./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.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_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/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_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/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_73799804-3e43-411e-ad42-a929af4b4f1b/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 c5f4858505c444657049a34bd1efbc3b1e97c5e32733a83c11ccaa8ea369cb2f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:48:30,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:48:30,426 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-14 03:48:30,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:48:30,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:48:30,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:48:30,472 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:48:30,472 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:48:30,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:48:30,473 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:48:30,474 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:48:30,475 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:48:30,475 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:48:30,475 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:48:30,476 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:48:30,476 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:48:30,476 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:48:30,476 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:48:30,476 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:48:30,476 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:48:30,476 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:48:30,476 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:48:30,477 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:48:30,477 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:48:30,478 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-14 03:48:30,478 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:48:30,478 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-14 03:48:30,478 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:48:30,478 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:48:30,478 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:48:30,478 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:48:30,478 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:48:30,479 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-14 03:48:30,479 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:48:30,479 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:48:30,479 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:48:30,480 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:48:30,480 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:48:30,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:48:30,480 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:48:30,480 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:48:30,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:48:30,480 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:48:30,480 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:48:30,480 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:48:30,480 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:48:30,480 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:48:30,480 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_73799804-3e43-411e-ad42-a929af4b4f1b/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 -> c5f4858505c444657049a34bd1efbc3b1e97c5e32733a83c11ccaa8ea369cb2f [2024-11-14 03:48:30,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:48:30,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:48:30,830 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:48:30,833 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:48:30,834 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:48:30,836 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c Unable to find full path for "g++" [2024-11-14 03:48:33,011 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:48:33,410 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:48:33,411 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-14 03:48:33,440 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/data/888846cf2/edb621c8bb0c4e5abd11d3f41c22baf4/FLAGeb0bb4852 [2024-11-14 03:48:33,470 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/data/888846cf2/edb621c8bb0c4e5abd11d3f41c22baf4 [2024-11-14 03:48:33,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:48:33,475 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:48:33,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:48:33,477 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:48:33,484 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:48:33,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:48:33" (1/1) ... [2024-11-14 03:48:33,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15802483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:48:33, skipping insertion in model container [2024-11-14 03:48:33,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:48:33" (1/1) ... [2024-11-14 03:48:33,543 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:48:33,892 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_73799804-3e43-411e-ad42-a929af4b4f1b/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2024-11-14 03:48:33,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:48:34,006 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:48:34,083 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_73799804-3e43-411e-ad42-a929af4b4f1b/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7806,7819] [2024-11-14 03:48:34,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:48:34,155 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:48:34,156 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:48:34 WrapperNode [2024-11-14 03:48:34,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:48:34,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:48:34,158 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:48:34,158 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:48:34,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:48:34" (1/1) ... [2024-11-14 03:48:34,190 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:48:34" (1/1) ... [2024-11-14 03:48:34,241 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 687 [2024-11-14 03:48:34,241 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:48:34,242 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:48:34,242 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:48:34,242 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:48:34,252 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:48:34" (1/1) ... [2024-11-14 03:48:34,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:48:34" (1/1) ... [2024-11-14 03:48:34,257 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:48:34" (1/1) ... [2024-11-14 03:48:34,257 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:48:34" (1/1) ... [2024-11-14 03:48:34,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:48:34" (1/1) ... [2024-11-14 03:48:34,279 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:48:34" (1/1) ... [2024-11-14 03:48:34,283 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:48:34" (1/1) ... [2024-11-14 03:48:34,285 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:48:34" (1/1) ... [2024-11-14 03:48:34,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:48:34,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:48:34,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:48:34,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:48:34,295 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:48:34" (1/1) ... [2024-11-14 03:48:34,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:48:34,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:48:34,342 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:48:34,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:48:34,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:48:34,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:48:34,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:48:34,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:48:34,576 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:48:34,578 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:48:35,535 INFO L? ?]: Removed 51 outVars from TransFormulas that were not future-live. [2024-11-14 03:48:35,535 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:48:36,018 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:48:36,019 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-14 03:48:36,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:48:36 BoogieIcfgContainer [2024-11-14 03:48:36,019 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:48:36,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:48:36,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:48:36,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:48:36,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:48:33" (1/3) ... [2024-11-14 03:48:36,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199e3a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:48:36, skipping insertion in model container [2024-11-14 03:48:36,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:48:34" (2/3) ... [2024-11-14 03:48:36,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@199e3a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:48:36, skipping insertion in model container [2024-11-14 03:48:36,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:48:36" (3/3) ... [2024-11-14 03:48:36,032 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2024-11-14 03:48:36,054 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:48:36,056 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.3.2.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 03:48:36,131 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:48:36,149 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;@6bbc82a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:48:36,149 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:48:36,156 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 03:48:36,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-14 03:48:36,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:36,167 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 03:48:36,167 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:36,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:36,173 INFO L85 PathProgramCache]: Analyzing trace with hash 566108884, now seen corresponding path program 1 times [2024-11-14 03:48:36,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:36,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542100868] [2024-11-14 03:48:36,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:36,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:36,877 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 03:48:36,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:36,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542100868] [2024-11-14 03:48:36,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542100868] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:36,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:36,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:48:36,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994688847] [2024-11-14 03:48:36,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:36,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:48:36,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:36,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:48:36,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:48:36,911 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 03:48:37,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:37,073 INFO L93 Difference]: Finished difference Result 216 states and 361 transitions. [2024-11-14 03:48:37,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:48:37,077 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 03:48:37,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:37,093 INFO L225 Difference]: With dead ends: 216 [2024-11-14 03:48:37,094 INFO L226 Difference]: Without dead ends: 146 [2024-11-14 03:48:37,099 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 03:48:37,109 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 03:48:37,111 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 03:48:37,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-14 03:48:37,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2024-11-14 03:48:37,173 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 03:48:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 215 transitions. [2024-11-14 03:48:37,186 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 215 transitions. Word has length 43 [2024-11-14 03:48:37,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:37,187 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 215 transitions. [2024-11-14 03:48:37,187 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 03:48:37,187 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 215 transitions. [2024-11-14 03:48:37,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-14 03:48:37,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:37,189 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 03:48:37,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:48:37,191 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:37,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1914990475, now seen corresponding path program 1 times [2024-11-14 03:48:37,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:37,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018864873] [2024-11-14 03:48:37,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:37,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:37,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:37,601 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 03:48:37,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:37,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018864873] [2024-11-14 03:48:37,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018864873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:37,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:37,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:48:37,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953150045] [2024-11-14 03:48:37,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:37,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:48:37,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:37,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:48:37,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:48:37,608 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 03:48:37,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:37,755 INFO L93 Difference]: Finished difference Result 321 states and 502 transitions. [2024-11-14 03:48:37,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:48:37,756 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 03:48:37,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:37,758 INFO L225 Difference]: With dead ends: 321 [2024-11-14 03:48:37,759 INFO L226 Difference]: Without dead ends: 209 [2024-11-14 03:48:37,763 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 03:48:37,765 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 95 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:48:37,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 225 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:48:37,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-14 03:48:37,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 207. [2024-11-14 03:48:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.5242718446601942) internal successors, (314), 206 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:37,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 314 transitions. [2024-11-14 03:48:37,797 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 314 transitions. Word has length 45 [2024-11-14 03:48:37,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:37,798 INFO L471 AbstractCegarLoop]: Abstraction has 207 states and 314 transitions. [2024-11-14 03:48:37,798 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 03:48:37,798 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 314 transitions. [2024-11-14 03:48:37,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-14 03:48:37,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:37,799 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 03:48:37,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:48:37,800 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:37,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:37,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1398553194, now seen corresponding path program 1 times [2024-11-14 03:48:37,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:37,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929129340] [2024-11-14 03:48:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:37,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:38,071 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 03:48:38,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:38,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929129340] [2024-11-14 03:48:38,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929129340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:38,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:38,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:48:38,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471670697] [2024-11-14 03:48:38,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:38,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:48:38,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:38,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:48:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:48:38,076 INFO L87 Difference]: Start difference. First operand 207 states and 314 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 03:48:38,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:38,178 INFO L93 Difference]: Finished difference Result 511 states and 805 transitions. [2024-11-14 03:48:38,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:48:38,179 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 03:48:38,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:38,182 INFO L225 Difference]: With dead ends: 511 [2024-11-14 03:48:38,184 INFO L226 Difference]: Without dead ends: 338 [2024-11-14 03:48:38,185 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 03:48:38,186 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 03:48:38,186 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 03:48:38,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-14 03:48:38,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2024-11-14 03:48:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 1.5552238805970149) internal successors, (521), 335 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:38,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 521 transitions. [2024-11-14 03:48:38,221 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 521 transitions. Word has length 47 [2024-11-14 03:48:38,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:38,221 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 521 transitions. [2024-11-14 03:48:38,222 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 03:48:38,222 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 521 transitions. [2024-11-14 03:48:38,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-14 03:48:38,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:38,223 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 03:48:38,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:48:38,224 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:38,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1696286242, now seen corresponding path program 1 times [2024-11-14 03:48:38,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:38,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984414228] [2024-11-14 03:48:38,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:38,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:38,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:38,497 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 03:48:38,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:38,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984414228] [2024-11-14 03:48:38,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984414228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:38,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:38,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:48:38,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824374079] [2024-11-14 03:48:38,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:38,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:48:38,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:38,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:48:38,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:48:38,501 INFO L87 Difference]: Start difference. First operand 336 states and 521 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 03:48:38,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:38,603 INFO L93 Difference]: Finished difference Result 827 states and 1312 transitions. [2024-11-14 03:48:38,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:48:38,604 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 03:48:38,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:38,609 INFO L225 Difference]: With dead ends: 827 [2024-11-14 03:48:38,609 INFO L226 Difference]: Without dead ends: 525 [2024-11-14 03:48:38,611 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 03:48:38,611 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 03:48:38,612 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 03:48:38,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-14 03:48:38,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 523. [2024-11-14 03:48:38,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 522 states have (on average 1.5727969348659003) internal successors, (821), 522 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 821 transitions. [2024-11-14 03:48:38,654 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 821 transitions. Word has length 49 [2024-11-14 03:48:38,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:38,657 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 821 transitions. [2024-11-14 03:48:38,658 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 03:48:38,658 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 821 transitions. [2024-11-14 03:48:38,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-14 03:48:38,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:38,659 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 03:48:38,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:48:38,659 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:38,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:38,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2030005373, now seen corresponding path program 1 times [2024-11-14 03:48:38,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:38,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336738301] [2024-11-14 03:48:38,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:38,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:38,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:48:38,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:38,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336738301] [2024-11-14 03:48:38,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336738301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:38,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:38,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:48:38,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381215255] [2024-11-14 03:48:38,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:38,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:48:38,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:38,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:48:38,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:48:38,872 INFO L87 Difference]: Start difference. First operand 523 states and 821 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 03:48:38,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:38,980 INFO L93 Difference]: Finished difference Result 1343 states and 2140 transitions. [2024-11-14 03:48:38,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:48:38,981 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 03:48:38,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:38,990 INFO L225 Difference]: With dead ends: 1343 [2024-11-14 03:48:38,990 INFO L226 Difference]: Without dead ends: 870 [2024-11-14 03:48:38,991 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 03:48:38,992 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 03:48:38,992 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 03:48:38,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2024-11-14 03:48:39,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 868. [2024-11-14 03:48:39,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 867 states have (on average 1.5767012687427913) internal successors, (1367), 867 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:39,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1367 transitions. [2024-11-14 03:48:39,056 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1367 transitions. Word has length 51 [2024-11-14 03:48:39,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:39,056 INFO L471 AbstractCegarLoop]: Abstraction has 868 states and 1367 transitions. [2024-11-14 03:48:39,056 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 03:48:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1367 transitions. [2024-11-14 03:48:39,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-14 03:48:39,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:39,061 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:48:39,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-14 03:48:39,062 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:39,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:39,062 INFO L85 PathProgramCache]: Analyzing trace with hash -745174181, now seen corresponding path program 1 times [2024-11-14 03:48:39,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:39,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087255825] [2024-11-14 03:48:39,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:39,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:39,249 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 03:48:39,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:39,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087255825] [2024-11-14 03:48:39,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087255825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:39,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:39,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:48:39,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493502609] [2024-11-14 03:48:39,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:39,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:48:39,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:39,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:48:39,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:48:39,251 INFO L87 Difference]: Start difference. First operand 868 states and 1367 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 03:48:39,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:39,372 INFO L93 Difference]: Finished difference Result 2175 states and 3463 transitions. [2024-11-14 03:48:39,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:48:39,375 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 03:48:39,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:39,383 INFO L225 Difference]: With dead ends: 2175 [2024-11-14 03:48:39,383 INFO L226 Difference]: Without dead ends: 1357 [2024-11-14 03:48:39,384 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 03:48:39,385 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 03:48:39,386 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 03:48:39,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2024-11-14 03:48:39,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1355. [2024-11-14 03:48:39,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1354 states have (on average 1.5834564254062038) internal successors, (2144), 1354 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 2144 transitions. [2024-11-14 03:48:39,449 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 2144 transitions. Word has length 53 [2024-11-14 03:48:39,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:39,450 INFO L471 AbstractCegarLoop]: Abstraction has 1355 states and 2144 transitions. [2024-11-14 03:48:39,450 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 03:48:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 2144 transitions. [2024-11-14 03:48:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-14 03:48:39,451 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:39,451 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 03:48:39,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-14 03:48:39,453 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:39,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:39,453 INFO L85 PathProgramCache]: Analyzing trace with hash -585568132, now seen corresponding path program 1 times [2024-11-14 03:48:39,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:39,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929200782] [2024-11-14 03:48:39,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:39,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:39,692 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 03:48:39,692 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929200782] [2024-11-14 03:48:39,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929200782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:39,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:39,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:48:39,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502079925] [2024-11-14 03:48:39,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:39,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:48:39,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:39,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:48:39,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:48:39,694 INFO L87 Difference]: Start difference. First operand 1355 states and 2144 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 03:48:40,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:40,061 INFO L93 Difference]: Finished difference Result 3443 states and 5471 transitions. [2024-11-14 03:48:40,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-14 03:48:40,061 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 03:48:40,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:40,072 INFO L225 Difference]: With dead ends: 3443 [2024-11-14 03:48:40,072 INFO L226 Difference]: Without dead ends: 2154 [2024-11-14 03:48:40,074 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 03:48:40,078 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 03:48:40,079 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 03:48:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2024-11-14 03:48:40,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2144. [2024-11-14 03:48:40,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2144 states, 2143 states have (on average 1.5762949136724218) internal successors, (3378), 2143 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:40,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 3378 transitions. [2024-11-14 03:48:40,163 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 3378 transitions. Word has length 55 [2024-11-14 03:48:40,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:40,164 INFO L471 AbstractCegarLoop]: Abstraction has 2144 states and 3378 transitions. [2024-11-14 03:48:40,165 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 03:48:40,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 3378 transitions. [2024-11-14 03:48:40,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-14 03:48:40,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:40,166 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 03:48:40,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-14 03:48:40,167 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:40,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:40,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1035247094, now seen corresponding path program 1 times [2024-11-14 03:48:40,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:40,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510812415] [2024-11-14 03:48:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:40,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:40,432 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 03:48:40,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:40,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510812415] [2024-11-14 03:48:40,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510812415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:40,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:40,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:48:40,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445490640] [2024-11-14 03:48:40,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:40,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:48:40,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:40,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:48:40,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:48:40,437 INFO L87 Difference]: Start difference. First operand 2144 states and 3378 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 03:48:40,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:40,605 INFO L93 Difference]: Finished difference Result 4224 states and 6675 transitions. [2024-11-14 03:48:40,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:48:40,606 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 03:48:40,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:40,616 INFO L225 Difference]: With dead ends: 4224 [2024-11-14 03:48:40,617 INFO L226 Difference]: Without dead ends: 2146 [2024-11-14 03:48:40,619 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 03:48:40,620 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 03:48:40,620 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 03:48:40,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2024-11-14 03:48:40,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 2144. [2024-11-14 03:48:40,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2144 states, 2143 states have (on average 1.570695286980868) internal successors, (3366), 2143 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:40,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 3366 transitions. [2024-11-14 03:48:40,698 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 3366 transitions. Word has length 56 [2024-11-14 03:48:40,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:40,698 INFO L471 AbstractCegarLoop]: Abstraction has 2144 states and 3366 transitions. [2024-11-14 03:48:40,699 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 03:48:40,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 3366 transitions. [2024-11-14 03:48:40,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-14 03:48:40,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:40,700 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 03:48:40,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-14 03:48:40,700 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:40,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:40,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2085835005, now seen corresponding path program 1 times [2024-11-14 03:48:40,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:40,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461088095] [2024-11-14 03:48:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:40,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:40,889 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 03:48:40,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:40,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461088095] [2024-11-14 03:48:40,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461088095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:40,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:40,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:48:40,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388217785] [2024-11-14 03:48:40,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:40,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:48:40,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:40,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:48:40,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:48:40,892 INFO L87 Difference]: Start difference. First operand 2144 states and 3366 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 03:48:41,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:41,039 INFO L93 Difference]: Finished difference Result 4224 states and 6651 transitions. [2024-11-14 03:48:41,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:48:41,040 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 03:48:41,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:41,050 INFO L225 Difference]: With dead ends: 4224 [2024-11-14 03:48:41,050 INFO L226 Difference]: Without dead ends: 2146 [2024-11-14 03:48:41,058 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 03:48:41,059 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 03:48:41,059 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 03:48:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2024-11-14 03:48:41,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 2144. [2024-11-14 03:48:41,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2144 states, 2143 states have (on average 1.565095660289314) internal successors, (3354), 2143 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 3354 transitions. [2024-11-14 03:48:41,148 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 3354 transitions. Word has length 57 [2024-11-14 03:48:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:41,148 INFO L471 AbstractCegarLoop]: Abstraction has 2144 states and 3354 transitions. [2024-11-14 03:48:41,149 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 03:48:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 3354 transitions. [2024-11-14 03:48:41,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-14 03:48:41,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:41,151 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 03:48:41,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-14 03:48:41,151 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:41,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:41,152 INFO L85 PathProgramCache]: Analyzing trace with hash -289763855, now seen corresponding path program 1 times [2024-11-14 03:48:41,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:41,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117504223] [2024-11-14 03:48:41,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:41,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:41,365 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 03:48:41,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:41,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117504223] [2024-11-14 03:48:41,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117504223] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:41,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:41,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:48:41,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019238704] [2024-11-14 03:48:41,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:41,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-14 03:48:41,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:41,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-14 03:48:41,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-14 03:48:41,367 INFO L87 Difference]: Start difference. First operand 2144 states and 3354 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 03:48:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:41,511 INFO L93 Difference]: Finished difference Result 4224 states and 6627 transitions. [2024-11-14 03:48:41,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-14 03:48:41,512 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 03:48:41,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:41,521 INFO L225 Difference]: With dead ends: 4224 [2024-11-14 03:48:41,522 INFO L226 Difference]: Without dead ends: 2146 [2024-11-14 03:48:41,524 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 03:48:41,525 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 03:48:41,529 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 03:48:41,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2024-11-14 03:48:41,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 2144. [2024-11-14 03:48:41,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2144 states, 2143 states have (on average 1.5594960335977601) internal successors, (3342), 2143 states have internal predecessors, (3342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 3342 transitions. [2024-11-14 03:48:41,616 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 3342 transitions. Word has length 58 [2024-11-14 03:48:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:41,616 INFO L471 AbstractCegarLoop]: Abstraction has 2144 states and 3342 transitions. [2024-11-14 03:48:41,617 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 03:48:41,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 3342 transitions. [2024-11-14 03:48:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-14 03:48:41,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:41,618 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 03:48:41,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-14 03:48:41,618 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:41,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:41,619 INFO L85 PathProgramCache]: Analyzing trace with hash -807501630, now seen corresponding path program 1 times [2024-11-14 03:48:41,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:41,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576443202] [2024-11-14 03:48:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:41,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:42,013 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 03:48:42,014 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:42,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576443202] [2024-11-14 03:48:42,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576443202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:42,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:42,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:48:42,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374342879] [2024-11-14 03:48:42,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:42,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:48:42,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:42,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:48:42,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:48:42,015 INFO L87 Difference]: Start difference. First operand 2144 states and 3342 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 03:48:42,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:42,250 INFO L93 Difference]: Finished difference Result 4224 states and 6603 transitions. [2024-11-14 03:48:42,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:48:42,250 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 03:48:42,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:42,261 INFO L225 Difference]: With dead ends: 4224 [2024-11-14 03:48:42,262 INFO L226 Difference]: Without dead ends: 2146 [2024-11-14 03:48:42,265 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 03:48:42,266 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 75 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:48:42,266 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 448 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:48:42,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2146 states. [2024-11-14 03:48:42,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2146 to 2144. [2024-11-14 03:48:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2144 states, 2143 states have (on average 1.5557629491367242) internal successors, (3334), 2143 states have internal predecessors, (3334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:42,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 3334 transitions. [2024-11-14 03:48:42,359 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 3334 transitions. Word has length 60 [2024-11-14 03:48:42,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:42,360 INFO L471 AbstractCegarLoop]: Abstraction has 2144 states and 3334 transitions. [2024-11-14 03:48:42,360 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 03:48:42,360 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 3334 transitions. [2024-11-14 03:48:42,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-14 03:48:42,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:42,361 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 03:48:42,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-14 03:48:42,361 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:42,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:42,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2077186613, now seen corresponding path program 1 times [2024-11-14 03:48:42,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:42,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655494324] [2024-11-14 03:48:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:42,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:42,708 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 03:48:42,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:42,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655494324] [2024-11-14 03:48:42,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655494324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:42,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:42,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-14 03:48:42,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358547159] [2024-11-14 03:48:42,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:42,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:48:42,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:42,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:48:42,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:48:42,710 INFO L87 Difference]: Start difference. First operand 2144 states and 3334 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 03:48:42,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:42,934 INFO L93 Difference]: Finished difference Result 5396 states and 8389 transitions. [2024-11-14 03:48:42,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:48:42,934 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 03:48:42,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:42,948 INFO L225 Difference]: With dead ends: 5396 [2024-11-14 03:48:42,948 INFO L226 Difference]: Without dead ends: 3318 [2024-11-14 03:48:42,951 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 03:48:42,951 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 147 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:48:42,951 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 361 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:48:42,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3318 states. [2024-11-14 03:48:43,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3318 to 3316. [2024-11-14 03:48:43,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3316 states, 3315 states have (on average 1.5457013574660634) internal successors, (5124), 3315 states have internal predecessors, (5124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:43,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 5124 transitions. [2024-11-14 03:48:43,082 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 5124 transitions. Word has length 63 [2024-11-14 03:48:43,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:43,082 INFO L471 AbstractCegarLoop]: Abstraction has 3316 states and 5124 transitions. [2024-11-14 03:48:43,083 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 03:48:43,083 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 5124 transitions. [2024-11-14 03:48:43,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-14 03:48:43,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:43,084 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 03:48:43,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-14 03:48:43,084 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:43,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:43,085 INFO L85 PathProgramCache]: Analyzing trace with hash -21270464, now seen corresponding path program 1 times [2024-11-14 03:48:43,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:43,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306273448] [2024-11-14 03:48:43,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:43,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:44,090 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 03:48:44,090 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:44,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306273448] [2024-11-14 03:48:44,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306273448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:44,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:44,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:48:44,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625846047] [2024-11-14 03:48:44,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:44,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:48:44,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:44,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:48:44,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:48:44,092 INFO L87 Difference]: Start difference. First operand 3316 states and 5124 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 03:48:44,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:44,203 INFO L93 Difference]: Finished difference Result 9603 states and 14862 transitions. [2024-11-14 03:48:44,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:48:44,204 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 03:48:44,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:44,240 INFO L225 Difference]: With dead ends: 9603 [2024-11-14 03:48:44,240 INFO L226 Difference]: Without dead ends: 6350 [2024-11-14 03:48:44,245 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 03:48:44,245 INFO L432 NwaCegarLoop]: 149 mSDtfsCounter, 353 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:48:44,246 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 277 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:48:44,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6350 states. [2024-11-14 03:48:44,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6350 to 6348. [2024-11-14 03:48:44,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6348 states, 6347 states have (on average 1.5391523554435167) internal successors, (9769), 6347 states have internal predecessors, (9769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6348 states to 6348 states and 9769 transitions. [2024-11-14 03:48:44,468 INFO L78 Accepts]: Start accepts. Automaton has 6348 states and 9769 transitions. Word has length 64 [2024-11-14 03:48:44,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:44,468 INFO L471 AbstractCegarLoop]: Abstraction has 6348 states and 9769 transitions. [2024-11-14 03:48:44,469 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 03:48:44,469 INFO L276 IsEmpty]: Start isEmpty. Operand 6348 states and 9769 transitions. [2024-11-14 03:48:44,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-14 03:48:44,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:44,469 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 03:48:44,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-14 03:48:44,470 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:44,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:44,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1779815412, now seen corresponding path program 1 times [2024-11-14 03:48:44,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:44,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800960547] [2024-11-14 03:48:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:44,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:44,578 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 03:48:44,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:44,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800960547] [2024-11-14 03:48:44,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800960547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:44,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:44,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:48:44,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890255876] [2024-11-14 03:48:44,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:44,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:48:44,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:44,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:48:44,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:48:44,579 INFO L87 Difference]: Start difference. First operand 6348 states and 9769 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 03:48:44,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:44,762 INFO L93 Difference]: Finished difference Result 14865 states and 22964 transitions. [2024-11-14 03:48:44,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:48:44,763 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 03:48:44,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:44,807 INFO L225 Difference]: With dead ends: 14865 [2024-11-14 03:48:44,809 INFO L226 Difference]: Without dead ends: 8584 [2024-11-14 03:48:44,815 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 03:48:44,815 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 90 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 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 03:48:44,815 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [90 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 03:48:44,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8584 states. [2024-11-14 03:48:44,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8584 to 8582. [2024-11-14 03:48:45,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8582 states, 8581 states have (on average 1.5308239132968187) internal successors, (13136), 8581 states have internal predecessors, (13136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:45,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8582 states to 8582 states and 13136 transitions. [2024-11-14 03:48:45,045 INFO L78 Accepts]: Start accepts. Automaton has 8582 states and 13136 transitions. Word has length 65 [2024-11-14 03:48:45,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:45,045 INFO L471 AbstractCegarLoop]: Abstraction has 8582 states and 13136 transitions. [2024-11-14 03:48:45,046 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 03:48:45,046 INFO L276 IsEmpty]: Start isEmpty. Operand 8582 states and 13136 transitions. [2024-11-14 03:48:45,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-14 03:48:45,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:45,047 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 03:48:45,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-14 03:48:45,048 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:45,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:45,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2062324012, now seen corresponding path program 1 times [2024-11-14 03:48:45,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:45,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973270289] [2024-11-14 03:48:45,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:45,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:45,135 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 03:48:45,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:45,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973270289] [2024-11-14 03:48:45,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973270289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:45,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:45,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:48:45,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484568050] [2024-11-14 03:48:45,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:45,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:48:45,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:45,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:48:45,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:48:45,137 INFO L87 Difference]: Start difference. First operand 8582 states and 13136 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 03:48:45,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:45,344 INFO L93 Difference]: Finished difference Result 20649 states and 31822 transitions. [2024-11-14 03:48:45,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:48:45,345 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 03:48:45,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:45,377 INFO L225 Difference]: With dead ends: 20649 [2024-11-14 03:48:45,377 INFO L226 Difference]: Without dead ends: 12108 [2024-11-14 03:48:45,387 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 03:48:45,388 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 96 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 256 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 03:48:45,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 256 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:48:45,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12108 states. [2024-11-14 03:48:45,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12108 to 12106. [2024-11-14 03:48:45,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12106 states, 12105 states have (on average 1.520033044196613) internal successors, (18400), 12105 states have internal predecessors, (18400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:45,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12106 states to 12106 states and 18400 transitions. [2024-11-14 03:48:45,746 INFO L78 Accepts]: Start accepts. Automaton has 12106 states and 18400 transitions. Word has length 65 [2024-11-14 03:48:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:45,746 INFO L471 AbstractCegarLoop]: Abstraction has 12106 states and 18400 transitions. [2024-11-14 03:48:45,747 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 03:48:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 12106 states and 18400 transitions. [2024-11-14 03:48:45,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-14 03:48:45,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:45,748 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 03:48:45,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-14 03:48:45,748 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:45,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:45,749 INFO L85 PathProgramCache]: Analyzing trace with hash 871977517, now seen corresponding path program 1 times [2024-11-14 03:48:45,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:45,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567130025] [2024-11-14 03:48:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:45,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:45,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:45,994 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 03:48:45,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:45,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567130025] [2024-11-14 03:48:45,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567130025] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:45,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:45,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:48:45,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199335920] [2024-11-14 03:48:45,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:45,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:48:45,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:45,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:48:45,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:48:45,999 INFO L87 Difference]: Start difference. First operand 12106 states and 18400 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 03:48:46,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:46,216 INFO L93 Difference]: Finished difference Result 24149 states and 36725 transitions. [2024-11-14 03:48:46,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:48:46,217 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 03:48:46,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:46,254 INFO L225 Difference]: With dead ends: 24149 [2024-11-14 03:48:46,255 INFO L226 Difference]: Without dead ends: 12106 [2024-11-14 03:48:46,270 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 03:48:46,271 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 335 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 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 03:48:46,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 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 03:48:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12106 states. [2024-11-14 03:48:46,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12106 to 12106. [2024-11-14 03:48:46,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12106 states, 12105 states have (on average 1.5024370095002064) internal successors, (18187), 12105 states have internal predecessors, (18187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:46,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12106 states to 12106 states and 18187 transitions. [2024-11-14 03:48:46,681 INFO L78 Accepts]: Start accepts. Automaton has 12106 states and 18187 transitions. Word has length 68 [2024-11-14 03:48:46,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:46,682 INFO L471 AbstractCegarLoop]: Abstraction has 12106 states and 18187 transitions. [2024-11-14 03:48:46,682 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 03:48:46,682 INFO L276 IsEmpty]: Start isEmpty. Operand 12106 states and 18187 transitions. [2024-11-14 03:48:46,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-14 03:48:46,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:46,683 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 03:48:46,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-14 03:48:46,684 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:46,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:46,685 INFO L85 PathProgramCache]: Analyzing trace with hash 374884050, now seen corresponding path program 1 times [2024-11-14 03:48:46,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:46,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584242587] [2024-11-14 03:48:46,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:46,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:47,347 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 03:48:47,348 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:47,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584242587] [2024-11-14 03:48:47,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584242587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:47,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:47,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-14 03:48:47,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212994545] [2024-11-14 03:48:47,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:47,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:48:47,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:47,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:48:47,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-14 03:48:47,350 INFO L87 Difference]: Start difference. First operand 12106 states and 18187 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 03:48:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:47,587 INFO L93 Difference]: Finished difference Result 12130 states and 18219 transitions. [2024-11-14 03:48:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:48:47,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 03:48:47,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:47,617 INFO L225 Difference]: With dead ends: 12130 [2024-11-14 03:48:47,617 INFO L226 Difference]: Without dead ends: 12128 [2024-11-14 03:48:47,621 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 03:48:47,621 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 62 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:48:47,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 606 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-14 03:48:47,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12128 states. [2024-11-14 03:48:47,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12128 to 12126. [2024-11-14 03:48:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12126 states, 12125 states have (on average 1.5004536082474227) internal successors, (18193), 12125 states have internal predecessors, (18193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12126 states to 12126 states and 18193 transitions. [2024-11-14 03:48:47,906 INFO L78 Accepts]: Start accepts. Automaton has 12126 states and 18193 transitions. Word has length 68 [2024-11-14 03:48:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:47,907 INFO L471 AbstractCegarLoop]: Abstraction has 12126 states and 18193 transitions. [2024-11-14 03:48:47,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 03:48:47,907 INFO L276 IsEmpty]: Start isEmpty. Operand 12126 states and 18193 transitions. [2024-11-14 03:48:47,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-14 03:48:47,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:47,909 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] [2024-11-14 03:48:47,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-14 03:48:47,910 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:47,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:47,913 INFO L85 PathProgramCache]: Analyzing trace with hash -132365180, now seen corresponding path program 1 times [2024-11-14 03:48:47,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:47,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962970650] [2024-11-14 03:48:47,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:47,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:50,334 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 03:48:50,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:50,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962970650] [2024-11-14 03:48:50,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962970650] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:48:50,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960038458] [2024-11-14 03:48:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:50,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:48:50,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:48:50,338 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:48:50,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:48:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:50,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-14 03:48:50,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:48:54,657 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 03:48:54,658 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:48:54,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960038458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:54,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:48:54,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 21 [2024-11-14 03:48:54,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519488551] [2024-11-14 03:48:54,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:54,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-14 03:48:54,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:54,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-14 03:48:54,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-11-14 03:48:54,661 INFO L87 Difference]: Start difference. First operand 12126 states and 18193 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:55,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:55,159 INFO L93 Difference]: Finished difference Result 24535 states and 36772 transitions. [2024-11-14 03:48:55,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-14 03:48:55,160 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-14 03:48:55,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:55,190 INFO L225 Difference]: With dead ends: 24535 [2024-11-14 03:48:55,190 INFO L226 Difference]: Without dead ends: 12489 [2024-11-14 03:48:55,201 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-11-14 03:48:55,201 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 533 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 533 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-14 03:48:55,202 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [533 Valid, 630 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-14 03:48:55,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12489 states. [2024-11-14 03:48:55,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12489 to 12489. [2024-11-14 03:48:55,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12489 states, 12488 states have (on average 1.4941543882126842) internal successors, (18659), 12488 states have internal predecessors, (18659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:55,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12489 states to 12489 states and 18659 transitions. [2024-11-14 03:48:55,409 INFO L78 Accepts]: Start accepts. Automaton has 12489 states and 18659 transitions. Word has length 78 [2024-11-14 03:48:55,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:55,409 INFO L471 AbstractCegarLoop]: Abstraction has 12489 states and 18659 transitions. [2024-11-14 03:48:55,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:55,409 INFO L276 IsEmpty]: Start isEmpty. Operand 12489 states and 18659 transitions. [2024-11-14 03:48:55,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-14 03:48:55,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:55,411 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] [2024-11-14 03:48:55,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-14 03:48:55,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-14 03:48:55,616 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:55,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:55,616 INFO L85 PathProgramCache]: Analyzing trace with hash 311313488, now seen corresponding path program 1 times [2024-11-14 03:48:55,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:55,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203935184] [2024-11-14 03:48:55,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:55,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:55,742 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 03:48:55,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:55,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203935184] [2024-11-14 03:48:55,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203935184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:55,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:55,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:48:55,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783199517] [2024-11-14 03:48:55,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:55,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:48:55,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:55,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:48:55,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:48:55,745 INFO L87 Difference]: Start difference. First operand 12489 states and 18659 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:55,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:55,925 INFO L93 Difference]: Finished difference Result 28826 states and 43272 transitions. [2024-11-14 03:48:55,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:48:55,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-14 03:48:55,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:55,970 INFO L225 Difference]: With dead ends: 28826 [2024-11-14 03:48:55,970 INFO L226 Difference]: Without dead ends: 16469 [2024-11-14 03:48:55,984 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 03:48:55,985 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 78 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 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 03:48:55,986 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 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 03:48:55,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16469 states. [2024-11-14 03:48:56,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16469 to 16467. [2024-11-14 03:48:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16467 states, 16466 states have (on average 1.4846957366695008) internal successors, (24447), 16466 states have internal predecessors, (24447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:56,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16467 states to 16467 states and 24447 transitions. [2024-11-14 03:48:56,322 INFO L78 Accepts]: Start accepts. Automaton has 16467 states and 24447 transitions. Word has length 79 [2024-11-14 03:48:56,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:56,323 INFO L471 AbstractCegarLoop]: Abstraction has 16467 states and 24447 transitions. [2024-11-14 03:48:56,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:56,323 INFO L276 IsEmpty]: Start isEmpty. Operand 16467 states and 24447 transitions. [2024-11-14 03:48:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-14 03:48:56,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:56,325 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 03:48:56,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-14 03:48:56,326 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:56,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:56,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1027610639, now seen corresponding path program 1 times [2024-11-14 03:48:56,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:56,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689384594] [2024-11-14 03:48:56,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:56,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:56,528 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 03:48:56,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:56,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689384594] [2024-11-14 03:48:56,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689384594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:56,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:56,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:48:56,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604506437] [2024-11-14 03:48:56,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:56,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:48:56,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:48:56,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:48:56,531 INFO L87 Difference]: Start difference. First operand 16467 states and 24447 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:56,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:56,723 INFO L93 Difference]: Finished difference Result 32802 states and 48739 transitions. [2024-11-14 03:48:56,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:48:56,724 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-14 03:48:56,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:56,773 INFO L225 Difference]: With dead ends: 32802 [2024-11-14 03:48:56,773 INFO L226 Difference]: Without dead ends: 16467 [2024-11-14 03:48:56,784 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 03:48:56,785 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 317 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:48:56,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 124 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:48:56,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16467 states. [2024-11-14 03:48:57,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16467 to 16467. [2024-11-14 03:48:57,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16467 states, 16466 states have (on average 1.4652617514879145) internal successors, (24127), 16466 states have internal predecessors, (24127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:57,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16467 states to 16467 states and 24127 transitions. [2024-11-14 03:48:57,053 INFO L78 Accepts]: Start accepts. Automaton has 16467 states and 24127 transitions. Word has length 82 [2024-11-14 03:48:57,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:57,053 INFO L471 AbstractCegarLoop]: Abstraction has 16467 states and 24127 transitions. [2024-11-14 03:48:57,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:57,053 INFO L276 IsEmpty]: Start isEmpty. Operand 16467 states and 24127 transitions. [2024-11-14 03:48:57,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-14 03:48:57,055 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:57,055 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 03:48:57,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-14 03:48:57,055 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:57,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:57,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1113980394, now seen corresponding path program 1 times [2024-11-14 03:48:57,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:57,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899613256] [2024-11-14 03:48:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:57,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:48:58,382 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 03:48:58,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:48:58,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899613256] [2024-11-14 03:48:58,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899613256] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:48:58,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:48:58,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:48:58,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246228742] [2024-11-14 03:48:58,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:48:58,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:48:58,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:48:58,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:48:58,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:48:58,385 INFO L87 Difference]: Start difference. First operand 16467 states and 24127 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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 03:48:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:48:58,549 INFO L93 Difference]: Finished difference Result 32732 states and 47741 transitions. [2024-11-14 03:48:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:48:58,550 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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 03:48:58,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:48:58,617 INFO L225 Difference]: With dead ends: 32732 [2024-11-14 03:48:58,618 INFO L226 Difference]: Without dead ends: 24269 [2024-11-14 03:48:58,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:48:58,630 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 270 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:48:58,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 277 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:48:58,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24269 states. [2024-11-14 03:48:59,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24269 to 24267. [2024-11-14 03:48:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24267 states, 24266 states have (on average 1.4464683095689441) internal successors, (35100), 24266 states have internal predecessors, (35100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:48:59,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24267 states to 24267 states and 35100 transitions. [2024-11-14 03:48:59,107 INFO L78 Accepts]: Start accepts. Automaton has 24267 states and 35100 transitions. Word has length 82 [2024-11-14 03:48:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:48:59,108 INFO L471 AbstractCegarLoop]: Abstraction has 24267 states and 35100 transitions. [2024-11-14 03:48:59,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 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 03:48:59,108 INFO L276 IsEmpty]: Start isEmpty. Operand 24267 states and 35100 transitions. [2024-11-14 03:48:59,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-14 03:48:59,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:48:59,111 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 03:48:59,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-14 03:48:59,111 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:48:59,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:48:59,113 INFO L85 PathProgramCache]: Analyzing trace with hash 981955734, now seen corresponding path program 1 times [2024-11-14 03:48:59,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:48:59,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41121720] [2024-11-14 03:48:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:48:59,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:48:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:00,506 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:49:00,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:49:00,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41121720] [2024-11-14 03:49:00,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41121720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:49:00,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:49:00,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-14 03:49:00,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380244307] [2024-11-14 03:49:00,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:49:00,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-14 03:49:00,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:49:00,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-14 03:49:00,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:49:00,509 INFO L87 Difference]: Start difference. First operand 24267 states and 35100 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:49:00,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:49:00,726 INFO L93 Difference]: Finished difference Result 40655 states and 58892 transitions. [2024-11-14 03:49:00,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-14 03:49:00,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2024-11-14 03:49:00,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:49:00,800 INFO L225 Difference]: With dead ends: 40655 [2024-11-14 03:49:00,800 INFO L226 Difference]: Without dead ends: 24314 [2024-11-14 03:49:00,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-14 03:49:00,818 INFO L432 NwaCegarLoop]: 155 mSDtfsCounter, 254 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:49:00,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 281 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:49:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24314 states. [2024-11-14 03:49:01,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24314 to 24168. [2024-11-14 03:49:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24168 states, 24167 states have (on average 1.4473455538544295) internal successors, (34978), 24167 states have internal predecessors, (34978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:49:01,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24168 states to 24168 states and 34978 transitions. [2024-11-14 03:49:01,375 INFO L78 Accepts]: Start accepts. Automaton has 24168 states and 34978 transitions. Word has length 82 [2024-11-14 03:49:01,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:49:01,376 INFO L471 AbstractCegarLoop]: Abstraction has 24168 states and 34978 transitions. [2024-11-14 03:49:01,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:49:01,376 INFO L276 IsEmpty]: Start isEmpty. Operand 24168 states and 34978 transitions. [2024-11-14 03:49:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-14 03:49:01,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:49:01,378 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 03:49:01,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-14 03:49:01,379 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:49:01,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:49:01,379 INFO L85 PathProgramCache]: Analyzing trace with hash -146983378, now seen corresponding path program 1 times [2024-11-14 03:49:01,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:49:01,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780484005] [2024-11-14 03:49:01,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:01,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:49:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:03,002 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 03:49:03,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:49:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780484005] [2024-11-14 03:49:03,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780484005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:49:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454795675] [2024-11-14 03:49:03,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:49:03,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:49:03,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:49:03,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:49:03,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:49:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:49:03,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-14 03:49:03,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:49:05,148 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:05,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:49:12,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-14 03:49:12,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454795675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:49:12,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1895742392] [2024-11-14 03:49:12,136 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2024-11-14 03:49:12,136 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:49:12,140 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:49:12,147 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:49:12,148 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:49:26,875 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:49:52,199 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '435681#(and (= ~nomsg~0 ~p12_new~0) (<= 2 (+ ~st3~0 ~st2~0 ~st1~0)) (<= 0 ~mode3~0) (<= ~mode2~0 1) (<= ~mode3~0 1) (= ~nomsg~0 ~p21_new~0) (= ~nomsg~0 ~p32_new~0) (= ~p23_new~0 ~nomsg~0) (exists ((|v_ULTIMATE.start_main_~assert__arg~0#1_31| Int) (|v_ULTIMATE.start_main_~__tmp_1~0#1_5| Int)) (and (= |v_ULTIMATE.start_main_~__tmp_1~0#1_5| 0) (= 0 |v_ULTIMATE.start_main_~assert__arg~0#1_31|) (= ~__return_1434~0 0))) (= ~p31_new~0 ~nomsg~0) (= ~nomsg~0 ~p13_new~0))' at error location [2024-11-14 03:49:52,199 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:49:52,199 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:49:52,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 14] total 34 [2024-11-14 03:49:52,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714259035] [2024-11-14 03:49:52,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:49:52,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-14 03:49:52,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:49:52,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-14 03:49:52,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1265, Invalid=8635, Unknown=0, NotChecked=0, Total=9900 [2024-11-14 03:49:52,204 INFO L87 Difference]: Start difference. First operand 24168 states and 34978 transitions. Second operand has 34 states, 34 states have (on average 6.882352941176471) internal successors, (234), 34 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:50:18,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:50:18,251 INFO L93 Difference]: Finished difference Result 360299 states and 536222 transitions. [2024-11-14 03:50:18,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2024-11-14 03:50:18,252 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.882352941176471) internal successors, (234), 34 states have internal predecessors, (234), 0 states have call successors, (0), 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 03:50:18,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:50:19,095 INFO L225 Difference]: With dead ends: 360299 [2024-11-14 03:50:19,095 INFO L226 Difference]: Without dead ends: 336257 [2024-11-14 03:50:19,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 161 SyntacticMatches, 7 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21963 ImplicationChecksByTransitivity, 44.2s TimeCoverageRelationStatistics Valid=6829, Invalid=39611, Unknown=0, NotChecked=0, Total=46440 [2024-11-14 03:50:19,183 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 4561 mSDsluCounter, 8912 mSDsCounter, 0 mSdLazyCounter, 3522 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4561 SdHoareTripleChecker+Valid, 9094 SdHoareTripleChecker+Invalid, 3638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 3522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-14 03:50:19,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4561 Valid, 9094 Invalid, 3638 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [116 Valid, 3522 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-14 03:50:19,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336257 states. [2024-11-14 03:50:23,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336257 to 228911. [2024-11-14 03:50:23,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228911 states, 228910 states have (on average 1.4838888646192827) internal successors, (339677), 228910 states have internal predecessors, (339677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:50:24,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228911 states to 228911 states and 339677 transitions. [2024-11-14 03:50:24,066 INFO L78 Accepts]: Start accepts. Automaton has 228911 states and 339677 transitions. Word has length 86 [2024-11-14 03:50:24,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:50:24,066 INFO L471 AbstractCegarLoop]: Abstraction has 228911 states and 339677 transitions. [2024-11-14 03:50:24,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.882352941176471) internal successors, (234), 34 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:50:24,066 INFO L276 IsEmpty]: Start isEmpty. Operand 228911 states and 339677 transitions. [2024-11-14 03:50:24,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-14 03:50:24,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:50:24,068 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:50:24,089 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-14 03:50:24,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-14 03:50:24,269 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:50:24,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:50:24,269 INFO L85 PathProgramCache]: Analyzing trace with hash -324021608, now seen corresponding path program 1 times [2024-11-14 03:50:24,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:50:24,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976330214] [2024-11-14 03:50:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:24,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:50:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:50:24,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:50:24,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976330214] [2024-11-14 03:50:24,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976330214] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:50:24,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274330990] [2024-11-14 03:50:24,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:50:24,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:50:24,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:50:24,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:50:24,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-14 03:50:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:50:24,919 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:50:24,922 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:50:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:50:25,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:50:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-14 03:50:25,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274330990] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:50:25,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2074488674] [2024-11-14 03:50:25,569 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2024-11-14 03:50:25,569 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:50:25,570 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:50:25,570 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:50:25,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:50:40,509 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:51:02,417 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1025711#(and (= ~nomsg~0 ~p12_new~0) (<= 0 ~mode3~0) (exists ((|v_ULTIMATE.start_main_~__tmp_1~0#1_5| Int) (|v_ULTIMATE.start_main_~assert__arg~0#1_38| Int)) (and (= 0 |v_ULTIMATE.start_main_~assert__arg~0#1_38|) (= |v_ULTIMATE.start_main_~__tmp_1~0#1_5| 0) (= ~__return_1434~0 0))) (<= ~mode2~0 1) (<= (+ ~st3~0 ~st2~0 ~st1~0) 1) (<= ~mode3~0 1) (= ~nomsg~0 ~p21_new~0) (= ~nomsg~0 ~p32_new~0) (= ~p23_new~0 ~nomsg~0) (<= 2 (+ ~nl1~0 ~st1~0)) (= ~p31_new~0 ~nomsg~0) (= ~nomsg~0 ~p13_new~0))' at error location [2024-11-14 03:51:02,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:51:02,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:51:02,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-14 03:51:02,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692013245] [2024-11-14 03:51:02,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:51:02,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:51:02,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:51:02,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:51:02,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=661, Invalid=4451, Unknown=0, NotChecked=0, Total=5112 [2024-11-14 03:51:02,420 INFO L87 Difference]: Start difference. First operand 228911 states and 339677 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:51:05,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:51:05,200 INFO L93 Difference]: Finished difference Result 669207 states and 991280 transitions. [2024-11-14 03:51:05,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:51:05,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 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 87 [2024-11-14 03:51:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:51:06,998 INFO L225 Difference]: With dead ends: 669207 [2024-11-14 03:51:06,999 INFO L226 Difference]: Without dead ends: 440518 [2024-11-14 03:51:07,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 186 SyntacticMatches, 8 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1959 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=661, Invalid=4451, Unknown=0, NotChecked=0, Total=5112 [2024-11-14 03:51:07,628 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 279 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:51:07,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 501 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:51:08,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440518 states. [2024-11-14 03:51:13,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440518 to 282958. [2024-11-14 03:51:13,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282958 states, 282957 states have (on average 1.462798234360698) internal successors, (413909), 282957 states have internal predecessors, (413909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:51:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282958 states to 282958 states and 413909 transitions. [2024-11-14 03:51:14,680 INFO L78 Accepts]: Start accepts. Automaton has 282958 states and 413909 transitions. Word has length 87 [2024-11-14 03:51:14,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:51:14,680 INFO L471 AbstractCegarLoop]: Abstraction has 282958 states and 413909 transitions. [2024-11-14 03:51:14,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:51:14,680 INFO L276 IsEmpty]: Start isEmpty. Operand 282958 states and 413909 transitions. [2024-11-14 03:51:14,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-14 03:51:14,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:51:14,682 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:51:14,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-14 03:51:14,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-14 03:51:14,883 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:51:14,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:51:14,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1512681419, now seen corresponding path program 1 times [2024-11-14 03:51:14,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:51:14,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202189393] [2024-11-14 03:51:14,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:14,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:51:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:16,029 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:51:16,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:51:16,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202189393] [2024-11-14 03:51:16,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202189393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:51:16,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915553889] [2024-11-14 03:51:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:51:16,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:51:16,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:51:16,034 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:51:16,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-14 03:51:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:51:16,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:51:16,354 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:51:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:51:16,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:51:17,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-14 03:51:17,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915553889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:51:17,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1335862464] [2024-11-14 03:51:17,116 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2024-11-14 03:51:17,119 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:51:17,120 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:51:17,120 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:51:17,120 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:51:28,696 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-14 03:51:49,797 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1978470#(and (<= (+ ~nl1~0 ~st1~0) 1) (= ~nomsg~0 ~p12_new~0) (<= 0 ~mode3~0) (<= ~mode2~0 1) (<= (+ ~st3~0 ~st2~0 ~st1~0) 1) (exists ((|v_ULTIMATE.start_main_~__tmp_1~0#1_5| Int) (|v_ULTIMATE.start_main_~assert__arg~0#1_44| Int)) (and (= 0 |v_ULTIMATE.start_main_~assert__arg~0#1_44|) (= |v_ULTIMATE.start_main_~__tmp_1~0#1_5| 0) (= ~__return_1434~0 0))) (<= ~mode3~0 1) (= ~nomsg~0 ~p21_new~0) (= ~nomsg~0 ~p32_new~0) (= ~p23_new~0 ~nomsg~0) (<= 2 (+ ~nl2~0 ~st2~0)) (= ~p31_new~0 ~nomsg~0) (= ~nomsg~0 ~p13_new~0))' at error location [2024-11-14 03:51:49,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2024-11-14 03:51:49,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-14 03:51:49,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-14 03:51:49,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281938788] [2024-11-14 03:51:49,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-14 03:51:49,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:51:49,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:51:49,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:51:49,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=659, Invalid=4453, Unknown=0, NotChecked=0, Total=5112 [2024-11-14 03:51:49,806 INFO L87 Difference]: Start difference. First operand 282958 states and 413909 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:51:51,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:51:51,801 INFO L93 Difference]: Finished difference Result 796562 states and 1169970 transitions. [2024-11-14 03:51:51,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:51:51,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 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 88 [2024-11-14 03:51:51,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:51:52,615 INFO L225 Difference]: With dead ends: 796562 [2024-11-14 03:51:52,615 INFO L226 Difference]: Without dead ends: 555813 [2024-11-14 03:51:52,807 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 189 SyntacticMatches, 8 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1962 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=659, Invalid=4453, Unknown=0, NotChecked=0, Total=5112 [2024-11-14 03:51:52,807 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 380 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:51:52,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 426 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-14 03:51:53,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555813 states. [2024-11-14 03:52:02,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555813 to 348310. [2024-11-14 03:52:02,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348310 states, 348309 states have (on average 1.4493079420859065) internal successors, (504807), 348309 states have internal predecessors, (504807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:03,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348310 states to 348310 states and 504807 transitions. [2024-11-14 03:52:03,595 INFO L78 Accepts]: Start accepts. Automaton has 348310 states and 504807 transitions. Word has length 88 [2024-11-14 03:52:03,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:52:03,597 INFO L471 AbstractCegarLoop]: Abstraction has 348310 states and 504807 transitions. [2024-11-14 03:52:03,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-14 03:52:03,597 INFO L276 IsEmpty]: Start isEmpty. Operand 348310 states and 504807 transitions. [2024-11-14 03:52:03,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-14 03:52:03,599 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:52:03,599 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:52:03,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-14 03:52:03,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-14 03:52:03,800 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:52:03,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:52:03,803 INFO L85 PathProgramCache]: Analyzing trace with hash 298128127, now seen corresponding path program 1 times [2024-11-14 03:52:03,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:52:03,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034788432] [2024-11-14 03:52:03,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:03,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:52:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:52:05,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:52:05,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034788432] [2024-11-14 03:52:05,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034788432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:52:05,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680634594] [2024-11-14 03:52:05,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:52:05,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:52:05,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:52:05,149 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:52:05,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73799804-3e43-411e-ad42-a929af4b4f1b/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-14 03:52:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:52:05,400 INFO L255 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-14 03:52:05,405 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:52:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:52:05,778 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:52:06,065 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-14 03:52:06,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680634594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:52:06,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [4993740] [2024-11-14 03:52:06,068 INFO L159 IcfgInterpreter]: Started Sifa with 77 locations of interest [2024-11-14 03:52:06,068 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:52:06,069 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:52:06,069 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:52:06,069 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs