./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.3.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_8960c443-d151-43bd-b923-1dfe0eb0d5d2/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8960c443-d151-43bd-b923-1dfe0eb0d5d2/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8960c443-d151-43bd-b923-1dfe0eb0d5d2/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8960c443-d151-43bd-b923-1dfe0eb0d5d2/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.3.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8960c443-d151-43bd-b923-1dfe0eb0d5d2/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8960c443-d151-43bd-b923-1dfe0eb0d5d2/bin/uautomizer-verify-qhAvR1uOyd --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 04eb973983c9ccd9d9a2f7bf0254b11977aff2be461e481330083f8f8bce39f7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:07:49,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:07:49,252 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8960c443-d151-43bd-b923-1dfe0eb0d5d2/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-13 15:07:49,263 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:07:49,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:07:49,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:07:49,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:07:49,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:07:49,300 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:07:49,301 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:07:49,302 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:07:49,302 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:07:49,303 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:07:49,303 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:07:49,304 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:07:49,304 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:07:49,304 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:07:49,304 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:07:49,304 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:07:49,304 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:07:49,305 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:07:49,305 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:07:49,305 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:07:49,305 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:07:49,305 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:07:49,306 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:07:49,306 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:07:49,306 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:07:49,306 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:07:49,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:07:49,306 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:07:49,307 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:07:49,307 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:07:49,307 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:07:49,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:07:49,307 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:07:49,308 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:07:49,308 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:07:49,308 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:07:49,308 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8960c443-d151-43bd-b923-1dfe0eb0d5d2/bin/uautomizer-verify-qhAvR1uOyd 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 -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04eb973983c9ccd9d9a2f7bf0254b11977aff2be461e481330083f8f8bce39f7 [2024-11-13 15:07:49,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:07:49,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:07:49,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:07:49,659 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:07:49,659 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:07:49,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8960c443-d151-43bd-b923-1dfe0eb0d5d2/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.3.prop1-back-serstep.c Unable to find full path for "g++" [2024-11-13 15:07:51,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:07:52,042 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:07:52,043 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8960c443-d151-43bd-b923-1dfe0eb0d5d2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.3.prop1-back-serstep.c [2024-11-13 15:07:52,082 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8960c443-d151-43bd-b923-1dfe0eb0d5d2/bin/uautomizer-verify-qhAvR1uOyd/data/321ea6cae/e4917824497c4395bdc9a8ef28c885fc/FLAGf6997c5f5 [2024-11-13 15:07:52,106 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8960c443-d151-43bd-b923-1dfe0eb0d5d2/bin/uautomizer-verify-qhAvR1uOyd/data/321ea6cae/e4917824497c4395bdc9a8ef28c885fc [2024-11-13 15:07:52,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:07:52,113 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:07:52,115 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:07:52,115 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:07:52,120 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:07:52,121 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:07:52" (1/1) ... [2024-11-13 15:07:52,124 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f45b44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:52, skipping insertion in model container [2024-11-13 15:07:52,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:07:52" (1/1) ... [2024-11-13 15:07:52,230 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:07:52,484 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_8960c443-d151-43bd-b923-1dfe0eb0d5d2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.3.prop1-back-serstep.c[1172,1185] [2024-11-13 15:07:53,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:07:53,172 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:07:53,180 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_8960c443-d151-43bd-b923-1dfe0eb0d5d2/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.brp2.3.prop1-back-serstep.c[1172,1185] [2024-11-13 15:07:53,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:07:53,569 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:07:53,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:53 WrapperNode [2024-11-13 15:07:53,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:07:53,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:07:53,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:07:53,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:07:53,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:53" (1/1) ... [2024-11-13 15:07:53,745 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:53" (1/1) ... [2024-11-13 15:07:55,059 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 11624 [2024-11-13 15:07:55,060 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:07:55,061 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:07:55,061 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:07:55,061 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:07:55,070 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:53" (1/1) ... [2024-11-13 15:07:55,071 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:53" (1/1) ... [2024-11-13 15:07:55,403 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:53" (1/1) ... [2024-11-13 15:07:55,819 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 15:07:55,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:53" (1/1) ... [2024-11-13 15:07:55,825 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:53" (1/1) ... [2024-11-13 15:07:56,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:53" (1/1) ... [2024-11-13 15:07:56,418 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:53" (1/1) ... [2024-11-13 15:07:56,481 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:53" (1/1) ... [2024-11-13 15:07:56,529 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:53" (1/1) ... [2024-11-13 15:07:56,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:07:56,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:07:56,707 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:07:56,707 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:07:56,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:53" (1/1) ... [2024-11-13 15:07:56,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:07:56,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8960c443-d151-43bd-b923-1dfe0eb0d5d2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:07:56,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8960c443-d151-43bd-b923-1dfe0eb0d5d2/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:07:56,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8960c443-d151-43bd-b923-1dfe0eb0d5d2/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:07:56,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:07:56,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:07:56,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:07:56,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:07:57,731 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:07:57,734 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:08:20,228 INFO L? ?]: Removed 6190 outVars from TransFormulas that were not future-live. [2024-11-13 15:08:20,228 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:08:20,329 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:08:20,329 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 15:08:20,330 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:08:20 BoogieIcfgContainer [2024-11-13 15:08:20,330 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:08:20,336 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:08:20,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:08:20,410 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:08:20,410 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:07:52" (1/3) ... [2024-11-13 15:08:20,411 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91893bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:08:20, skipping insertion in model container [2024-11-13 15:08:20,411 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:07:53" (2/3) ... [2024-11-13 15:08:20,412 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91893bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:08:20, skipping insertion in model container [2024-11-13 15:08:20,413 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:08:20" (3/3) ... [2024-11-13 15:08:20,414 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.brp2.3.prop1-back-serstep.c [2024-11-13 15:08:20,436 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:08:20,438 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG btor2c-lazyMod.brp2.3.prop1-back-serstep.c that has 1 procedures, 4101 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 15:08:20,571 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:08:20,583 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=PETRI_NET, 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;@789fd80d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:08:20,585 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:08:20,603 INFO L276 IsEmpty]: Start isEmpty. Operand has 4101 states, 4099 states have (on average 1.502317638448402) internal successors, (6158), 4100 states have internal predecessors, (6158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:20,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-11-13 15:08:20,635 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:20,637 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:20,637 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:08:20,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:20,643 INFO L85 PathProgramCache]: Analyzing trace with hash -195886038, now seen corresponding path program 1 times [2024-11-13 15:08:20,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:08:20,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677199181] [2024-11-13 15:08:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:08:21,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:08:23,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:23,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:08:23,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677199181] [2024-11-13 15:08:23,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677199181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:08:23,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:08:23,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:08:23,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011389620] [2024-11-13 15:08:23,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:08:23,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:08:23,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:08:23,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:08:23,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:08:23,384 INFO L87 Difference]: Start difference. First operand has 4101 states, 4099 states have (on average 1.502317638448402) internal successors, (6158), 4100 states have internal predecessors, (6158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:23,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:08:23,755 INFO L93 Difference]: Finished difference Result 8019 states and 12045 transitions. [2024-11-13 15:08:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:08:23,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 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 357 [2024-11-13 15:08:23,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:08:23,799 INFO L225 Difference]: With dead ends: 8019 [2024-11-13 15:08:23,799 INFO L226 Difference]: Without dead ends: 4100 [2024-11-13 15:08:23,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:08:23,819 INFO L432 NwaCegarLoop]: 6152 mSDtfsCounter, 0 mSDsluCounter, 12298 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18450 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:08:23,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18450 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:08:23,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4100 states. [2024-11-13 15:08:24,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4100 to 4100. [2024-11-13 15:08:24,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4100 states, 4099 states have (on average 1.5018297145645279) internal successors, (6156), 4099 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:24,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 6156 transitions. [2024-11-13 15:08:24,043 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 6156 transitions. Word has length 357 [2024-11-13 15:08:24,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:08:24,045 INFO L471 AbstractCegarLoop]: Abstraction has 4100 states and 6156 transitions. [2024-11-13 15:08:24,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 4 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 6156 transitions. [2024-11-13 15:08:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-13 15:08:24,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:24,058 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:24,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:08:24,058 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:08:24,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:24,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1775802441, now seen corresponding path program 1 times [2024-11-13 15:08:24,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:08:24,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59870684] [2024-11-13 15:08:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:24,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:08:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:08:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:25,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:08:25,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59870684] [2024-11-13 15:08:25,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59870684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:08:25,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:08:25,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:08:25,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467303721] [2024-11-13 15:08:25,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:08:25,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:08:25,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:08:25,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:08:25,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:08:25,722 INFO L87 Difference]: Start difference. First operand 4100 states and 6156 transitions. Second operand has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:25,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:08:25,947 INFO L93 Difference]: Finished difference Result 8020 states and 12043 transitions. [2024-11-13 15:08:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:08:25,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 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 358 [2024-11-13 15:08:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:08:25,967 INFO L225 Difference]: With dead ends: 8020 [2024-11-13 15:08:25,967 INFO L226 Difference]: Without dead ends: 4102 [2024-11-13 15:08:25,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:08:25,974 INFO L432 NwaCegarLoop]: 6152 mSDtfsCounter, 0 mSDsluCounter, 12294 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18446 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:08:25,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18446 Invalid, 15 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:08:25,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2024-11-13 15:08:26,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4102. [2024-11-13 15:08:26,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4102 states, 4101 states have (on average 1.501584979273348) internal successors, (6158), 4101 states have internal predecessors, (6158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:26,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4102 states to 4102 states and 6158 transitions. [2024-11-13 15:08:26,086 INFO L78 Accepts]: Start accepts. Automaton has 4102 states and 6158 transitions. Word has length 358 [2024-11-13 15:08:26,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:08:26,088 INFO L471 AbstractCegarLoop]: Abstraction has 4102 states and 6158 transitions. [2024-11-13 15:08:26,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.5) internal successors, (358), 4 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:26,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4102 states and 6158 transitions. [2024-11-13 15:08:26,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-13 15:08:26,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:26,095 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:26,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:08:26,095 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:08:26,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:26,097 INFO L85 PathProgramCache]: Analyzing trace with hash -313264477, now seen corresponding path program 1 times [2024-11-13 15:08:26,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:08:26,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310760032] [2024-11-13 15:08:26,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:26,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:08:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:08:27,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:27,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:08:27,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310760032] [2024-11-13 15:08:27,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310760032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:08:27,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:08:27,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:08:27,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873250895] [2024-11-13 15:08:27,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:08:27,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:08:27,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:08:27,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:08:27,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:08:27,170 INFO L87 Difference]: Start difference. First operand 4102 states and 6158 transitions. Second operand has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:27,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:08:27,363 INFO L93 Difference]: Finished difference Result 8024 states and 12047 transitions. [2024-11-13 15:08:27,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:08:27,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 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 359 [2024-11-13 15:08:27,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:08:27,379 INFO L225 Difference]: With dead ends: 8024 [2024-11-13 15:08:27,379 INFO L226 Difference]: Without dead ends: 4104 [2024-11-13 15:08:27,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:08:27,387 INFO L432 NwaCegarLoop]: 6152 mSDtfsCounter, 0 mSDsluCounter, 12294 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18446 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:08:27,390 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18446 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:08:27,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2024-11-13 15:08:27,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 4104. [2024-11-13 15:08:27,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4104 states, 4103 states have (on average 1.5013404825737264) internal successors, (6160), 4103 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:27,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4104 states to 4104 states and 6160 transitions. [2024-11-13 15:08:27,500 INFO L78 Accepts]: Start accepts. Automaton has 4104 states and 6160 transitions. Word has length 359 [2024-11-13 15:08:27,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:08:27,503 INFO L471 AbstractCegarLoop]: Abstraction has 4104 states and 6160 transitions. [2024-11-13 15:08:27,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.75) internal successors, (359), 4 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:27,504 INFO L276 IsEmpty]: Start isEmpty. Operand 4104 states and 6160 transitions. [2024-11-13 15:08:27,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2024-11-13 15:08:27,512 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:27,513 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:27,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:08:27,516 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:08:27,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:27,516 INFO L85 PathProgramCache]: Analyzing trace with hash -212375106, now seen corresponding path program 1 times [2024-11-13 15:08:27,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:08:27,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49171458] [2024-11-13 15:08:27,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:27,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:08:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:08:28,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:28,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:08:28,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49171458] [2024-11-13 15:08:28,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49171458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:08:28,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:08:28,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:08:28,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026114905] [2024-11-13 15:08:28,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:08:28,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:08:28,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:08:28,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:08:28,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:08:28,825 INFO L87 Difference]: Start difference. First operand 4104 states and 6160 transitions. Second operand has 6 states, 6 states have (on average 60.0) internal successors, (360), 6 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:29,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:08:29,180 INFO L93 Difference]: Finished difference Result 11918 states and 17893 transitions. [2024-11-13 15:08:29,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:08:29,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 60.0) internal successors, (360), 6 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 360 [2024-11-13 15:08:29,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:08:29,210 INFO L225 Difference]: With dead ends: 11918 [2024-11-13 15:08:29,210 INFO L226 Difference]: Without dead ends: 7996 [2024-11-13 15:08:29,215 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:08:29,216 INFO L432 NwaCegarLoop]: 6150 mSDtfsCounter, 5762 mSDsluCounter, 18173 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5762 SdHoareTripleChecker+Valid, 24323 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:08:29,217 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5762 Valid, 24323 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:08:29,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2024-11-13 15:08:29,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 4620. [2024-11-13 15:08:29,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4620 states, 4619 states have (on average 1.501190733925092) internal successors, (6934), 4619 states have internal predecessors, (6934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:29,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4620 states to 4620 states and 6934 transitions. [2024-11-13 15:08:29,359 INFO L78 Accepts]: Start accepts. Automaton has 4620 states and 6934 transitions. Word has length 360 [2024-11-13 15:08:29,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:08:29,360 INFO L471 AbstractCegarLoop]: Abstraction has 4620 states and 6934 transitions. [2024-11-13 15:08:29,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.0) internal successors, (360), 6 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:29,361 INFO L276 IsEmpty]: Start isEmpty. Operand 4620 states and 6934 transitions. [2024-11-13 15:08:29,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2246 [2024-11-13 15:08:29,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:29,470 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:29,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:08:29,471 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:08:29,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:29,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1293339983, now seen corresponding path program 1 times [2024-11-13 15:08:29,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:08:29,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347503627] [2024-11-13 15:08:29,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:29,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:08:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:08:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:39,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:08:39,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347503627] [2024-11-13 15:08:39,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347503627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:08:39,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:08:39,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:08:39,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303616496] [2024-11-13 15:08:39,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:08:39,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:08:39,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:08:39,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:08:39,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:08:39,921 INFO L87 Difference]: Start difference. First operand 4620 states and 6934 transitions. Second operand has 3 states, 3 states have (on average 748.3333333333334) internal successors, (2245), 3 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:40,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:08:40,296 INFO L93 Difference]: Finished difference Result 8543 states and 12824 transitions. [2024-11-13 15:08:40,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:08:40,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 748.3333333333334) internal successors, (2245), 3 states have internal predecessors, (2245), 0 states have call successors, (0), 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 2245 [2024-11-13 15:08:40,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:08:40,332 INFO L225 Difference]: With dead ends: 8543 [2024-11-13 15:08:40,335 INFO L226 Difference]: Without dead ends: 4621 [2024-11-13 15:08:40,341 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 [2024-11-13 15:08:40,342 INFO L432 NwaCegarLoop]: 6153 mSDtfsCounter, 0 mSDsluCounter, 6147 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12300 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:08:40,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12300 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:08:40,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4621 states. [2024-11-13 15:08:40,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4621 to 4621. [2024-11-13 15:08:40,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4621 states, 4620 states have (on average 1.501082251082251) internal successors, (6935), 4620 states have internal predecessors, (6935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4621 states to 4621 states and 6935 transitions. [2024-11-13 15:08:40,520 INFO L78 Accepts]: Start accepts. Automaton has 4621 states and 6935 transitions. Word has length 2245 [2024-11-13 15:08:40,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:08:40,522 INFO L471 AbstractCegarLoop]: Abstraction has 4621 states and 6935 transitions. [2024-11-13 15:08:40,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 748.3333333333334) internal successors, (2245), 3 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:40,526 INFO L276 IsEmpty]: Start isEmpty. Operand 4621 states and 6935 transitions. [2024-11-13 15:08:40,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2246 [2024-11-13 15:08:40,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:40,667 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:40,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:08:40,668 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:08:40,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:40,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2107598816, now seen corresponding path program 1 times [2024-11-13 15:08:40,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:08:40,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982902518] [2024-11-13 15:08:40,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:40,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:08:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:08:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:47,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:08:47,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982902518] [2024-11-13 15:08:47,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982902518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:08:47,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:08:47,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:08:47,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129763487] [2024-11-13 15:08:47,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:08:47,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:08:47,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:08:47,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:08:47,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:08:47,745 INFO L87 Difference]: Start difference. First operand 4621 states and 6935 transitions. Second operand has 3 states, 3 states have (on average 748.3333333333334) internal successors, (2245), 3 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:47,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:08:47,899 INFO L93 Difference]: Finished difference Result 8545 states and 12826 transitions. [2024-11-13 15:08:47,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:08:47,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 748.3333333333334) internal successors, (2245), 3 states have internal predecessors, (2245), 0 states have call successors, (0), 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 2245 [2024-11-13 15:08:47,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:08:47,921 INFO L225 Difference]: With dead ends: 8545 [2024-11-13 15:08:47,921 INFO L226 Difference]: Without dead ends: 4622 [2024-11-13 15:08:47,928 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 [2024-11-13 15:08:47,929 INFO L432 NwaCegarLoop]: 6153 mSDtfsCounter, 0 mSDsluCounter, 6147 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12300 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:08:47,931 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12300 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:08:47,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2024-11-13 15:08:48,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4622. [2024-11-13 15:08:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4622 states, 4621 states have (on average 1.500973815191517) internal successors, (6936), 4621 states have internal predecessors, (6936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4622 states to 4622 states and 6936 transitions. [2024-11-13 15:08:48,067 INFO L78 Accepts]: Start accepts. Automaton has 4622 states and 6936 transitions. Word has length 2245 [2024-11-13 15:08:48,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:08:48,070 INFO L471 AbstractCegarLoop]: Abstraction has 4622 states and 6936 transitions. [2024-11-13 15:08:48,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 748.3333333333334) internal successors, (2245), 3 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:48,073 INFO L276 IsEmpty]: Start isEmpty. Operand 4622 states and 6936 transitions. [2024-11-13 15:08:48,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2246 [2024-11-13 15:08:48,156 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:48,157 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:48,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:08:48,158 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:08:48,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:48,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1561013263, now seen corresponding path program 1 times [2024-11-13 15:08:48,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:08:48,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771405091] [2024-11-13 15:08:48,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:48,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:08:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:08:53,761 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:08:53,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:08:53,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771405091] [2024-11-13 15:08:53,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771405091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:08:53,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:08:53,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:08:53,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54682970] [2024-11-13 15:08:53,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:08:53,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:08:53,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:08:53,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:08:53,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:08:53,769 INFO L87 Difference]: Start difference. First operand 4622 states and 6936 transitions. Second operand has 3 states, 3 states have (on average 748.3333333333334) internal successors, (2245), 3 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:53,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:08:53,868 INFO L93 Difference]: Finished difference Result 8547 states and 12828 transitions. [2024-11-13 15:08:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:08:53,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 748.3333333333334) internal successors, (2245), 3 states have internal predecessors, (2245), 0 states have call successors, (0), 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 2245 [2024-11-13 15:08:53,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:08:53,882 INFO L225 Difference]: With dead ends: 8547 [2024-11-13 15:08:53,883 INFO L226 Difference]: Without dead ends: 4623 [2024-11-13 15:08:53,887 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 [2024-11-13 15:08:53,888 INFO L432 NwaCegarLoop]: 6153 mSDtfsCounter, 0 mSDsluCounter, 6147 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12300 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:08:53,888 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 12300 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:08:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4623 states. [2024-11-13 15:08:53,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4623 to 4623. [2024-11-13 15:08:53,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4623 states, 4622 states have (on average 1.5008654262224146) internal successors, (6937), 4622 states have internal predecessors, (6937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:53,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4623 states to 4623 states and 6937 transitions. [2024-11-13 15:08:53,991 INFO L78 Accepts]: Start accepts. Automaton has 4623 states and 6937 transitions. Word has length 2245 [2024-11-13 15:08:53,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:08:53,993 INFO L471 AbstractCegarLoop]: Abstraction has 4623 states and 6937 transitions. [2024-11-13 15:08:53,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 748.3333333333334) internal successors, (2245), 3 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:08:53,994 INFO L276 IsEmpty]: Start isEmpty. Operand 4623 states and 6937 transitions. [2024-11-13 15:08:54,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2246 [2024-11-13 15:08:54,034 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:08:54,036 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:08:54,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:08:54,036 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:08:54,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:08:54,037 INFO L85 PathProgramCache]: Analyzing trace with hash -2008884546, now seen corresponding path program 1 times [2024-11-13 15:08:54,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:08:54,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152343609] [2024-11-13 15:08:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:08:54,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:08:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2024-11-13 15:09:03,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:03,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152343609] [2024-11-13 15:09:03,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152343609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:09:03,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:09:03,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:09:03,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249941450] [2024-11-13 15:09:03,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:09:03,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:09:03,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:03,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:09:03,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:09:03,451 INFO L87 Difference]: Start difference. First operand 4623 states and 6937 transitions. Second operand has 4 states, 4 states have (on average 497.5) internal successors, (1990), 4 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:03,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:03,652 INFO L93 Difference]: Finished difference Result 8554 states and 12837 transitions. [2024-11-13 15:09:03,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:09:03,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 497.5) internal successors, (1990), 4 states have internal predecessors, (1990), 0 states have call successors, (0), 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 2245 [2024-11-13 15:09:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:09:03,681 INFO L225 Difference]: With dead ends: 8554 [2024-11-13 15:09:03,681 INFO L226 Difference]: Without dead ends: 4627 [2024-11-13 15:09:03,690 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:09:03,694 INFO L432 NwaCegarLoop]: 6152 mSDtfsCounter, 0 mSDsluCounter, 12294 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18446 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:09:03,695 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18446 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:09:03,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2024-11-13 15:09:03,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4625. [2024-11-13 15:09:03,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4625 states, 4624 states have (on average 1.5006487889273357) internal successors, (6939), 4624 states have internal predecessors, (6939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:03,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4625 states to 4625 states and 6939 transitions. [2024-11-13 15:09:03,822 INFO L78 Accepts]: Start accepts. Automaton has 4625 states and 6939 transitions. Word has length 2245 [2024-11-13 15:09:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:09:03,825 INFO L471 AbstractCegarLoop]: Abstraction has 4625 states and 6939 transitions. [2024-11-13 15:09:03,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 497.5) internal successors, (1990), 4 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 4625 states and 6939 transitions. [2024-11-13 15:09:03,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2247 [2024-11-13 15:09:03,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:09:03,991 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:03,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:09:03,992 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:09:03,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:03,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1031683300, now seen corresponding path program 1 times [2024-11-13 15:09:03,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:03,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755605902] [2024-11-13 15:09:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:03,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2024-11-13 15:09:10,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:10,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755605902] [2024-11-13 15:09:10,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755605902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:09:10,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:09:10,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:09:10,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938329996] [2024-11-13 15:09:10,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:09:10,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:09:10,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:10,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:09:10,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:09:10,849 INFO L87 Difference]: Start difference. First operand 4625 states and 6939 transitions. Second operand has 5 states, 5 states have (on average 398.6) internal successors, (1993), 5 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:11,001 INFO L93 Difference]: Finished difference Result 8562 states and 12847 transitions. [2024-11-13 15:09:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:09:11,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 398.6) internal successors, (1993), 5 states have internal predecessors, (1993), 0 states have call successors, (0), 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 2246 [2024-11-13 15:09:11,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:09:11,017 INFO L225 Difference]: With dead ends: 8562 [2024-11-13 15:09:11,017 INFO L226 Difference]: Without dead ends: 4629 [2024-11-13 15:09:11,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:09:11,023 INFO L432 NwaCegarLoop]: 6152 mSDtfsCounter, 0 mSDsluCounter, 12294 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18446 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:09:11,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18446 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:09:11,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2024-11-13 15:09:11,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 4627. [2024-11-13 15:09:11,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4626 states have (on average 1.5004323389537397) internal successors, (6941), 4626 states have internal predecessors, (6941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:11,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 6941 transitions. [2024-11-13 15:09:11,123 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 6941 transitions. Word has length 2246 [2024-11-13 15:09:11,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:09:11,128 INFO L471 AbstractCegarLoop]: Abstraction has 4627 states and 6941 transitions. [2024-11-13 15:09:11,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 398.6) internal successors, (1993), 5 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:11,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 6941 transitions. [2024-11-13 15:09:11,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2248 [2024-11-13 15:09:11,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:09:11,202 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:11,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:09:11,202 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:09:11,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:11,205 INFO L85 PathProgramCache]: Analyzing trace with hash -553891387, now seen corresponding path program 1 times [2024-11-13 15:09:11,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:11,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156258466] [2024-11-13 15:09:11,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:11,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2024-11-13 15:09:16,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:16,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156258466] [2024-11-13 15:09:16,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156258466] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:09:16,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:09:16,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:09:16,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215003537] [2024-11-13 15:09:16,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:09:16,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:09:16,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:16,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:09:16,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:09:16,819 INFO L87 Difference]: Start difference. First operand 4627 states and 6941 transitions. Second operand has 5 states, 5 states have (on average 399.2) internal successors, (1996), 5 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:16,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:16,934 INFO L93 Difference]: Finished difference Result 8570 states and 12857 transitions. [2024-11-13 15:09:16,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:09:16,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 399.2) internal successors, (1996), 5 states have internal predecessors, (1996), 0 states have call successors, (0), 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 2247 [2024-11-13 15:09:16,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:09:16,950 INFO L225 Difference]: With dead ends: 8570 [2024-11-13 15:09:16,950 INFO L226 Difference]: Without dead ends: 4631 [2024-11-13 15:09:16,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:09:16,955 INFO L432 NwaCegarLoop]: 6152 mSDtfsCounter, 0 mSDsluCounter, 12294 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18446 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:09:16,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18446 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:09:16,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4631 states. [2024-11-13 15:09:17,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4631 to 4629. [2024-11-13 15:09:17,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4628 states have (on average 1.5002160760587726) internal successors, (6943), 4628 states have internal predecessors, (6943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:17,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 6943 transitions. [2024-11-13 15:09:17,026 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 6943 transitions. Word has length 2247 [2024-11-13 15:09:17,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:09:17,030 INFO L471 AbstractCegarLoop]: Abstraction has 4629 states and 6943 transitions. [2024-11-13 15:09:17,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 399.2) internal successors, (1996), 5 states have internal predecessors, (1996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:17,030 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 6943 transitions. [2024-11-13 15:09:17,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2249 [2024-11-13 15:09:17,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:09:17,069 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:17,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:09:17,070 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:09:17,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:17,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1298687083, now seen corresponding path program 1 times [2024-11-13 15:09:17,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:17,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913308329] [2024-11-13 15:09:17,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:17,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:23,461 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-13 15:09:23,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:23,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913308329] [2024-11-13 15:09:23,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913308329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:09:23,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:09:23,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:09:23,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645110233] [2024-11-13 15:09:23,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:09:23,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:09:23,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:23,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:09:23,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:09:23,469 INFO L87 Difference]: Start difference. First operand 4629 states and 6943 transitions. Second operand has 5 states, 5 states have (on average 399.8) internal successors, (1999), 5 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:23,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:23,649 INFO L93 Difference]: Finished difference Result 8578 states and 12867 transitions. [2024-11-13 15:09:23,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:09:23,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 399.8) internal successors, (1999), 5 states have internal predecessors, (1999), 0 states have call successors, (0), 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 2248 [2024-11-13 15:09:23,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:09:23,665 INFO L225 Difference]: With dead ends: 8578 [2024-11-13 15:09:23,665 INFO L226 Difference]: Without dead ends: 4633 [2024-11-13 15:09:23,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:09:23,670 INFO L432 NwaCegarLoop]: 6152 mSDtfsCounter, 0 mSDsluCounter, 18440 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24592 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:09:23,670 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24592 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:09:23,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4633 states. [2024-11-13 15:09:23,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4633 to 4631. [2024-11-13 15:09:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4631 states, 4630 states have (on average 1.5) internal successors, (6945), 4630 states have internal predecessors, (6945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:23,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4631 states to 4631 states and 6945 transitions. [2024-11-13 15:09:23,759 INFO L78 Accepts]: Start accepts. Automaton has 4631 states and 6945 transitions. Word has length 2248 [2024-11-13 15:09:23,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:09:23,761 INFO L471 AbstractCegarLoop]: Abstraction has 4631 states and 6945 transitions. [2024-11-13 15:09:23,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 399.8) internal successors, (1999), 5 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:23,762 INFO L276 IsEmpty]: Start isEmpty. Operand 4631 states and 6945 transitions. [2024-11-13 15:09:23,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2250 [2024-11-13 15:09:23,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:09:23,844 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:23,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 15:09:23,845 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:09:23,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:23,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2130242100, now seen corresponding path program 1 times [2024-11-13 15:09:23,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:23,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726174425] [2024-11-13 15:09:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:23,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:33,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:33,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726174425] [2024-11-13 15:09:33,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726174425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:09:33,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:09:33,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:09:33,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29862739] [2024-11-13 15:09:33,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:09:33,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:09:33,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:33,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:09:33,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:09:33,427 INFO L87 Difference]: Start difference. First operand 4631 states and 6945 transitions. Second operand has 5 states, 5 states have (on average 449.8) internal successors, (2249), 5 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:34,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:34,873 INFO L93 Difference]: Finished difference Result 8547 states and 12829 transitions. [2024-11-13 15:09:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:09:34,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 449.8) internal successors, (2249), 5 states have internal predecessors, (2249), 0 states have call successors, (0), 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 2249 [2024-11-13 15:09:34,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:09:34,886 INFO L225 Difference]: With dead ends: 8547 [2024-11-13 15:09:34,886 INFO L226 Difference]: Without dead ends: 4614 [2024-11-13 15:09:34,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:09:34,891 INFO L432 NwaCegarLoop]: 5713 mSDtfsCounter, 5695 mSDsluCounter, 11420 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5695 SdHoareTripleChecker+Valid, 17133 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:09:34,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5695 Valid, 17133 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 15:09:34,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4614 states. [2024-11-13 15:09:34,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4614 to 4612. [2024-11-13 15:09:34,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4612 states, 4611 states have (on average 1.4975059639991326) internal successors, (6905), 4611 states have internal predecessors, (6905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4612 states to 4612 states and 6905 transitions. [2024-11-13 15:09:34,977 INFO L78 Accepts]: Start accepts. Automaton has 4612 states and 6905 transitions. Word has length 2249 [2024-11-13 15:09:34,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:09:34,978 INFO L471 AbstractCegarLoop]: Abstraction has 4612 states and 6905 transitions. [2024-11-13 15:09:34,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 449.8) internal successors, (2249), 5 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:34,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4612 states and 6905 transitions. [2024-11-13 15:09:35,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2251 [2024-11-13 15:09:35,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:09:35,060 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:35,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 15:09:35,060 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:09:35,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:35,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1938296889, now seen corresponding path program 1 times [2024-11-13 15:09:35,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:35,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355765380] [2024-11-13 15:09:35,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:35,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:42,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:42,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355765380] [2024-11-13 15:09:42,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355765380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:09:42,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:09:42,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:09:42,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126157697] [2024-11-13 15:09:42,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:09:42,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:09:42,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:42,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:09:42,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:09:42,645 INFO L87 Difference]: Start difference. First operand 4612 states and 6905 transitions. Second operand has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:43,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:43,512 INFO L93 Difference]: Finished difference Result 8636 states and 12929 transitions. [2024-11-13 15:09:43,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:09:43,513 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 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 2250 [2024-11-13 15:09:43,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:09:43,522 INFO L225 Difference]: With dead ends: 8636 [2024-11-13 15:09:43,522 INFO L226 Difference]: Without dead ends: 4616 [2024-11-13 15:09:43,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:09:43,527 INFO L432 NwaCegarLoop]: 6077 mSDtfsCounter, 5995 mSDsluCounter, 17861 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5995 SdHoareTripleChecker+Valid, 23938 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:09:43,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5995 Valid, 23938 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:09:43,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2024-11-13 15:09:43,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 4614. [2024-11-13 15:09:43,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4614 states, 4613 states have (on average 1.4972902666377628) internal successors, (6907), 4613 states have internal predecessors, (6907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4614 states to 4614 states and 6907 transitions. [2024-11-13 15:09:43,590 INFO L78 Accepts]: Start accepts. Automaton has 4614 states and 6907 transitions. Word has length 2250 [2024-11-13 15:09:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:09:43,590 INFO L471 AbstractCegarLoop]: Abstraction has 4614 states and 6907 transitions. [2024-11-13 15:09:43,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:43,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4614 states and 6907 transitions. [2024-11-13 15:09:43,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2252 [2024-11-13 15:09:43,627 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:09:43,628 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:43,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 15:09:43,629 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:09:43,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash -982707431, now seen corresponding path program 1 times [2024-11-13 15:09:43,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:43,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17247133] [2024-11-13 15:09:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:43,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:50,153 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:50,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:50,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17247133] [2024-11-13 15:09:50,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17247133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:09:50,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:09:50,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:09:50,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332274535] [2024-11-13 15:09:50,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:09:50,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:09:50,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:50,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:09:50,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:09:50,159 INFO L87 Difference]: Start difference. First operand 4614 states and 6907 transitions. Second operand has 6 states, 6 states have (on average 375.1666666666667) internal successors, (2251), 6 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:51,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:51,261 INFO L93 Difference]: Finished difference Result 8534 states and 12774 transitions. [2024-11-13 15:09:51,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:09:51,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 375.1666666666667) internal successors, (2251), 6 states have internal predecessors, (2251), 0 states have call successors, (0), 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 2251 [2024-11-13 15:09:51,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:09:51,272 INFO L225 Difference]: With dead ends: 8534 [2024-11-13 15:09:51,272 INFO L226 Difference]: Without dead ends: 4618 [2024-11-13 15:09:51,276 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:09:51,276 INFO L432 NwaCegarLoop]: 5713 mSDtfsCounter, 6085 mSDsluCounter, 11424 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6085 SdHoareTripleChecker+Valid, 17137 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:09:51,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6085 Valid, 17137 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 15:09:51,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4618 states. [2024-11-13 15:09:51,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4618 to 4616. [2024-11-13 15:09:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 4615 states have (on average 1.4970747562296858) internal successors, (6909), 4615 states have internal predecessors, (6909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 6909 transitions. [2024-11-13 15:09:51,337 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 6909 transitions. Word has length 2251 [2024-11-13 15:09:51,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:09:51,338 INFO L471 AbstractCegarLoop]: Abstraction has 4616 states and 6909 transitions. [2024-11-13 15:09:51,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 375.1666666666667) internal successors, (2251), 6 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:51,339 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 6909 transitions. [2024-11-13 15:09:51,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2253 [2024-11-13 15:09:51,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:09:51,376 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:51,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 15:09:51,377 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:09:51,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:51,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2085723396, now seen corresponding path program 1 times [2024-11-13 15:09:51,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:51,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022695923] [2024-11-13 15:09:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:51,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:09:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:09:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:09:57,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:09:57,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022695923] [2024-11-13 15:09:57,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022695923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:09:57,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:09:57,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:09:57,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528985380] [2024-11-13 15:09:57,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:09:57,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:09:57,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:09:57,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:09:57,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:09:57,222 INFO L87 Difference]: Start difference. First operand 4616 states and 6909 transitions. Second operand has 6 states, 6 states have (on average 375.3333333333333) internal successors, (2252), 6 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:58,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:09:58,211 INFO L93 Difference]: Finished difference Result 8538 states and 12778 transitions. [2024-11-13 15:09:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:09:58,212 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 375.3333333333333) internal successors, (2252), 6 states have internal predecessors, (2252), 0 states have call successors, (0), 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 2252 [2024-11-13 15:09:58,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:09:58,219 INFO L225 Difference]: With dead ends: 8538 [2024-11-13 15:09:58,219 INFO L226 Difference]: Without dead ends: 4620 [2024-11-13 15:09:58,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:09:58,224 INFO L432 NwaCegarLoop]: 5713 mSDtfsCounter, 11643 mSDsluCounter, 11424 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11643 SdHoareTripleChecker+Valid, 17137 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:09:58,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11643 Valid, 17137 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 15:09:58,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4620 states. [2024-11-13 15:09:58,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4620 to 4618. [2024-11-13 15:09:58,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4618 states, 4617 states have (on average 1.496859432531947) internal successors, (6911), 4617 states have internal predecessors, (6911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4618 states to 4618 states and 6911 transitions. [2024-11-13 15:09:58,282 INFO L78 Accepts]: Start accepts. Automaton has 4618 states and 6911 transitions. Word has length 2252 [2024-11-13 15:09:58,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:09:58,283 INFO L471 AbstractCegarLoop]: Abstraction has 4618 states and 6911 transitions. [2024-11-13 15:09:58,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 375.3333333333333) internal successors, (2252), 6 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:09:58,284 INFO L276 IsEmpty]: Start isEmpty. Operand 4618 states and 6911 transitions. [2024-11-13 15:09:58,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2254 [2024-11-13 15:09:58,319 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:09:58,320 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:09:58,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 15:09:58,320 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:09:58,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:09:58,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1456704946, now seen corresponding path program 1 times [2024-11-13 15:09:58,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:09:58,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639963075] [2024-11-13 15:09:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:09:58,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:10:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:10:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:10:04,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:10:04,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639963075] [2024-11-13 15:10:04,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639963075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:10:04,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:10:04,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:10:04,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064800207] [2024-11-13 15:10:04,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:10:04,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:10:04,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:10:04,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:10:04,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:10:04,755 INFO L87 Difference]: Start difference. First operand 4618 states and 6911 transitions. Second operand has 6 states, 6 states have (on average 375.5) internal successors, (2253), 6 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:05,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:10:05,742 INFO L93 Difference]: Finished difference Result 8542 states and 12782 transitions. [2024-11-13 15:10:05,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:10:05,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 375.5) internal successors, (2253), 6 states have internal predecessors, (2253), 0 states have call successors, (0), 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 2253 [2024-11-13 15:10:05,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:10:05,748 INFO L225 Difference]: With dead ends: 8542 [2024-11-13 15:10:05,749 INFO L226 Difference]: Without dead ends: 4622 [2024-11-13 15:10:05,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:10:05,753 INFO L432 NwaCegarLoop]: 5713 mSDtfsCounter, 11597 mSDsluCounter, 11423 mSDsCounter, 0 mSdLazyCounter, 1199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11597 SdHoareTripleChecker+Valid, 17136 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:10:05,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11597 Valid, 17136 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1199 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 15:10:05,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4622 states. [2024-11-13 15:10:05,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4622 to 4620. [2024-11-13 15:10:05,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4620 states, 4619 states have (on average 1.4966442953020134) internal successors, (6913), 4619 states have internal predecessors, (6913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:05,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4620 states to 4620 states and 6913 transitions. [2024-11-13 15:10:05,811 INFO L78 Accepts]: Start accepts. Automaton has 4620 states and 6913 transitions. Word has length 2253 [2024-11-13 15:10:05,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:10:05,812 INFO L471 AbstractCegarLoop]: Abstraction has 4620 states and 6913 transitions. [2024-11-13 15:10:05,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 375.5) internal successors, (2253), 6 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:05,813 INFO L276 IsEmpty]: Start isEmpty. Operand 4620 states and 6913 transitions. [2024-11-13 15:10:05,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2255 [2024-11-13 15:10:05,848 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:10:05,849 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:10:05,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 15:10:05,850 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:10:05,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:10:05,851 INFO L85 PathProgramCache]: Analyzing trace with hash 361712060, now seen corresponding path program 1 times [2024-11-13 15:10:05,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:10:05,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815503849] [2024-11-13 15:10:05,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:10:05,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:10:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:10:11,500 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-13 15:10:11,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:10:11,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815503849] [2024-11-13 15:10:11,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815503849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:10:11,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:10:11,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:10:11,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473486516] [2024-11-13 15:10:11,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:10:11,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:10:11,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:10:11,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:10:11,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:10:11,504 INFO L87 Difference]: Start difference. First operand 4620 states and 6913 transitions. Second operand has 4 states, 4 states have (on average 501.75) internal successors, (2007), 4 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:11,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:10:11,570 INFO L93 Difference]: Finished difference Result 8564 states and 12813 transitions. [2024-11-13 15:10:11,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:10:11,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 501.75) internal successors, (2007), 4 states have internal predecessors, (2007), 0 states have call successors, (0), 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 2254 [2024-11-13 15:10:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:10:11,575 INFO L225 Difference]: With dead ends: 8564 [2024-11-13 15:10:11,575 INFO L226 Difference]: Without dead ends: 4624 [2024-11-13 15:10:11,578 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:10:11,578 INFO L432 NwaCegarLoop]: 6110 mSDtfsCounter, 0 mSDsluCounter, 12210 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18320 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:10:11,578 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18320 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:10:11,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4624 states. [2024-11-13 15:10:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4624 to 4622. [2024-11-13 15:10:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4622 states, 4621 states have (on average 1.496429344297771) internal successors, (6915), 4621 states have internal predecessors, (6915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:11,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4622 states to 4622 states and 6915 transitions. [2024-11-13 15:10:11,637 INFO L78 Accepts]: Start accepts. Automaton has 4622 states and 6915 transitions. Word has length 2254 [2024-11-13 15:10:11,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:10:11,639 INFO L471 AbstractCegarLoop]: Abstraction has 4622 states and 6915 transitions. [2024-11-13 15:10:11,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 501.75) internal successors, (2007), 4 states have internal predecessors, (2007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:11,640 INFO L276 IsEmpty]: Start isEmpty. Operand 4622 states and 6915 transitions. [2024-11-13 15:10:11,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2256 [2024-11-13 15:10:11,675 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:10:11,677 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:10:11,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 15:10:11,677 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:10:11,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:10:11,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1933145826, now seen corresponding path program 1 times [2024-11-13 15:10:11,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:10:11,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369028578] [2024-11-13 15:10:11,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:10:11,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:10:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:10:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2024-11-13 15:10:16,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:10:16,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369028578] [2024-11-13 15:10:16,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369028578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:10:16,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:10:16,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:10:16,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206661162] [2024-11-13 15:10:16,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:10:16,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:10:16,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:10:16,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:10:16,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:10:16,708 INFO L87 Difference]: Start difference. First operand 4622 states and 6915 transitions. Second operand has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:16,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:10:16,775 INFO L93 Difference]: Finished difference Result 8572 states and 12823 transitions. [2024-11-13 15:10:16,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:10:16,776 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 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 2255 [2024-11-13 15:10:16,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:10:16,781 INFO L225 Difference]: With dead ends: 8572 [2024-11-13 15:10:16,781 INFO L226 Difference]: Without dead ends: 4626 [2024-11-13 15:10:16,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:10:16,784 INFO L432 NwaCegarLoop]: 6110 mSDtfsCounter, 0 mSDsluCounter, 12210 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18320 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:10:16,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18320 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:10:16,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2024-11-13 15:10:16,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 4624. [2024-11-13 15:10:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4624 states, 4623 states have (on average 1.4962145792775254) internal successors, (6917), 4623 states have internal predecessors, (6917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:16,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4624 states to 4624 states and 6917 transitions. [2024-11-13 15:10:16,842 INFO L78 Accepts]: Start accepts. Automaton has 4624 states and 6917 transitions. Word has length 2255 [2024-11-13 15:10:16,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:10:16,844 INFO L471 AbstractCegarLoop]: Abstraction has 4624 states and 6917 transitions. [2024-11-13 15:10:16,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 402.0) internal successors, (2010), 5 states have internal predecessors, (2010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 4624 states and 6917 transitions. [2024-11-13 15:10:16,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2257 [2024-11-13 15:10:16,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:10:16,881 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:10:16,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 15:10:16,881 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:10:16,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:10:16,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1932388035, now seen corresponding path program 1 times [2024-11-13 15:10:16,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:10:16,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131198559] [2024-11-13 15:10:16,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:10:16,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:10:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:10:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-13 15:10:22,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:10:22,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131198559] [2024-11-13 15:10:22,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131198559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:10:22,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:10:22,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:10:22,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159289533] [2024-11-13 15:10:22,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:10:22,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:10:22,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:10:22,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:10:22,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:10:22,267 INFO L87 Difference]: Start difference. First operand 4624 states and 6917 transitions. Second operand has 4 states, 4 states have (on average 503.25) internal successors, (2013), 4 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:22,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:10:22,329 INFO L93 Difference]: Finished difference Result 8580 states and 12833 transitions. [2024-11-13 15:10:22,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:10:22,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 503.25) internal successors, (2013), 4 states have internal predecessors, (2013), 0 states have call successors, (0), 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 2256 [2024-11-13 15:10:22,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:10:22,335 INFO L225 Difference]: With dead ends: 8580 [2024-11-13 15:10:22,335 INFO L226 Difference]: Without dead ends: 4628 [2024-11-13 15:10:22,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:10:22,338 INFO L432 NwaCegarLoop]: 6110 mSDtfsCounter, 0 mSDsluCounter, 12210 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18320 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:10:22,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18320 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:10:22,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2024-11-13 15:10:22,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4626. [2024-11-13 15:10:22,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4625 states have (on average 1.496) internal successors, (6919), 4625 states have internal predecessors, (6919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:22,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 6919 transitions. [2024-11-13 15:10:22,391 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 6919 transitions. Word has length 2256 [2024-11-13 15:10:22,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:10:22,393 INFO L471 AbstractCegarLoop]: Abstraction has 4626 states and 6919 transitions. [2024-11-13 15:10:22,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 503.25) internal successors, (2013), 4 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:10:22,394 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 6919 transitions. [2024-11-13 15:10:22,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2258 [2024-11-13 15:10:22,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:10:22,417 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:10:22,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 15:10:22,417 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:10:22,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:10:22,418 INFO L85 PathProgramCache]: Analyzing trace with hash 798491543, now seen corresponding path program 1 times [2024-11-13 15:10:22,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:10:22,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5567393] [2024-11-13 15:10:22,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:10:22,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:10:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat