./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.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_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/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_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/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_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/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 6fd1b86eb4bd4da10127873e4ddea09cb0ce3be9adebe9545b8e8b0c5a6a02d7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 05:46:53,847 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 05:46:53,966 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 05:46:53,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 05:46:53,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 05:46:54,020 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 05:46:54,021 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 05:46:54,021 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 05:46:54,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 05:46:54,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 05:46:54,024 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 05:46:54,024 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 05:46:54,024 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 05:46:54,024 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 05:46:54,024 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 05:46:54,025 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 05:46:54,025 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 05:46:54,025 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 05:46:54,025 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 05:46:54,026 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 05:46:54,026 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 05:46:54,026 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 05:46:54,027 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 05:46:54,027 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 05:46:54,027 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 05:46:54,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 05:46:54,027 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 05:46:54,028 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 05:46:54,028 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 05:46:54,028 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 05:46:54,028 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 05:46:54,029 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 05:46:54,029 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 05:46:54,029 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 05:46:54,029 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 05:46:54,029 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 05:46:54,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 05:46:54,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 05:46:54,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:46:54,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 05:46:54,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 05:46:54,030 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 05:46:54,030 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 05:46:54,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 05:46:54,030 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 05:46:54,030 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 05:46:54,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 05:46:54,030 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_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/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 -> 6fd1b86eb4bd4da10127873e4ddea09cb0ce3be9adebe9545b8e8b0c5a6a02d7 [2024-11-14 05:46:54,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 05:46:54,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 05:46:54,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 05:46:54,460 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 05:46:54,461 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 05:46:54,462 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c Unable to find full path for "g++" [2024-11-14 05:46:56,731 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 05:46:57,175 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 05:46:57,180 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-14 05:46:57,202 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/data/9394d8f3f/071ef01fa5874e8a846e5b85c37c90a7/FLAGe5f6f3966 [2024-11-14 05:46:57,227 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/data/9394d8f3f/071ef01fa5874e8a846e5b85c37c90a7 [2024-11-14 05:46:57,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 05:46:57,233 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 05:46:57,235 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 05:46:57,235 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 05:46:57,241 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 05:46:57,242 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:46:57" (1/1) ... [2024-11-14 05:46:57,243 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a6c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:57, skipping insertion in model container [2024-11-14 05:46:57,243 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 05:46:57" (1/1) ... [2024-11-14 05:46:57,303 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 05:46:57,674 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_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2024-11-14 05:46:57,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:46:57,769 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 05:46:57,830 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_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2024-11-14 05:46:57,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 05:46:57,879 INFO L204 MainTranslator]: Completed translation [2024-11-14 05:46:57,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:57 WrapperNode [2024-11-14 05:46:57,880 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 05:46:57,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 05:46:57,882 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 05:46:57,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 05:46:57,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:57" (1/1) ... [2024-11-14 05:46:57,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:57" (1/1) ... [2024-11-14 05:46:57,948 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 687 [2024-11-14 05:46:57,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 05:46:57,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 05:46:57,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 05:46:57,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 05:46:57,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:57" (1/1) ... [2024-11-14 05:46:57,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:57" (1/1) ... [2024-11-14 05:46:57,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:57" (1/1) ... [2024-11-14 05:46:57,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:57" (1/1) ... [2024-11-14 05:46:57,976 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:57" (1/1) ... [2024-11-14 05:46:57,983 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:57" (1/1) ... [2024-11-14 05:46:57,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:57" (1/1) ... [2024-11-14 05:46:57,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:57" (1/1) ... [2024-11-14 05:46:57,994 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 05:46:57,995 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 05:46:57,995 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 05:46:57,995 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 05:46:57,997 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:57" (1/1) ... [2024-11-14 05:46:58,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 05:46:58,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:46:58,032 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 05:46:58,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 05:46:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 05:46:58,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 05:46:58,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 05:46:58,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 05:46:58,271 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 05:46:58,273 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 05:46:59,337 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-14 05:46:59,337 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 05:46:59,900 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 05:46:59,902 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 05:46:59,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:46:59 BoogieIcfgContainer [2024-11-14 05:46:59,903 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 05:46:59,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 05:46:59,907 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 05:46:59,913 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 05:46:59,913 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 05:46:57" (1/3) ... [2024-11-14 05:46:59,914 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d316cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:46:59, skipping insertion in model container [2024-11-14 05:46:59,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 05:46:57" (2/3) ... [2024-11-14 05:46:59,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d316cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 05:46:59, skipping insertion in model container [2024-11-14 05:46:59,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 05:46:59" (3/3) ... [2024-11-14 05:46:59,918 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-14 05:46:59,939 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 05:46:59,942 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.3.4.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c that has 1 procedures, 98 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-14 05:47:00,033 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 05:47:00,052 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;@4cc860f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 05:47:00,053 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 05:47:00,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 98 states, 96 states have (on average 1.7708333333333333) internal successors, (170), 97 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 05:47:00,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-14 05:47:00,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:00,072 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 05:47:00,073 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:00,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:00,080 INFO L85 PathProgramCache]: Analyzing trace with hash 566108884, now seen corresponding path program 1 times [2024-11-14 05:47:00,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:00,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195576464] [2024-11-14 05:47:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:00,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:00,827 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 05:47:00,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:00,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195576464] [2024-11-14 05:47:00,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195576464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:00,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:00,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:47:00,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608335874] [2024-11-14 05:47:00,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:00,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:47:00,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:00,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:47:00,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:00,874 INFO L87 Difference]: Start difference. First operand has 98 states, 96 states have (on average 1.7708333333333333) internal successors, (170), 97 states have internal predecessors, (170), 0 states have call successors, (0), 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 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 05:47:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:01,014 INFO L93 Difference]: Finished difference Result 216 states and 361 transitions. [2024-11-14 05:47:01,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:47:01,019 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 05:47:01,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:01,031 INFO L225 Difference]: With dead ends: 216 [2024-11-14 05:47:01,032 INFO L226 Difference]: Without dead ends: 146 [2024-11-14 05:47:01,035 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 05:47:01,039 INFO L432 NwaCegarLoop]: 237 mSDtfsCounter, 109 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 362 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 05:47:01,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 362 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:01,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-14 05:47:01,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2024-11-14 05:47:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.5034965034965035) internal successors, (215), 143 states have internal predecessors, (215), 0 states have call successors, (0), 0 states 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 05:47:01,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 215 transitions. [2024-11-14 05:47:01,100 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 215 transitions. Word has length 43 [2024-11-14 05:47:01,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:01,101 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 215 transitions. [2024-11-14 05:47:01,102 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 05:47:01,102 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 215 transitions. [2024-11-14 05:47:01,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 05:47:01,103 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:01,106 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 05:47:01,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 05:47:01,107 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:01,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:01,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1914990475, now seen corresponding path program 1 times [2024-11-14 05:47:01,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:01,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641971535] [2024-11-14 05:47:01,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:01,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:01,541 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 05:47:01,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:01,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641971535] [2024-11-14 05:47:01,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641971535] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:01,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:01,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:47:01,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181042865] [2024-11-14 05:47:01,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:01,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:47:01,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:01,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:47:01,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:01,549 INFO L87 Difference]: Start difference. First operand 144 states and 215 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 05:47:01,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:01,696 INFO L93 Difference]: Finished difference Result 309 states and 482 transitions. [2024-11-14 05:47:01,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:47:01,697 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 05:47:01,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:01,699 INFO L225 Difference]: With dead ends: 309 [2024-11-14 05:47:01,699 INFO L226 Difference]: Without dead ends: 197 [2024-11-14 05:47:01,700 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 05:47:01,701 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 95 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:01,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 205 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:01,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-14 05:47:01,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 195. [2024-11-14 05:47:01,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.5154639175257731) internal successors, (294), 194 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 05:47:01,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 294 transitions. [2024-11-14 05:47:01,722 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 294 transitions. Word has length 45 [2024-11-14 05:47:01,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:01,722 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 294 transitions. [2024-11-14 05:47:01,722 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 05:47:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 294 transitions. [2024-11-14 05:47:01,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-14 05:47:01,724 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:01,724 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 05:47:01,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 05:47:01,724 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:01,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1398553194, now seen corresponding path program 1 times [2024-11-14 05:47:01,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:01,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886280710] [2024-11-14 05:47:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:01,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:01,958 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 05:47:01,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:01,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886280710] [2024-11-14 05:47:01,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886280710] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:01,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:01,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:47:01,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521736609] [2024-11-14 05:47:01,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:01,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:47:01,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:01,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:47:01,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:01,963 INFO L87 Difference]: Start difference. First operand 195 states and 294 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 05:47:02,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:02,063 INFO L93 Difference]: Finished difference Result 475 states and 745 transitions. [2024-11-14 05:47:02,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:47:02,065 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 05:47:02,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:02,067 INFO L225 Difference]: With dead ends: 475 [2024-11-14 05:47:02,068 INFO L226 Difference]: Without dead ends: 314 [2024-11-14 05:47:02,069 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 05:47:02,070 INFO L432 NwaCegarLoop]: 175 mSDtfsCounter, 95 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 276 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 05:47:02,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 276 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:02,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-14 05:47:02,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2024-11-14 05:47:02,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.5466237942122187) internal successors, (481), 311 states have internal predecessors, (481), 0 states have call successors, (0), 0 states 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 05:47:02,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 481 transitions. [2024-11-14 05:47:02,111 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 481 transitions. Word has length 47 [2024-11-14 05:47:02,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:02,111 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 481 transitions. [2024-11-14 05:47:02,112 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 05:47:02,112 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 481 transitions. [2024-11-14 05:47:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 05:47:02,113 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:02,113 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:02,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 05:47:02,118 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:02,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:02,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1696286242, now seen corresponding path program 1 times [2024-11-14 05:47:02,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:02,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286644875] [2024-11-14 05:47:02,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:02,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:02,421 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 05:47:02,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:02,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286644875] [2024-11-14 05:47:02,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286644875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:02,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:02,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:47:02,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199250644] [2024-11-14 05:47:02,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:02,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:47:02,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:02,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:47:02,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:02,425 INFO L87 Difference]: Start difference. First operand 312 states and 481 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 05:47:02,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:02,521 INFO L93 Difference]: Finished difference Result 767 states and 1212 transitions. [2024-11-14 05:47:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:47:02,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 05:47:02,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:02,528 INFO L225 Difference]: With dead ends: 767 [2024-11-14 05:47:02,528 INFO L226 Difference]: Without dead ends: 489 [2024-11-14 05:47:02,529 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 05:47:02,530 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 94 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 241 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 05:47:02,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 241 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:02,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2024-11-14 05:47:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 487. [2024-11-14 05:47:02,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.5658436213991769) internal successors, (761), 486 states have internal predecessors, (761), 0 states have call successors, (0), 0 states 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 05:47:02,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 761 transitions. [2024-11-14 05:47:02,587 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 761 transitions. Word has length 49 [2024-11-14 05:47:02,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:02,587 INFO L471 AbstractCegarLoop]: Abstraction has 487 states and 761 transitions. [2024-11-14 05:47:02,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 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 05:47:02,587 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 761 transitions. [2024-11-14 05:47:02,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 05:47:02,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:02,593 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 05:47:02,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 05:47:02,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:02,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:02,594 INFO L85 PathProgramCache]: Analyzing trace with hash -2030005373, now seen corresponding path program 1 times [2024-11-14 05:47:02,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:02,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815499118] [2024-11-14 05:47:02,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:02,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:02,822 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 05:47:02,822 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:02,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815499118] [2024-11-14 05:47:02,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815499118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:02,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:02,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:47:02,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916558609] [2024-11-14 05:47:02,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:02,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:47:02,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:02,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:47:02,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:02,828 INFO L87 Difference]: Start difference. First operand 487 states and 761 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 05:47:02,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:02,951 INFO L93 Difference]: Finished difference Result 1235 states and 1960 transitions. [2024-11-14 05:47:02,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:47:02,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 05:47:02,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:02,959 INFO L225 Difference]: With dead ends: 1235 [2024-11-14 05:47:02,959 INFO L226 Difference]: Without dead ends: 798 [2024-11-14 05:47:02,960 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 05:47:02,962 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 89 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 252 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 05:47:02,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 252 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:02,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-11-14 05:47:03,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 796. [2024-11-14 05:47:03,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 1.568553459119497) internal successors, (1247), 795 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states 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 05:47:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1247 transitions. [2024-11-14 05:47:03,014 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1247 transitions. Word has length 51 [2024-11-14 05:47:03,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:03,015 INFO L471 AbstractCegarLoop]: Abstraction has 796 states and 1247 transitions. [2024-11-14 05:47:03,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 05:47:03,015 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1247 transitions. [2024-11-14 05:47:03,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 05:47:03,016 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:03,017 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, 1, 1, 1] [2024-11-14 05:47:03,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 05:47:03,017 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:03,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:03,020 INFO L85 PathProgramCache]: Analyzing trace with hash -745174181, now seen corresponding path program 1 times [2024-11-14 05:47:03,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:03,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34995908] [2024-11-14 05:47:03,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:03,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:03,267 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 05:47:03,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:03,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34995908] [2024-11-14 05:47:03,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34995908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:03,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:03,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:47:03,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644470475] [2024-11-14 05:47:03,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:03,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:47:03,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:03,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:47:03,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:03,269 INFO L87 Difference]: Start difference. First operand 796 states and 1247 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:03,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:03,383 INFO L93 Difference]: Finished difference Result 1995 states and 3163 transitions. [2024-11-14 05:47:03,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:47:03,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-14 05:47:03,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:03,393 INFO L225 Difference]: With dead ends: 1995 [2024-11-14 05:47:03,393 INFO L226 Difference]: Without dead ends: 1249 [2024-11-14 05:47:03,395 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 05:47:03,396 INFO L432 NwaCegarLoop]: 137 mSDtfsCounter, 88 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 243 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 05:47:03,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 243 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2024-11-14 05:47:03,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1247. [2024-11-14 05:47:03,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1247 states, 1246 states have (on average 1.5762439807383628) internal successors, (1964), 1246 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states 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 05:47:03,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1964 transitions. [2024-11-14 05:47:03,492 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1964 transitions. Word has length 53 [2024-11-14 05:47:03,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:03,493 INFO L471 AbstractCegarLoop]: Abstraction has 1247 states and 1964 transitions. [2024-11-14 05:47:03,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:03,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1964 transitions. [2024-11-14 05:47:03,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 05:47:03,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:03,497 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:03,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 05:47:03,497 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:03,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:03,499 INFO L85 PathProgramCache]: Analyzing trace with hash -585568132, now seen corresponding path program 1 times [2024-11-14 05:47:03,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:03,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734507665] [2024-11-14 05:47:03,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:03,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:03,870 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 05:47:03,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:03,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734507665] [2024-11-14 05:47:03,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734507665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:03,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:03,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:47:03,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126148247] [2024-11-14 05:47:03,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:03,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:47:03,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:03,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:47:03,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:47:03,873 INFO L87 Difference]: Start difference. First operand 1247 states and 1964 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:04,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:04,270 INFO L93 Difference]: Finished difference Result 3944 states and 6219 transitions. [2024-11-14 05:47:04,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 05:47:04,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-14 05:47:04,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:04,287 INFO L225 Difference]: With dead ends: 3944 [2024-11-14 05:47:04,287 INFO L226 Difference]: Without dead ends: 2763 [2024-11-14 05:47:04,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-14 05:47:04,294 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 549 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 959 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 05:47:04,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 959 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-14 05:47:04,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2024-11-14 05:47:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 1985. [2024-11-14 05:47:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1984 states have (on average 1.5665322580645162) internal successors, (3108), 1984 states have internal predecessors, (3108), 0 states have call successors, (0), 0 states 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 05:47:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 3108 transitions. [2024-11-14 05:47:04,389 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 3108 transitions. Word has length 55 [2024-11-14 05:47:04,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:04,390 INFO L471 AbstractCegarLoop]: Abstraction has 1985 states and 3108 transitions. [2024-11-14 05:47:04,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 3108 transitions. [2024-11-14 05:47:04,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 05:47:04,392 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:04,393 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:04,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 05:47:04,393 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:04,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:04,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1035247094, now seen corresponding path program 1 times [2024-11-14 05:47:04,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:04,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421582607] [2024-11-14 05:47:04,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:04,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:04,685 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 05:47:04,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:04,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421582607] [2024-11-14 05:47:04,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421582607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:04,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:04,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:47:04,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846675523] [2024-11-14 05:47:04,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:04,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:47:04,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:04,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:47:04,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:47:04,687 INFO L87 Difference]: Start difference. First operand 1985 states and 3108 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:04,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:04,868 INFO L93 Difference]: Finished difference Result 4674 states and 7329 transitions. [2024-11-14 05:47:04,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:47:04,868 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-14 05:47:04,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:04,881 INFO L225 Difference]: With dead ends: 4674 [2024-11-14 05:47:04,881 INFO L226 Difference]: Without dead ends: 2755 [2024-11-14 05:47:04,884 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 05:47:04,885 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 182 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 347 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 05:47:04,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 347 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2024-11-14 05:47:04,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2753. [2024-11-14 05:47:04,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 1.5588662790697674) internal successors, (4290), 2752 states have internal predecessors, (4290), 0 states have call successors, (0), 0 states 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 05:47:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 4290 transitions. [2024-11-14 05:47:04,986 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 4290 transitions. Word has length 56 [2024-11-14 05:47:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:04,987 INFO L471 AbstractCegarLoop]: Abstraction has 2753 states and 4290 transitions. [2024-11-14 05:47:04,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:04,987 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 4290 transitions. [2024-11-14 05:47:04,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 05:47:04,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:04,989 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 05:47:04,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 05:47:04,989 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:04,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:04,990 INFO L85 PathProgramCache]: Analyzing trace with hash -2085835005, now seen corresponding path program 1 times [2024-11-14 05:47:04,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:04,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586746263] [2024-11-14 05:47:04,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:04,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:05,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 05:47:05,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:05,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586746263] [2024-11-14 05:47:05,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586746263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:05,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:05,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:47:05,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747042153] [2024-11-14 05:47:05,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:05,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:47:05,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:05,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:47:05,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:47:05,170 INFO L87 Difference]: Start difference. First operand 2753 states and 4290 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 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 05:47:05,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:05,333 INFO L93 Difference]: Finished difference Result 5442 states and 8499 transitions. [2024-11-14 05:47:05,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:47:05,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 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 05:47:05,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:05,350 INFO L225 Difference]: With dead ends: 5442 [2024-11-14 05:47:05,350 INFO L226 Difference]: Without dead ends: 2755 [2024-11-14 05:47:05,358 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 05:47:05,359 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 190 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 353 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 05:47:05,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 353 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:05,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2024-11-14 05:47:05,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2753. [2024-11-14 05:47:05,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 1.552688953488372) internal successors, (4273), 2752 states have internal predecessors, (4273), 0 states have call successors, (0), 0 states 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 05:47:05,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 4273 transitions. [2024-11-14 05:47:05,457 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 4273 transitions. Word has length 57 [2024-11-14 05:47:05,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:05,458 INFO L471 AbstractCegarLoop]: Abstraction has 2753 states and 4273 transitions. [2024-11-14 05:47:05,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 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 05:47:05,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 4273 transitions. [2024-11-14 05:47:05,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-14 05:47:05,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:05,459 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 05:47:05,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 05:47:05,460 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:05,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:05,464 INFO L85 PathProgramCache]: Analyzing trace with hash -289763855, now seen corresponding path program 1 times [2024-11-14 05:47:05,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:05,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099304612] [2024-11-14 05:47:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:05,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:05,656 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 05:47:05,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:05,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099304612] [2024-11-14 05:47:05,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099304612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:05,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:05,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:47:05,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380941470] [2024-11-14 05:47:05,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:05,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 05:47:05,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:05,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 05:47:05,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 05:47:05,659 INFO L87 Difference]: Start difference. First operand 2753 states and 4273 transitions. Second operand has 4 states, 4 states have (on average 14.5) 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 05:47:05,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:05,818 INFO L93 Difference]: Finished difference Result 5442 states and 8465 transitions. [2024-11-14 05:47:05,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 05:47:05,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) 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 05:47:05,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:05,886 INFO L225 Difference]: With dead ends: 5442 [2024-11-14 05:47:05,886 INFO L226 Difference]: Without dead ends: 2755 [2024-11-14 05:47:05,889 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 05:47:05,889 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 188 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 356 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 05:47:05,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 356 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:05,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2024-11-14 05:47:05,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2753. [2024-11-14 05:47:05,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 1.5465116279069768) internal successors, (4256), 2752 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states 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 05:47:05,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 4256 transitions. [2024-11-14 05:47:05,986 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 4256 transitions. Word has length 58 [2024-11-14 05:47:05,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:05,987 INFO L471 AbstractCegarLoop]: Abstraction has 2753 states and 4256 transitions. [2024-11-14 05:47:05,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) 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 05:47:05,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 4256 transitions. [2024-11-14 05:47:05,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 05:47:05,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:05,989 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] [2024-11-14 05:47:05,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 05:47:05,989 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:05,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:05,990 INFO L85 PathProgramCache]: Analyzing trace with hash -807501630, now seen corresponding path program 1 times [2024-11-14 05:47:05,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:05,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747230221] [2024-11-14 05:47:05,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:05,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:06,349 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 05:47:06,350 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:06,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747230221] [2024-11-14 05:47:06,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747230221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:06,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:06,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:47:06,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283931073] [2024-11-14 05:47:06,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:06,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:47:06,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:06,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:47:06,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:47:06,354 INFO L87 Difference]: Start difference. First operand 2753 states and 4256 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 05:47:06,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:06,592 INFO L93 Difference]: Finished difference Result 5442 states and 8431 transitions. [2024-11-14 05:47:06,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:47:06,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2024-11-14 05:47:06,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:06,606 INFO L225 Difference]: With dead ends: 5442 [2024-11-14 05:47:06,606 INFO L226 Difference]: Without dead ends: 2755 [2024-11-14 05:47:06,610 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 05:47:06,612 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 223 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 342 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 05:47:06,612 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 342 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2024-11-14 05:47:06,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2753. [2024-11-14 05:47:06,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2753 states, 2752 states have (on average 1.5421511627906976) internal successors, (4244), 2752 states have internal predecessors, (4244), 0 states have call successors, (0), 0 states 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 05:47:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 4244 transitions. [2024-11-14 05:47:06,706 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 4244 transitions. Word has length 60 [2024-11-14 05:47:06,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:06,707 INFO L471 AbstractCegarLoop]: Abstraction has 2753 states and 4244 transitions. [2024-11-14 05:47:06,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states 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 05:47:06,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 4244 transitions. [2024-11-14 05:47:06,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-14 05:47:06,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:06,708 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:06,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-14 05:47:06,708 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:06,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:06,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2077186613, now seen corresponding path program 1 times [2024-11-14 05:47:06,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:06,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055744243] [2024-11-14 05:47:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:06,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:07,069 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 05:47:07,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:07,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055744243] [2024-11-14 05:47:07,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055744243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:07,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:07,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 05:47:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104296650] [2024-11-14 05:47:07,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:07,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:47:07,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:07,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:47:07,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:47:07,071 INFO L87 Difference]: Start difference. First operand 2753 states and 4244 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:07,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:07,321 INFO L93 Difference]: Finished difference Result 7105 states and 10944 transitions. [2024-11-14 05:47:07,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:47:07,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-14 05:47:07,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:07,342 INFO L225 Difference]: With dead ends: 7105 [2024-11-14 05:47:07,342 INFO L226 Difference]: Without dead ends: 4418 [2024-11-14 05:47:07,346 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 05:47:07,347 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 74 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:07,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 474 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:47:07,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4418 states. [2024-11-14 05:47:07,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4418 to 4416. [2024-11-14 05:47:07,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4416 states, 4415 states have (on average 1.5322763306908267) internal successors, (6765), 4415 states have internal predecessors, (6765), 0 states have call successors, (0), 0 states 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 05:47:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4416 states to 4416 states and 6765 transitions. [2024-11-14 05:47:07,532 INFO L78 Accepts]: Start accepts. Automaton has 4416 states and 6765 transitions. Word has length 63 [2024-11-14 05:47:07,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:07,533 INFO L471 AbstractCegarLoop]: Abstraction has 4416 states and 6765 transitions. [2024-11-14 05:47:07,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:07,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4416 states and 6765 transitions. [2024-11-14 05:47:07,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-14 05:47:07,535 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:07,536 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:07,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-14 05:47:07,538 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:07,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:07,539 INFO L85 PathProgramCache]: Analyzing trace with hash -21270464, now seen corresponding path program 1 times [2024-11-14 05:47:07,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:07,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066503179] [2024-11-14 05:47:07,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:07,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:08,562 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 05:47:08,562 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:08,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066503179] [2024-11-14 05:47:08,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066503179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:08,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:08,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:47:08,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068212085] [2024-11-14 05:47:08,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:08,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:47:08,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:08,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:47:08,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:47:08,566 INFO L87 Difference]: Start difference. First operand 4416 states and 6765 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:08,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:08,800 INFO L93 Difference]: Finished difference Result 12855 states and 19712 transitions. [2024-11-14 05:47:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:47:08,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-14 05:47:08,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:08,857 INFO L225 Difference]: With dead ends: 12855 [2024-11-14 05:47:08,857 INFO L226 Difference]: Without dead ends: 8505 [2024-11-14 05:47:08,866 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 05:47:08,867 INFO L432 NwaCegarLoop]: 202 mSDtfsCounter, 182 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:08,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 520 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8505 states. [2024-11-14 05:47:09,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8505 to 8503. [2024-11-14 05:47:09,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8503 states, 8502 states have (on average 1.525993883792049) internal successors, (12974), 8502 states have internal predecessors, (12974), 0 states have call successors, (0), 0 states 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 05:47:09,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8503 states to 8503 states and 12974 transitions. [2024-11-14 05:47:09,203 INFO L78 Accepts]: Start accepts. Automaton has 8503 states and 12974 transitions. Word has length 64 [2024-11-14 05:47:09,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:09,204 INFO L471 AbstractCegarLoop]: Abstraction has 8503 states and 12974 transitions. [2024-11-14 05:47:09,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:09,209 INFO L276 IsEmpty]: Start isEmpty. Operand 8503 states and 12974 transitions. [2024-11-14 05:47:09,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-14 05:47:09,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:09,214 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:09,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 05:47:09,214 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:09,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:09,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1588356697, now seen corresponding path program 1 times [2024-11-14 05:47:09,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:09,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017368421] [2024-11-14 05:47:09,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:09,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:09,363 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 05:47:09,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:09,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017368421] [2024-11-14 05:47:09,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017368421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:09,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:09,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:47:09,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74578326] [2024-11-14 05:47:09,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:09,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:47:09,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:09,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:47:09,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:09,366 INFO L87 Difference]: Start difference. First operand 8503 states and 12974 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 05:47:09,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:09,598 INFO L93 Difference]: Finished difference Result 19843 states and 30406 transitions. [2024-11-14 05:47:09,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:47:09,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-14 05:47:09,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:09,638 INFO L225 Difference]: With dead ends: 19843 [2024-11-14 05:47:09,638 INFO L226 Difference]: Without dead ends: 11403 [2024-11-14 05:47:09,651 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 05:47:09,652 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 91 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:09,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 255 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:09,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11403 states. [2024-11-14 05:47:09,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11403 to 11401. [2024-11-14 05:47:09,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11401 states, 11400 states have (on average 1.511140350877193) internal successors, (17227), 11400 states have internal predecessors, (17227), 0 states have call successors, (0), 0 states 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 05:47:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11401 states to 11401 states and 17227 transitions. [2024-11-14 05:47:09,926 INFO L78 Accepts]: Start accepts. Automaton has 11401 states and 17227 transitions. Word has length 65 [2024-11-14 05:47:09,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:09,926 INFO L471 AbstractCegarLoop]: Abstraction has 11401 states and 17227 transitions. [2024-11-14 05:47:09,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 05:47:09,927 INFO L276 IsEmpty]: Start isEmpty. Operand 11401 states and 17227 transitions. [2024-11-14 05:47:09,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-14 05:47:09,927 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:09,927 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:09,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-14 05:47:09,928 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:09,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:09,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1922919939, now seen corresponding path program 1 times [2024-11-14 05:47:09,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:09,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469235888] [2024-11-14 05:47:09,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:09,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:10,039 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 05:47:10,039 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:10,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469235888] [2024-11-14 05:47:10,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469235888] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:10,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:10,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:47:10,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538662520] [2024-11-14 05:47:10,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:10,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:47:10,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:10,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:47:10,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:10,041 INFO L87 Difference]: Start difference. First operand 11401 states and 17227 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 05:47:10,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:10,200 INFO L93 Difference]: Finished difference Result 26555 states and 40253 transitions. [2024-11-14 05:47:10,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:47:10,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-11-14 05:47:10,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:10,247 INFO L225 Difference]: With dead ends: 26555 [2024-11-14 05:47:10,247 INFO L226 Difference]: Without dead ends: 15229 [2024-11-14 05:47:10,262 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 05:47:10,263 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 85 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:10,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 258 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:10,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15229 states. [2024-11-14 05:47:10,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15229 to 15227. [2024-11-14 05:47:10,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15227 states, 15226 states have (on average 1.502889793773808) internal successors, (22883), 15226 states have internal predecessors, (22883), 0 states have call successors, (0), 0 states 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 05:47:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15227 states to 15227 states and 22883 transitions. [2024-11-14 05:47:10,717 INFO L78 Accepts]: Start accepts. Automaton has 15227 states and 22883 transitions. Word has length 65 [2024-11-14 05:47:10,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:10,717 INFO L471 AbstractCegarLoop]: Abstraction has 15227 states and 22883 transitions. [2024-11-14 05:47:10,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states 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 05:47:10,717 INFO L276 IsEmpty]: Start isEmpty. Operand 15227 states and 22883 transitions. [2024-11-14 05:47:10,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-14 05:47:10,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:10,718 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:10,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-14 05:47:10,719 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:10,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:10,720 INFO L85 PathProgramCache]: Analyzing trace with hash -474104134, now seen corresponding path program 1 times [2024-11-14 05:47:10,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:10,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48752917] [2024-11-14 05:47:10,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:10,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:10,919 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 05:47:10,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:10,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48752917] [2024-11-14 05:47:10,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48752917] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:10,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:10,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:47:10,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161108825] [2024-11-14 05:47:10,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:10,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:47:10,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:10,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:47:10,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:47:10,922 INFO L87 Difference]: Start difference. First operand 15227 states and 22883 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 05:47:11,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:11,131 INFO L93 Difference]: Finished difference Result 30395 states and 45693 transitions. [2024-11-14 05:47:11,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:47:11,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 05:47:11,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:11,176 INFO L225 Difference]: With dead ends: 30395 [2024-11-14 05:47:11,177 INFO L226 Difference]: Without dead ends: 15227 [2024-11-14 05:47:11,194 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 05:47:11,195 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 336 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 122 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 05:47:11,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 122 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:11,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15227 states. [2024-11-14 05:47:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15227 to 15227. [2024-11-14 05:47:11,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15227 states, 15226 states have (on average 1.4779981610403257) internal successors, (22504), 15226 states have internal predecessors, (22504), 0 states have call successors, (0), 0 states 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 05:47:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15227 states to 15227 states and 22504 transitions. [2024-11-14 05:47:11,634 INFO L78 Accepts]: Start accepts. Automaton has 15227 states and 22504 transitions. Word has length 68 [2024-11-14 05:47:11,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:11,634 INFO L471 AbstractCegarLoop]: Abstraction has 15227 states and 22504 transitions. [2024-11-14 05:47:11,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 05:47:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand 15227 states and 22504 transitions. [2024-11-14 05:47:11,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-14 05:47:11,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:11,635 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:11,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-14 05:47:11,636 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:11,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash -933304875, now seen corresponding path program 1 times [2024-11-14 05:47:11,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:11,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815500565] [2024-11-14 05:47:11,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:11,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:12,562 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 05:47:12,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:12,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815500565] [2024-11-14 05:47:12,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815500565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:12,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:12,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 05:47:12,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353597406] [2024-11-14 05:47:12,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:12,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 05:47:12,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:12,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 05:47:12,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 05:47:12,566 INFO L87 Difference]: Start difference. First operand 15227 states and 22504 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 05:47:12,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:12,874 INFO L93 Difference]: Finished difference Result 44519 states and 66042 transitions. [2024-11-14 05:47:12,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:47:12,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 05:47:12,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:12,961 INFO L225 Difference]: With dead ends: 44519 [2024-11-14 05:47:12,962 INFO L226 Difference]: Without dead ends: 29361 [2024-11-14 05:47:12,985 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 05:47:12,987 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 281 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:12,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 330 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:13,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29361 states. [2024-11-14 05:47:13,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29361 to 29359. [2024-11-14 05:47:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29359 states, 29358 states have (on average 1.4760542271271886) internal successors, (43334), 29358 states have internal predecessors, (43334), 0 states have call successors, (0), 0 states 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 05:47:13,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29359 states to 29359 states and 43334 transitions. [2024-11-14 05:47:13,531 INFO L78 Accepts]: Start accepts. Automaton has 29359 states and 43334 transitions. Word has length 68 [2024-11-14 05:47:13,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:13,532 INFO L471 AbstractCegarLoop]: Abstraction has 29359 states and 43334 transitions. [2024-11-14 05:47:13,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 05:47:13,532 INFO L276 IsEmpty]: Start isEmpty. Operand 29359 states and 43334 transitions. [2024-11-14 05:47:13,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-14 05:47:13,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:13,534 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:13,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-14 05:47:13,536 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:13,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:13,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1812090687, now seen corresponding path program 1 times [2024-11-14 05:47:13,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:13,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256324657] [2024-11-14 05:47:13,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:13,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:13,769 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 05:47:13,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:13,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256324657] [2024-11-14 05:47:13,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256324657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:13,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:13,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 05:47:13,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088507241] [2024-11-14 05:47:13,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:13,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 05:47:13,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:13,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 05:47:13,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 05:47:13,772 INFO L87 Difference]: Start difference. First operand 29359 states and 43334 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:14,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:14,131 INFO L93 Difference]: Finished difference Result 66845 states and 98670 transitions. [2024-11-14 05:47:14,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 05:47:14,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-14 05:47:14,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:14,226 INFO L225 Difference]: With dead ends: 66845 [2024-11-14 05:47:14,226 INFO L226 Difference]: Without dead ends: 37527 [2024-11-14 05:47:14,259 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 05:47:14,260 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 88 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:14,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 248 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:14,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37527 states. [2024-11-14 05:47:15,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37527 to 37525. [2024-11-14 05:47:15,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37525 states, 37524 states have (on average 1.4530966847884021) internal successors, (54526), 37524 states have internal predecessors, (54526), 0 states have call successors, (0), 0 states 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 05:47:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37525 states to 37525 states and 54526 transitions. [2024-11-14 05:47:15,190 INFO L78 Accepts]: Start accepts. Automaton has 37525 states and 54526 transitions. Word has length 69 [2024-11-14 05:47:15,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:15,190 INFO L471 AbstractCegarLoop]: Abstraction has 37525 states and 54526 transitions. [2024-11-14 05:47:15,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:15,191 INFO L276 IsEmpty]: Start isEmpty. Operand 37525 states and 54526 transitions. [2024-11-14 05:47:15,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-14 05:47:15,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:15,197 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:15,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-14 05:47:15,197 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:15,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:15,198 INFO L85 PathProgramCache]: Analyzing trace with hash -814945817, now seen corresponding path program 1 times [2024-11-14 05:47:15,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:15,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554279783] [2024-11-14 05:47:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:15,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:15,899 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 05:47:15,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:15,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554279783] [2024-11-14 05:47:15,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554279783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:15,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 05:47:15,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 05:47:15,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693754140] [2024-11-14 05:47:15,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:15,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:47:15,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:15,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:47:15,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 05:47:15,901 INFO L87 Difference]: Start difference. First operand 37525 states and 54526 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 05:47:16,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:16,276 INFO L93 Difference]: Finished difference Result 37737 states and 54840 transitions. [2024-11-14 05:47:16,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:47:16,276 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 72 [2024-11-14 05:47:16,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:16,353 INFO L225 Difference]: With dead ends: 37737 [2024-11-14 05:47:16,354 INFO L226 Difference]: Without dead ends: 37735 [2024-11-14 05:47:16,364 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 05:47:16,365 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 61 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:16,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 575 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:47:16,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37735 states. [2024-11-14 05:47:16,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37735 to 37733. [2024-11-14 05:47:16,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37733 states, 37732 states have (on average 1.4482667232057669) internal successors, (54646), 37732 states have internal predecessors, (54646), 0 states have call successors, (0), 0 states 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 05:47:16,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37733 states to 37733 states and 54646 transitions. [2024-11-14 05:47:16,983 INFO L78 Accepts]: Start accepts. Automaton has 37733 states and 54646 transitions. Word has length 72 [2024-11-14 05:47:16,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:16,984 INFO L471 AbstractCegarLoop]: Abstraction has 37733 states and 54646 transitions. [2024-11-14 05:47:16,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 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 05:47:16,984 INFO L276 IsEmpty]: Start isEmpty. Operand 37733 states and 54646 transitions. [2024-11-14 05:47:16,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-14 05:47:16,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:16,989 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, 1, 1, 1, 1, 1] [2024-11-14 05:47:16,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-14 05:47:16,990 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:16,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:16,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1019466073, now seen corresponding path program 1 times [2024-11-14 05:47:16,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:16,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384474766] [2024-11-14 05:47:16,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:16,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:19,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:47:19,077 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:19,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384474766] [2024-11-14 05:47:19,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384474766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:19,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191398598] [2024-11-14 05:47:19,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:19,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:19,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:19,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:19,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 05:47:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:19,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-14 05:47:19,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-14 05:47:20,983 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:47:20,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191398598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:20,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:47:20,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2024-11-14 05:47:20,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378356777] [2024-11-14 05:47:20,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:20,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:47:20,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:20,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:47:20,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:47:20,986 INFO L87 Difference]: Start difference. First operand 37733 states and 54646 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:21,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:21,517 INFO L93 Difference]: Finished difference Result 110597 states and 160157 transitions. [2024-11-14 05:47:21,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 05:47:21,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-14 05:47:21,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:21,724 INFO L225 Difference]: With dead ends: 110597 [2024-11-14 05:47:21,724 INFO L226 Difference]: Without dead ends: 72929 [2024-11-14 05:47:21,765 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-11-14 05:47:21,766 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 263 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:21,766 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 409 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 05:47:21,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72929 states. [2024-11-14 05:47:23,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72929 to 72927. [2024-11-14 05:47:23,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72927 states, 72926 states have (on average 1.4295038806461344) internal successors, (104248), 72926 states have internal predecessors, (104248), 0 states have call successors, (0), 0 states 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 05:47:24,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72927 states to 72927 states and 104248 transitions. [2024-11-14 05:47:24,176 INFO L78 Accepts]: Start accepts. Automaton has 72927 states and 104248 transitions. Word has length 82 [2024-11-14 05:47:24,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:24,176 INFO L471 AbstractCegarLoop]: Abstraction has 72927 states and 104248 transitions. [2024-11-14 05:47:24,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:24,177 INFO L276 IsEmpty]: Start isEmpty. Operand 72927 states and 104248 transitions. [2024-11-14 05:47:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-14 05:47:24,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:24,180 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, 1, 1, 1, 1, 1] [2024-11-14 05:47:24,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 05:47:24,384 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:24,384 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:24,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:24,386 INFO L85 PathProgramCache]: Analyzing trace with hash -506159783, now seen corresponding path program 1 times [2024-11-14 05:47:24,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:24,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081849936] [2024-11-14 05:47:24,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:24,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:47:26,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:26,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081849936] [2024-11-14 05:47:26,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081849936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:26,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464145153] [2024-11-14 05:47:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:26,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:26,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:26,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:26,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 05:47:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:26,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-14 05:47:26,699 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:30,060 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:47:30,060 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:47:30,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464145153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:30,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:47:30,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 19 [2024-11-14 05:47:30,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896839712] [2024-11-14 05:47:30,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:30,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-14 05:47:30,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:30,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-14 05:47:30,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-14 05:47:30,065 INFO L87 Difference]: Start difference. First operand 72927 states and 104248 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:30,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:30,795 INFO L93 Difference]: Finished difference Result 108085 states and 153804 transitions. [2024-11-14 05:47:30,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-14 05:47:30,796 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-14 05:47:30,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:31,052 INFO L225 Difference]: With dead ends: 108085 [2024-11-14 05:47:31,053 INFO L226 Difference]: Without dead ends: 72929 [2024-11-14 05:47:31,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2024-11-14 05:47:31,079 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 323 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:31,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 875 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 05:47:31,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72929 states. [2024-11-14 05:47:32,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72929 to 72927. [2024-11-14 05:47:32,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72927 states, 72926 states have (on average 1.429449030524093) internal successors, (104244), 72926 states have internal predecessors, (104244), 0 states have call successors, (0), 0 states 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 05:47:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72927 states to 72927 states and 104244 transitions. [2024-11-14 05:47:32,492 INFO L78 Accepts]: Start accepts. Automaton has 72927 states and 104244 transitions. Word has length 82 [2024-11-14 05:47:32,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:32,492 INFO L471 AbstractCegarLoop]: Abstraction has 72927 states and 104244 transitions. [2024-11-14 05:47:32,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 05:47:32,493 INFO L276 IsEmpty]: Start isEmpty. Operand 72927 states and 104244 transitions. [2024-11-14 05:47:32,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-14 05:47:32,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:32,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:32,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 05:47:32,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:32,696 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:32,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:32,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1990041582, now seen corresponding path program 1 times [2024-11-14 05:47:32,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:32,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030278381] [2024-11-14 05:47:32,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:32,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:47:34,452 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:34,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030278381] [2024-11-14 05:47:34,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030278381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:34,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737641693] [2024-11-14 05:47:34,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:34,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:34,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:34,456 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:34,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 05:47:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:34,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-14 05:47:34,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:36,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 05:47:36,341 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 05:47:36,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737641693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 05:47:36,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 05:47:36,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2024-11-14 05:47:36,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621120522] [2024-11-14 05:47:36,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 05:47:36,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 05:47:36,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 05:47:36,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 05:47:36,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:47:36,344 INFO L87 Difference]: Start difference. First operand 72927 states and 104244 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 05:47:37,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 05:47:37,282 INFO L93 Difference]: Finished difference Result 142197 states and 205049 transitions. [2024-11-14 05:47:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 05:47:37,283 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 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 86 [2024-11-14 05:47:37,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 05:47:37,400 INFO L225 Difference]: With dead ends: 142197 [2024-11-14 05:47:37,400 INFO L226 Difference]: Without dead ends: 69403 [2024-11-14 05:47:37,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-14 05:47:37,430 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 233 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 05:47:37,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 499 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 05:47:37,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69403 states. [2024-11-14 05:47:38,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69403 to 38483. [2024-11-14 05:47:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38483 states, 38482 states have (on average 1.4553817369159607) internal successors, (56006), 38482 states have internal predecessors, (56006), 0 states have call successors, (0), 0 states 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 05:47:38,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38483 states to 38483 states and 56006 transitions. [2024-11-14 05:47:38,253 INFO L78 Accepts]: Start accepts. Automaton has 38483 states and 56006 transitions. Word has length 86 [2024-11-14 05:47:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 05:47:38,253 INFO L471 AbstractCegarLoop]: Abstraction has 38483 states and 56006 transitions. [2024-11-14 05:47:38,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 05:47:38,254 INFO L276 IsEmpty]: Start isEmpty. Operand 38483 states and 56006 transitions. [2024-11-14 05:47:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-14 05:47:38,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 05:47:38,255 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 05:47:38,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 05:47:38,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:38,456 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 05:47:38,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 05:47:38,457 INFO L85 PathProgramCache]: Analyzing trace with hash -146983378, now seen corresponding path program 1 times [2024-11-14 05:47:38,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 05:47:38,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122500094] [2024-11-14 05:47:38,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:38,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 05:47:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:47:39,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 05:47:39,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122500094] [2024-11-14 05:47:39,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122500094] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 05:47:39,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750708556] [2024-11-14 05:47:39,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 05:47:39,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 05:47:39,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 05:47:39,825 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 05:47:39,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b59098dc-8608-4ca1-bd8c-6d1a8cc6419d/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 05:47:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 05:47:40,149 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-14 05:47:40,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 05:47:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:47:41,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 05:47:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 05:47:45,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750708556] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 05:47:45,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1933595265] [2024-11-14 05:47:45,542 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2024-11-14 05:47:45,543 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 05:47:45,547 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 05:47:45,553 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 05:47:45,553 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs