, Total=3660 [2024-11-14 05:41:56,441 INFO L87 Difference]: Start difference. First operand 242964 states and 345287 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 05:41:57,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:41:57,811 INFO L93 Difference]: Finished difference Result 511348 states and 730739 transitions. [2024-11-14 05:41:57,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:41:57,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 05:41:57,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:41:58,363 INFO L225 Difference]: With dead ends: 511348 [2024-11-14 05:41:58,363 INFO L226 Difference]: Without dead ends: 381838 [2024-11-14 05:41:58,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 165 SyntacticMatches, 10 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=495, Invalid=3165, Unknown=0, NotChecked=0, Total=3660 [2024-11-14 05:41:58,480 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 336 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:41:58,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 434 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:41:58,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381838 states. [2024-11-14 05:42:05,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381838 to 302932. [2024-11-14 05:42:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302932 states, 302931 states have (on average 1.4170190571450265) internal successors, (429259), 302931 states have internal predecessors, (429259), 0 states have call successors, (0), 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 05:42:07,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302932 states to 302932 states and 429259 transitions. [2024-11-14 05:42:07,811 INFO L78 Accepts]: Start accepts. Automaton has 302932 states and 429259 transitions. Word has length 77 [2024-11-14 05:42:07,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:42:07,814 INFO L471 AbstractCegarLoop]: Abstraction has 302932 states and 429259 transitions. [2024-11-14 05:42:07,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 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 05:42:07,814 INFO L276 IsEmpty]: Start isEmpty. Operand 302932 states and 429259 transitions. [2024-11-14 05:42:07,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-14 05:42:07,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:42:07,820 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] [2024-11-14 05:42:07,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 05:42:08,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:42:08,021 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:42:08,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:42:08,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1536226664, now seen corresponding path program 1 times [2024-11-14 05:42:08,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:42:08,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670067301] [2024-11-14 05:42:08,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:42:08,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:42:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:42:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:42:09,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:42:09,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670067301] [2024-11-14 05:42:09,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670067301] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:42:09,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315167160] [2024-11-14 05:42:09,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:42:09,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:42:09,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:42:09,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:42:09,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e02098eb-f8c9-48e5-9b82-7183a3c37171/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 05:42:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:42:10,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-14 05:42:10,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:42:12,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-14 05:42:12,092 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:42:15,370 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 05:42:15,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315167160] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:42:15,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1302176427] [2024-11-14 05:42:15,373 INFO L159 IcfgInterpreter]: Started Sifa with 68 locations of interest [2024-11-14 05:42:15,373 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:42:15,373 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:42:15,374 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:42:15,374 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 05:42:27,308 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 05:42:47,071 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3024021#(and (<= (+ ~nl1~0 ~st1~0) 1) (not (= (+ ~st3~0 ~st2~0 ~st1~0) 0)) (<= 0 ~mode3~0) (<= ~mode2~0 1) (<= ~mode3~0 1) (exists ((|v_ULTIMATE.start_main_~__tmp_1~0#1_5| Int) (|v_ULTIMATE.start_main_~assert__arg~0#1_177| Int)) (and (= |v_ULTIMATE.start_main_~assert__arg~0#1_177| 0) (= |v_ULTIMATE.start_main_~__tmp_1~0#1_5| 0) (= ~__return_1921~0 0))) (<= (mod ~r1~0 256) 1) (<= (+ ~nl2~0 ~st2~0) 1) (<= 0 ~mode2~0) (<= (+ ~nl3~0 ~st3~0) 1))' at error location [2024-11-14 05:42:47,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 05:42:47,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 05:42:47,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 18] total 39 [2024-11-14 05:42:47,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572088345] [2024-11-14 05:42:47,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 05:42:47,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-14 05:42:47,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:42:47,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-14 05:42:47,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1071, Invalid=7671, Unknown=0, NotChecked=0, Total=8742 [2024-11-14 05:42:47,075 INFO L87 Difference]: Start difference. First operand 302932 states and 429259 transitions. Second operand has 39 states, 39 states have (on average 5.538461538461538) internal successors, (216), 39 states have internal predecessors, (216), 0 states have call successors, (0), 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 05:43:41,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:43:41,338 INFO L93 Difference]: Finished difference Result 2820854 states and 4032388 transitions. [2024-11-14 05:43:41,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2024-11-14 05:43:41,339 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.538461538461538) internal successors, (216), 39 states have internal predecessors, (216), 0 states have call successors, (0), 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 05:43:41,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:43:47,012 INFO L225 Difference]: With dead ends: 2820854 [2024-11-14 05:43:47,012 INFO L226 Difference]: Without dead ends: 2522240 [2024-11-14 05:43:47,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 147 SyntacticMatches, 7 SemanticMatches, 311 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45009 ImplicationChecksByTransitivity, 53.1s TimeCoverageRelationStatistics Valid=11848, Invalid=85808, Unknown=0, NotChecked=0, Total=97656 [2024-11-14 05:43:47,644 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 12051 mSDsluCounter, 7033 mSDsCounter, 0 mSdLazyCounter, 4300 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12051 SdHoareTripleChecker+Valid, 7157 SdHoareTripleChecker+Invalid, 4820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 4300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-14 05:43:47,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12051 Valid, 7157 Invalid, 4820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [520 Valid, 4300 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-14 05:43:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522240 states.