./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6751133-1e72-4c15-ba74-0dba238538db/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6751133-1e72-4c15-ba74-0dba238538db/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_e6751133-1e72-4c15-ba74-0dba238538db/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6751133-1e72-4c15-ba74-0dba238538db/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6751133-1e72-4c15-ba74-0dba238538db/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6751133-1e72-4c15-ba74-0dba238538db/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 32bit --witnessprinter.graph.data.programhash bff75d9656e36398f3860eeb63dc9d2c0a8396d28a082e4ac99a64913f1f2573 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 12:48:01,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 12:48:01,945 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6751133-1e72-4c15-ba74-0dba238538db/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 12:48:01,950 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 12:48:01,950 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 12:48:01,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 12:48:01,976 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 12:48:01,977 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 12:48:01,977 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 12:48:01,978 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 12:48:01,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 12:48:01,979 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 12:48:01,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 12:48:01,980 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 12:48:01,980 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 12:48:01,980 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 12:48:01,981 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 12:48:01,981 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 12:48:01,981 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 12:48:01,981 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 12:48:01,981 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 12:48:01,981 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 12:48:01,981 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 12:48:01,982 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 12:48:01,982 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 12:48:01,982 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 12:48:01,982 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 12:48:01,982 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 12:48:01,982 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 12:48:01,982 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 12:48:01,983 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 12:48:01,983 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 12:48:01,983 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:48:01,983 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 12:48:01,983 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 12:48:01,983 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 12:48:01,984 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 12:48:01,984 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 12:48:01,984 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 12:48:01,984 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 12:48:01,984 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 12:48:01,984 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 12:48:01,984 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_e6751133-1e72-4c15-ba74-0dba238538db/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bff75d9656e36398f3860eeb63dc9d2c0a8396d28a082e4ac99a64913f1f2573 [2024-11-13 12:48:02,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:48:02,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:48:02,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:48:02,278 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:48:02,278 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:48:02,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6751133-1e72-4c15-ba74-0dba238538db/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c Unable to find full path for "g++" [2024-11-13 12:48:04,153 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:48:04,588 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:48:04,592 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6751133-1e72-4c15-ba74-0dba238538db/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2024-11-13 12:48:04,626 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6751133-1e72-4c15-ba74-0dba238538db/bin/uautomizer-verify-qhAvR1uOyd/data/b028bf741/d6712e5118a844f9b503563f4daf12d6/FLAGf27ba3eed [2024-11-13 12:48:04,645 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6751133-1e72-4c15-ba74-0dba238538db/bin/uautomizer-verify-qhAvR1uOyd/data/b028bf741/d6712e5118a844f9b503563f4daf12d6 [2024-11-13 12:48:04,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:48:04,649 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:48:04,650 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:48:04,651 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:48:04,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:48:04,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:48:04" (1/1) ... [2024-11-13 12:48:04,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8a4ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:04, skipping insertion in model container [2024-11-13 12:48:04,659 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:48:04" (1/1) ... [2024-11-13 12:48:04,733 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:48:05,246 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_e6751133-1e72-4c15-ba74-0dba238538db/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c[65679,65692] [2024-11-13 12:48:05,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:48:05,262 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:48:05,435 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_e6751133-1e72-4c15-ba74-0dba238538db/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c[65679,65692] [2024-11-13 12:48:05,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:48:05,461 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:48:05,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:05 WrapperNode [2024-11-13 12:48:05,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:48:05,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:48:05,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:48:05,464 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:48:05,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:05" (1/1) ... [2024-11-13 12:48:05,504 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:05" (1/1) ... [2024-11-13 12:48:05,598 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2141 [2024-11-13 12:48:05,598 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:48:05,599 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:48:05,600 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:48:05,600 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:48:05,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:05" (1/1) ... [2024-11-13 12:48:05,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:05" (1/1) ... [2024-11-13 12:48:05,620 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:05" (1/1) ... [2024-11-13 12:48:05,695 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 12:48:05,695 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:05" (1/1) ... [2024-11-13 12:48:05,699 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:05" (1/1) ... [2024-11-13 12:48:05,735 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:05" (1/1) ... [2024-11-13 12:48:05,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:05" (1/1) ... [2024-11-13 12:48:05,783 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:05" (1/1) ... [2024-11-13 12:48:05,796 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:05" (1/1) ... [2024-11-13 12:48:05,814 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:48:05,814 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:48:05,815 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:48:05,815 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:48:05,817 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:05" (1/1) ... [2024-11-13 12:48:05,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:48:05,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6751133-1e72-4c15-ba74-0dba238538db/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:48:05,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6751133-1e72-4c15-ba74-0dba238538db/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 12:48:05,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6751133-1e72-4c15-ba74-0dba238538db/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 12:48:05,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 12:48:05,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 12:48:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:48:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:48:06,128 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:48:06,131 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:48:09,588 INFO L? ?]: Removed 240 outVars from TransFormulas that were not future-live. [2024-11-13 12:48:09,589 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 12:48:09,640 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 12:48:09,640 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 12:48:09,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:48:09 BoogieIcfgContainer [2024-11-13 12:48:09,641 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 12:48:09,643 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 12:48:09,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 12:48:09,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 12:48:09,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 12:48:04" (1/3) ... [2024-11-13 12:48:09,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d18ae34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:48:09, skipping insertion in model container [2024-11-13 12:48:09,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:48:05" (2/3) ... [2024-11-13 12:48:09,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d18ae34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:48:09, skipping insertion in model container [2024-11-13 12:48:09,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:48:09" (3/3) ... [2024-11-13 12:48:09,664 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c [2024-11-13 12:48:09,696 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 12:48:09,701 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_opt-floodmax.5.4.ufo.UNBOUNDED.pals.c that has 1 procedures, 706 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 12:48:09,841 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 12:48:09,861 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;@1aa07beb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 12:48:09,861 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 12:48:09,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 706 states, 704 states have (on average 1.8650568181818181) internal successors, (1313), 705 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states 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 12:48:09,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-13 12:48:09,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:09,902 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] [2024-11-13 12:48:09,902 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:09,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:09,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2138686128, now seen corresponding path program 1 times [2024-11-13 12:48:09,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:09,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253290313] [2024-11-13 12:48:09,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:09,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:11,018 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 12:48:11,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:11,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253290313] [2024-11-13 12:48:11,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253290313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:11,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:11,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:48:11,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850262601] [2024-11-13 12:48:11,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:11,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 12:48:11,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:11,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 12:48:11,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 12:48:11,054 INFO L87 Difference]: Start difference. First operand has 706 states, 704 states have (on average 1.8650568181818181) internal successors, (1313), 705 states have internal predecessors, (1313), 0 states have call successors, (0), 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 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 12:48:11,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:11,145 INFO L93 Difference]: Finished difference Result 858 states and 1587 transitions. [2024-11-13 12:48:11,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 12:48:11,147 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2024-11-13 12:48:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:11,173 INFO L225 Difference]: With dead ends: 858 [2024-11-13 12:48:11,173 INFO L226 Difference]: Without dead ends: 702 [2024-11-13 12:48:11,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 12:48:11,185 INFO L432 NwaCegarLoop]: 1306 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:11,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:11,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2024-11-13 12:48:11,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2024-11-13 12:48:11,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.8630527817403708) internal successors, (1306), 701 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states 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 12:48:11,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1306 transitions. [2024-11-13 12:48:11,300 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1306 transitions. Word has length 153 [2024-11-13 12:48:11,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:11,302 INFO L471 AbstractCegarLoop]: Abstraction has 702 states and 1306 transitions. [2024-11-13 12:48:11,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 12:48:11,302 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1306 transitions. [2024-11-13 12:48:11,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-13 12:48:11,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:11,310 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] [2024-11-13 12:48:11,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 12:48:11,312 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:11,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:11,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1646808078, now seen corresponding path program 1 times [2024-11-13 12:48:11,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:11,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528196009] [2024-11-13 12:48:11,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:11,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:12,420 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 12:48:12,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:12,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528196009] [2024-11-13 12:48:12,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528196009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:12,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:12,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 12:48:12,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586452713] [2024-11-13 12:48:12,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:12,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 12:48:12,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:12,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 12:48:12,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:12,428 INFO L87 Difference]: Start difference. First operand 702 states and 1306 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 12:48:12,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:12,738 INFO L93 Difference]: Finished difference Result 857 states and 1580 transitions. [2024-11-13 12:48:12,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 12:48:12,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2024-11-13 12:48:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:12,746 INFO L225 Difference]: With dead ends: 857 [2024-11-13 12:48:12,746 INFO L226 Difference]: Without dead ends: 702 [2024-11-13 12:48:12,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:12,751 INFO L432 NwaCegarLoop]: 1304 mSDtfsCounter, 0 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5146 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:12,751 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5146 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 12:48:12,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2024-11-13 12:48:12,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 702. [2024-11-13 12:48:12,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 1.7703281027104136) internal successors, (1241), 701 states have internal predecessors, (1241), 0 states have call successors, (0), 0 states 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 12:48:12,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 1241 transitions. [2024-11-13 12:48:12,789 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 1241 transitions. Word has length 153 [2024-11-13 12:48:12,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:12,790 INFO L471 AbstractCegarLoop]: Abstraction has 702 states and 1241 transitions. [2024-11-13 12:48:12,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states 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 12:48:12,791 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 1241 transitions. [2024-11-13 12:48:12,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-13 12:48:12,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:12,795 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] [2024-11-13 12:48:12,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 12:48:12,795 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:12,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash -152403348, now seen corresponding path program 1 times [2024-11-13 12:48:12,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:12,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782025204] [2024-11-13 12:48:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:12,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:13,434 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 12:48:13,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:13,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782025204] [2024-11-13 12:48:13,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782025204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:13,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:13,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:13,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12933367] [2024-11-13 12:48:13,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:13,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:13,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:13,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:13,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:13,442 INFO L87 Difference]: Start difference. First operand 702 states and 1241 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 12:48:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:13,594 INFO L93 Difference]: Finished difference Result 990 states and 1755 transitions. [2024-11-13 12:48:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:13,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2024-11-13 12:48:13,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:13,602 INFO L225 Difference]: With dead ends: 990 [2024-11-13 12:48:13,602 INFO L226 Difference]: Without dead ends: 839 [2024-11-13 12:48:13,604 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 12:48:13,607 INFO L432 NwaCegarLoop]: 1234 mSDtfsCounter, 235 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:13,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2404 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:13,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2024-11-13 12:48:13,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 836. [2024-11-13 12:48:13,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 1.768862275449102) internal successors, (1477), 835 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states 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 12:48:13,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1477 transitions. [2024-11-13 12:48:13,639 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1477 transitions. Word has length 217 [2024-11-13 12:48:13,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:13,642 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1477 transitions. [2024-11-13 12:48:13,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 12:48:13,646 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1477 transitions. [2024-11-13 12:48:13,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-13 12:48:13,653 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:13,653 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] [2024-11-13 12:48:13,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 12:48:13,654 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:13,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:13,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1102639814, now seen corresponding path program 1 times [2024-11-13 12:48:13,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:13,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509952861] [2024-11-13 12:48:13,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:13,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:13,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:14,111 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 12:48:14,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:14,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509952861] [2024-11-13 12:48:14,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509952861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:14,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:14,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:14,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84066432] [2024-11-13 12:48:14,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:14,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:14,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:14,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:14,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:14,115 INFO L87 Difference]: Start difference. First operand 836 states and 1477 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 12:48:14,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:14,186 INFO L93 Difference]: Finished difference Result 1382 states and 2445 transitions. [2024-11-13 12:48:14,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:14,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2024-11-13 12:48:14,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:14,193 INFO L225 Difference]: With dead ends: 1382 [2024-11-13 12:48:14,193 INFO L226 Difference]: Without dead ends: 1097 [2024-11-13 12:48:14,195 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 12:48:14,196 INFO L432 NwaCegarLoop]: 1238 mSDtfsCounter, 235 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:14,199 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2417 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2024-11-13 12:48:14,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 1093. [2024-11-13 12:48:14,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1093 states, 1092 states have (on average 1.7692307692307692) internal successors, (1932), 1092 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states 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 12:48:14,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1093 states to 1093 states and 1932 transitions. [2024-11-13 12:48:14,247 INFO L78 Accepts]: Start accepts. Automaton has 1093 states and 1932 transitions. Word has length 221 [2024-11-13 12:48:14,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:14,247 INFO L471 AbstractCegarLoop]: Abstraction has 1093 states and 1932 transitions. [2024-11-13 12:48:14,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 states 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 12:48:14,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1093 states and 1932 transitions. [2024-11-13 12:48:14,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-13 12:48:14,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:14,254 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] [2024-11-13 12:48:14,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 12:48:14,255 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:14,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:14,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1621831200, now seen corresponding path program 1 times [2024-11-13 12:48:14,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:14,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527205441] [2024-11-13 12:48:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:14,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:14,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:14,686 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 12:48:14,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:14,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527205441] [2024-11-13 12:48:14,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527205441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:14,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:14,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:14,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655713890] [2024-11-13 12:48:14,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:14,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:14,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:14,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:14,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:14,690 INFO L87 Difference]: Start difference. First operand 1093 states and 1932 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 12:48:14,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:14,766 INFO L93 Difference]: Finished difference Result 2129 states and 3766 transitions. [2024-11-13 12:48:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:14,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 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 225 [2024-11-13 12:48:14,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:14,774 INFO L225 Difference]: With dead ends: 2129 [2024-11-13 12:48:14,774 INFO L226 Difference]: Without dead ends: 1587 [2024-11-13 12:48:14,775 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 12:48:14,777 INFO L432 NwaCegarLoop]: 1238 mSDtfsCounter, 227 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 2418 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:14,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 2418 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:14,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2024-11-13 12:48:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1581. [2024-11-13 12:48:14,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 1580 states have (on average 1.7670886075949368) internal successors, (2792), 1580 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states 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 12:48:14,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2792 transitions. [2024-11-13 12:48:14,828 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2792 transitions. Word has length 225 [2024-11-13 12:48:14,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:14,829 INFO L471 AbstractCegarLoop]: Abstraction has 1581 states and 2792 transitions. [2024-11-13 12:48:14,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 12:48:14,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2792 transitions. [2024-11-13 12:48:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2024-11-13 12:48:14,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:14,834 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] [2024-11-13 12:48:14,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 12:48:14,834 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:14,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:14,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1477987206, now seen corresponding path program 1 times [2024-11-13 12:48:14,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:14,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875836209] [2024-11-13 12:48:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:14,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:15,220 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 12:48:15,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:15,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875836209] [2024-11-13 12:48:15,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875836209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:15,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:15,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:15,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710363853] [2024-11-13 12:48:15,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:15,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:15,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:15,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:15,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:15,224 INFO L87 Difference]: Start difference. First operand 1581 states and 2792 transitions. Second operand has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states 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 12:48:15,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:15,392 INFO L93 Difference]: Finished difference Result 3545 states and 6258 transitions. [2024-11-13 12:48:15,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:15,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 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 229 [2024-11-13 12:48:15,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:15,406 INFO L225 Difference]: With dead ends: 3545 [2024-11-13 12:48:15,406 INFO L226 Difference]: Without dead ends: 2515 [2024-11-13 12:48:15,408 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 12:48:15,411 INFO L432 NwaCegarLoop]: 1238 mSDtfsCounter, 219 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:15,412 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 2419 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:15,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2024-11-13 12:48:15,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2505. [2024-11-13 12:48:15,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2505 states, 2504 states have (on average 1.7619808306709266) internal successors, (4412), 2504 states have internal predecessors, (4412), 0 states have call successors, (0), 0 states 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 12:48:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2505 states to 2505 states and 4412 transitions. [2024-11-13 12:48:15,521 INFO L78 Accepts]: Start accepts. Automaton has 2505 states and 4412 transitions. Word has length 229 [2024-11-13 12:48:15,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:15,523 INFO L471 AbstractCegarLoop]: Abstraction has 2505 states and 4412 transitions. [2024-11-13 12:48:15,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states 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 12:48:15,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2505 states and 4412 transitions. [2024-11-13 12:48:15,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2024-11-13 12:48:15,528 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:15,528 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] [2024-11-13 12:48:15,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 12:48:15,529 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:15,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:15,529 INFO L85 PathProgramCache]: Analyzing trace with hash 374670804, now seen corresponding path program 1 times [2024-11-13 12:48:15,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:15,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044385189] [2024-11-13 12:48:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:15,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:15,930 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 12:48:15,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:15,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044385189] [2024-11-13 12:48:15,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044385189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:15,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:15,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:15,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867356386] [2024-11-13 12:48:15,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:15,931 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:15,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:15,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:15,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:15,933 INFO L87 Difference]: Start difference. First operand 2505 states and 4412 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:16,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:16,048 INFO L93 Difference]: Finished difference Result 6221 states and 10942 transitions. [2024-11-13 12:48:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:16,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2024-11-13 12:48:16,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:16,066 INFO L225 Difference]: With dead ends: 6221 [2024-11-13 12:48:16,066 INFO L226 Difference]: Without dead ends: 4267 [2024-11-13 12:48:16,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:16,070 INFO L432 NwaCegarLoop]: 1238 mSDtfsCounter, 211 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:16,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 2420 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:16,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2024-11-13 12:48:16,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4249. [2024-11-13 12:48:16,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4249 states, 4248 states have (on average 1.7542372881355932) internal successors, (7452), 4248 states have internal predecessors, (7452), 0 states have call successors, (0), 0 states 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 12:48:16,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4249 states to 4249 states and 7452 transitions. [2024-11-13 12:48:16,244 INFO L78 Accepts]: Start accepts. Automaton has 4249 states and 7452 transitions. Word has length 233 [2024-11-13 12:48:16,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:16,245 INFO L471 AbstractCegarLoop]: Abstraction has 4249 states and 7452 transitions. [2024-11-13 12:48:16,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:48:16,245 INFO L276 IsEmpty]: Start isEmpty. Operand 4249 states and 7452 transitions. [2024-11-13 12:48:16,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-13 12:48:16,250 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:16,250 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] [2024-11-13 12:48:16,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 12:48:16,250 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:16,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:16,251 INFO L85 PathProgramCache]: Analyzing trace with hash -174480850, now seen corresponding path program 1 times [2024-11-13 12:48:16,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:16,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724985810] [2024-11-13 12:48:16,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:16,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:16,880 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 12:48:16,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:16,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724985810] [2024-11-13 12:48:16,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724985810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:16,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:16,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 12:48:16,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361538974] [2024-11-13 12:48:16,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:16,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 12:48:16,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:16,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 12:48:16,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 12:48:16,884 INFO L87 Difference]: Start difference. First operand 4249 states and 7452 transitions. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 12:48:17,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:17,945 INFO L93 Difference]: Finished difference Result 25437 states and 44870 transitions. [2024-11-13 12:48:17,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 12:48:17,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 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 237 [2024-11-13 12:48:17,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:18,038 INFO L225 Difference]: With dead ends: 25437 [2024-11-13 12:48:18,039 INFO L226 Difference]: Without dead ends: 21739 [2024-11-13 12:48:18,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-11-13 12:48:18,047 INFO L432 NwaCegarLoop]: 1247 mSDtfsCounter, 3289 mSDsluCounter, 9584 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3289 SdHoareTripleChecker+Valid, 10831 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:18,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3289 Valid, 10831 Invalid, 305 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 12:48:18,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21739 states. [2024-11-13 12:48:18,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21739 to 7803. [2024-11-13 12:48:18,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7803 states, 7802 states have (on average 1.7524993591386824) internal successors, (13673), 7802 states have internal predecessors, (13673), 0 states have call successors, (0), 0 states 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 12:48:18,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7803 states to 7803 states and 13673 transitions. [2024-11-13 12:48:18,551 INFO L78 Accepts]: Start accepts. Automaton has 7803 states and 13673 transitions. Word has length 237 [2024-11-13 12:48:18,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:18,552 INFO L471 AbstractCegarLoop]: Abstraction has 7803 states and 13673 transitions. [2024-11-13 12:48:18,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 0 states have call successors, (0), 0 states 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 12:48:18,553 INFO L276 IsEmpty]: Start isEmpty. Operand 7803 states and 13673 transitions. [2024-11-13 12:48:18,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-13 12:48:18,560 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:18,561 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] [2024-11-13 12:48:18,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 12:48:18,561 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:18,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:18,562 INFO L85 PathProgramCache]: Analyzing trace with hash 914648862, now seen corresponding path program 1 times [2024-11-13 12:48:18,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:18,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250961976] [2024-11-13 12:48:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:18,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:19,082 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 12:48:19,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:19,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250961976] [2024-11-13 12:48:19,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250961976] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:19,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:19,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:48:19,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526516010] [2024-11-13 12:48:19,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:19,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:48:19,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:19,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:48:19,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:48:19,089 INFO L87 Difference]: Start difference. First operand 7803 states and 13673 transitions. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 12:48:19,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:19,538 INFO L93 Difference]: Finished difference Result 22737 states and 39991 transitions. [2024-11-13 12:48:19,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:48:19,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2024-11-13 12:48:19,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:19,649 INFO L225 Difference]: With dead ends: 22737 [2024-11-13 12:48:19,649 INFO L226 Difference]: Without dead ends: 15485 [2024-11-13 12:48:19,672 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:19,677 INFO L432 NwaCegarLoop]: 1244 mSDtfsCounter, 779 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:19,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 3911 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15485 states. [2024-11-13 12:48:20,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15485 to 11611. [2024-11-13 12:48:20,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11611 states, 11610 states have (on average 1.753316106804479) internal successors, (20356), 11610 states have internal predecessors, (20356), 0 states have call successors, (0), 0 states 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 12:48:20,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11611 states to 11611 states and 20356 transitions. [2024-11-13 12:48:20,254 INFO L78 Accepts]: Start accepts. Automaton has 11611 states and 20356 transitions. Word has length 238 [2024-11-13 12:48:20,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:20,255 INFO L471 AbstractCegarLoop]: Abstraction has 11611 states and 20356 transitions. [2024-11-13 12:48:20,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 12:48:20,255 INFO L276 IsEmpty]: Start isEmpty. Operand 11611 states and 20356 transitions. [2024-11-13 12:48:20,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-13 12:48:20,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:20,263 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] [2024-11-13 12:48:20,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 12:48:20,264 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:20,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:20,264 INFO L85 PathProgramCache]: Analyzing trace with hash 486935909, now seen corresponding path program 1 times [2024-11-13 12:48:20,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:20,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350188037] [2024-11-13 12:48:20,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:20,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:20,603 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 12:48:20,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:20,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350188037] [2024-11-13 12:48:20,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350188037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:20,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:20,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:48:20,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837673173] [2024-11-13 12:48:20,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:20,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:48:20,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:20,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:48:20,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:48:20,606 INFO L87 Difference]: Start difference. First operand 11611 states and 20356 transitions. Second operand has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 12:48:21,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:21,147 INFO L93 Difference]: Finished difference Result 34131 states and 59931 transitions. [2024-11-13 12:48:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:48:21,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 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 239 [2024-11-13 12:48:21,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:21,216 INFO L225 Difference]: With dead ends: 34131 [2024-11-13 12:48:21,217 INFO L226 Difference]: Without dead ends: 23071 [2024-11-13 12:48:21,234 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:21,235 INFO L432 NwaCegarLoop]: 1230 mSDtfsCounter, 779 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 3899 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:21,235 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 3899 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:21,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23071 states. [2024-11-13 12:48:21,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23071 to 17293. [2024-11-13 12:48:21,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17293 states, 17292 states have (on average 1.7502891510525098) internal successors, (30266), 17292 states have internal predecessors, (30266), 0 states have call successors, (0), 0 states 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 12:48:21,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17293 states to 17293 states and 30266 transitions. [2024-11-13 12:48:21,901 INFO L78 Accepts]: Start accepts. Automaton has 17293 states and 30266 transitions. Word has length 239 [2024-11-13 12:48:21,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:21,902 INFO L471 AbstractCegarLoop]: Abstraction has 17293 states and 30266 transitions. [2024-11-13 12:48:21,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.75) internal successors, (239), 4 states have internal predecessors, (239), 0 states have call successors, (0), 0 states 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 12:48:21,903 INFO L276 IsEmpty]: Start isEmpty. Operand 17293 states and 30266 transitions. [2024-11-13 12:48:21,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-13 12:48:21,914 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:21,914 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] [2024-11-13 12:48:21,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 12:48:21,915 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:21,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:21,915 INFO L85 PathProgramCache]: Analyzing trace with hash 281740597, now seen corresponding path program 1 times [2024-11-13 12:48:21,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:21,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126423078] [2024-11-13 12:48:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:21,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:22,351 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 12:48:22,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:22,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126423078] [2024-11-13 12:48:22,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126423078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:22,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:22,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:48:22,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477826806] [2024-11-13 12:48:22,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:22,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:48:22,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:22,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:48:22,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:48:22,357 INFO L87 Difference]: Start difference. First operand 17293 states and 30266 transitions. Second operand has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 12:48:22,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:22,892 INFO L93 Difference]: Finished difference Result 51239 states and 89823 transitions. [2024-11-13 12:48:22,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:48:22,893 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 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 240 [2024-11-13 12:48:22,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:23,113 INFO L225 Difference]: With dead ends: 51239 [2024-11-13 12:48:23,114 INFO L226 Difference]: Without dead ends: 34497 [2024-11-13 12:48:23,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:23,133 INFO L432 NwaCegarLoop]: 1230 mSDtfsCounter, 777 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 3901 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:23,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 3901 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:23,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34497 states. [2024-11-13 12:48:24,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34497 to 25825. [2024-11-13 12:48:24,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25825 states, 25824 states have (on average 1.747366790582404) internal successors, (45124), 25824 states have internal predecessors, (45124), 0 states have call successors, (0), 0 states 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 12:48:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25825 states to 25825 states and 45124 transitions. [2024-11-13 12:48:24,281 INFO L78 Accepts]: Start accepts. Automaton has 25825 states and 45124 transitions. Word has length 240 [2024-11-13 12:48:24,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:24,282 INFO L471 AbstractCegarLoop]: Abstraction has 25825 states and 45124 transitions. [2024-11-13 12:48:24,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.0) internal successors, (240), 4 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 12:48:24,283 INFO L276 IsEmpty]: Start isEmpty. Operand 25825 states and 45124 transitions. [2024-11-13 12:48:24,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-13 12:48:24,298 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:24,298 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] [2024-11-13 12:48:24,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 12:48:24,299 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:24,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:24,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1580804529, now seen corresponding path program 1 times [2024-11-13 12:48:24,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:24,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076704753] [2024-11-13 12:48:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:24,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:24,624 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 12:48:24,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:24,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076704753] [2024-11-13 12:48:24,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076704753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:24,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:24,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:24,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169423733] [2024-11-13 12:48:24,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:24,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:24,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:24,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:24,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:24,628 INFO L87 Difference]: Start difference. First operand 25825 states and 45124 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 12:48:25,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:25,341 INFO L93 Difference]: Finished difference Result 58012 states and 101594 transitions. [2024-11-13 12:48:25,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:25,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2024-11-13 12:48:25,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:25,443 INFO L225 Difference]: With dead ends: 58012 [2024-11-13 12:48:25,443 INFO L226 Difference]: Without dead ends: 40273 [2024-11-13 12:48:25,470 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 12:48:25,470 INFO L432 NwaCegarLoop]: 1454 mSDtfsCounter, 242 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:25,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 2657 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 12:48:25,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40273 states. [2024-11-13 12:48:26,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40273 to 40271. [2024-11-13 12:48:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40271 states, 40270 states have (on average 1.7433821703501367) internal successors, (70206), 40270 states have internal predecessors, (70206), 0 states have call successors, (0), 0 states 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 12:48:26,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40271 states to 40271 states and 70206 transitions. [2024-11-13 12:48:26,533 INFO L78 Accepts]: Start accepts. Automaton has 40271 states and 70206 transitions. Word has length 241 [2024-11-13 12:48:26,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:26,533 INFO L471 AbstractCegarLoop]: Abstraction has 40271 states and 70206 transitions. [2024-11-13 12:48:26,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 12:48:26,534 INFO L276 IsEmpty]: Start isEmpty. Operand 40271 states and 70206 transitions. [2024-11-13 12:48:26,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-13 12:48:26,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:26,540 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] [2024-11-13 12:48:26,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 12:48:26,540 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:26,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:26,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1993642831, now seen corresponding path program 1 times [2024-11-13 12:48:26,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:26,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124840958] [2024-11-13 12:48:26,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:26,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:26,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:26,943 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 12:48:26,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:26,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124840958] [2024-11-13 12:48:26,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124840958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:26,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:26,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:26,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288822803] [2024-11-13 12:48:26,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:26,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:26,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:26,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:26,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:26,946 INFO L87 Difference]: Start difference. First operand 40271 states and 70206 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 12:48:28,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:28,105 INFO L93 Difference]: Finished difference Result 79333 states and 138255 transitions. [2024-11-13 12:48:28,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:28,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2024-11-13 12:48:28,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:28,310 INFO L225 Difference]: With dead ends: 79333 [2024-11-13 12:48:28,310 INFO L226 Difference]: Without dead ends: 57723 [2024-11-13 12:48:28,346 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 12:48:28,349 INFO L432 NwaCegarLoop]: 1353 mSDtfsCounter, 218 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 2559 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:28,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 2559 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 12:48:28,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57723 states. [2024-11-13 12:48:29,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57723 to 57721. [2024-11-13 12:48:30,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57721 states, 57720 states have (on average 1.7362266112266111) internal successors, (100215), 57720 states have internal predecessors, (100215), 0 states have call successors, (0), 0 states 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 12:48:30,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57721 states to 57721 states and 100215 transitions. [2024-11-13 12:48:30,133 INFO L78 Accepts]: Start accepts. Automaton has 57721 states and 100215 transitions. Word has length 241 [2024-11-13 12:48:30,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:30,134 INFO L471 AbstractCegarLoop]: Abstraction has 57721 states and 100215 transitions. [2024-11-13 12:48:30,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 12:48:30,135 INFO L276 IsEmpty]: Start isEmpty. Operand 57721 states and 100215 transitions. [2024-11-13 12:48:30,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-13 12:48:30,140 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:30,141 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] [2024-11-13 12:48:30,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 12:48:30,142 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:30,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:30,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1612590513, now seen corresponding path program 1 times [2024-11-13 12:48:30,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:30,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451453672] [2024-11-13 12:48:30,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:30,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:30,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:30,706 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 12:48:30,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:30,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451453672] [2024-11-13 12:48:30,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451453672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:30,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:30,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:30,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364919417] [2024-11-13 12:48:30,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:30,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:30,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:30,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:30,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:30,709 INFO L87 Difference]: Start difference. First operand 57721 states and 100215 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 12:48:31,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:31,961 INFO L93 Difference]: Finished difference Result 113059 states and 196285 transitions. [2024-11-13 12:48:31,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:31,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2024-11-13 12:48:31,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:32,290 INFO L225 Difference]: With dead ends: 113059 [2024-11-13 12:48:32,290 INFO L226 Difference]: Without dead ends: 82227 [2024-11-13 12:48:32,313 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 12:48:32,314 INFO L432 NwaCegarLoop]: 1333 mSDtfsCounter, 210 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:32,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 2540 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:32,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82227 states. [2024-11-13 12:48:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82227 to 82225. [2024-11-13 12:48:34,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82225 states, 82224 states have (on average 1.7289964000778362) internal successors, (142165), 82224 states have internal predecessors, (142165), 0 states have call successors, (0), 0 states 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 12:48:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82225 states to 82225 states and 142165 transitions. [2024-11-13 12:48:34,240 INFO L78 Accepts]: Start accepts. Automaton has 82225 states and 142165 transitions. Word has length 241 [2024-11-13 12:48:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:34,241 INFO L471 AbstractCegarLoop]: Abstraction has 82225 states and 142165 transitions. [2024-11-13 12:48:34,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 12:48:34,241 INFO L276 IsEmpty]: Start isEmpty. Operand 82225 states and 142165 transitions. [2024-11-13 12:48:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-13 12:48:34,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:34,247 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] [2024-11-13 12:48:34,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 12:48:34,247 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:34,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:34,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1615342436, now seen corresponding path program 1 times [2024-11-13 12:48:34,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:34,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095842921] [2024-11-13 12:48:34,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:34,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:34,735 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 12:48:34,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:34,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095842921] [2024-11-13 12:48:34,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095842921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:34,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:34,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:48:34,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306372312] [2024-11-13 12:48:34,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:34,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:48:34,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:34,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:48:34,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:48:34,738 INFO L87 Difference]: Start difference. First operand 82225 states and 142165 transitions. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 12:48:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:37,139 INFO L93 Difference]: Finished difference Result 269285 states and 465948 transitions. [2024-11-13 12:48:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:48:37,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2024-11-13 12:48:37,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:37,529 INFO L225 Difference]: With dead ends: 269285 [2024-11-13 12:48:37,529 INFO L226 Difference]: Without dead ends: 187957 [2024-11-13 12:48:37,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 12:48:37,589 INFO L432 NwaCegarLoop]: 1229 mSDtfsCounter, 775 mSDsluCounter, 2417 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 3646 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:37,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 3646 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:37,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187957 states. [2024-11-13 12:48:40,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187957 to 134831. [2024-11-13 12:48:40,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134831 states, 134830 states have (on average 1.7240154268337906) internal successors, (232449), 134830 states have internal predecessors, (232449), 0 states have call successors, (0), 0 states 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 12:48:40,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134831 states to 134831 states and 232449 transitions. [2024-11-13 12:48:40,918 INFO L78 Accepts]: Start accepts. Automaton has 134831 states and 232449 transitions. Word has length 241 [2024-11-13 12:48:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:40,922 INFO L471 AbstractCegarLoop]: Abstraction has 134831 states and 232449 transitions. [2024-11-13 12:48:40,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 12:48:40,923 INFO L276 IsEmpty]: Start isEmpty. Operand 134831 states and 232449 transitions. [2024-11-13 12:48:40,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-13 12:48:40,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:40,932 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] [2024-11-13 12:48:40,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 12:48:40,932 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:40,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:40,933 INFO L85 PathProgramCache]: Analyzing trace with hash -747219889, now seen corresponding path program 1 times [2024-11-13 12:48:40,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:40,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396718793] [2024-11-13 12:48:40,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:40,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:41,212 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 12:48:41,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:41,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396718793] [2024-11-13 12:48:41,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396718793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:41,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:41,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:41,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995802839] [2024-11-13 12:48:41,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:41,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:41,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:41,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:41,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:41,217 INFO L87 Difference]: Start difference. First operand 134831 states and 232449 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 12:48:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:43,983 INFO L93 Difference]: Finished difference Result 301095 states and 518609 transitions. [2024-11-13 12:48:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:43,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2024-11-13 12:48:43,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:44,461 INFO L225 Difference]: With dead ends: 301095 [2024-11-13 12:48:44,462 INFO L226 Difference]: Without dead ends: 207393 [2024-11-13 12:48:44,578 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 12:48:44,579 INFO L432 NwaCegarLoop]: 1397 mSDtfsCounter, 226 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:44,580 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 2602 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 12:48:44,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207393 states. [2024-11-13 12:48:48,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207393 to 207391. [2024-11-13 12:48:48,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207391 states, 207390 states have (on average 1.7134288056319011) internal successors, (355348), 207390 states have internal predecessors, (355348), 0 states have call successors, (0), 0 states 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 12:48:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207391 states to 207391 states and 355348 transitions. [2024-11-13 12:48:49,464 INFO L78 Accepts]: Start accepts. Automaton has 207391 states and 355348 transitions. Word has length 241 [2024-11-13 12:48:49,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:48:49,465 INFO L471 AbstractCegarLoop]: Abstraction has 207391 states and 355348 transitions. [2024-11-13 12:48:49,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 12:48:49,465 INFO L276 IsEmpty]: Start isEmpty. Operand 207391 states and 355348 transitions. [2024-11-13 12:48:49,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-13 12:48:49,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:48:49,472 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] [2024-11-13 12:48:49,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 12:48:49,473 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:48:49,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:48:49,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1765337777, now seen corresponding path program 1 times [2024-11-13 12:48:49,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:48:49,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690085499] [2024-11-13 12:48:49,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:48:49,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:48:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:48:49,951 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 12:48:49,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:48:49,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690085499] [2024-11-13 12:48:49,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690085499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:48:49,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:48:49,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:48:49,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069440288] [2024-11-13 12:48:49,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:48:49,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:48:49,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:48:49,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:48:49,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:48:49,956 INFO L87 Difference]: Start difference. First operand 207391 states and 355348 transitions. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 12:48:54,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:48:54,372 INFO L93 Difference]: Finished difference Result 462136 states and 790754 transitions. [2024-11-13 12:48:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:48:54,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 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 241 [2024-11-13 12:48:54,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:48:54,905 INFO L225 Difference]: With dead ends: 462136 [2024-11-13 12:48:54,905 INFO L226 Difference]: Without dead ends: 317355 [2024-11-13 12:48:55,005 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 12:48:55,006 INFO L432 NwaCegarLoop]: 1442 mSDtfsCounter, 234 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:48:55,007 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 2646 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 12:48:55,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317355 states. [2024-11-13 12:49:01,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317355 to 317353. [2024-11-13 12:49:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317353 states, 317352 states have (on average 1.7007644508306234) internal successors, (539741), 317352 states have internal predecessors, (539741), 0 states have call successors, (0), 0 states 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 12:49:02,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317353 states to 317353 states and 539741 transitions. [2024-11-13 12:49:02,666 INFO L78 Accepts]: Start accepts. Automaton has 317353 states and 539741 transitions. Word has length 241 [2024-11-13 12:49:02,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:49:02,667 INFO L471 AbstractCegarLoop]: Abstraction has 317353 states and 539741 transitions. [2024-11-13 12:49:02,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 12:49:02,667 INFO L276 IsEmpty]: Start isEmpty. Operand 317353 states and 539741 transitions. [2024-11-13 12:49:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-13 12:49:02,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:49:02,670 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] [2024-11-13 12:49:02,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 12:49:02,671 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:49:02,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:49:02,671 INFO L85 PathProgramCache]: Analyzing trace with hash -126369972, now seen corresponding path program 1 times [2024-11-13 12:49:02,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:49:02,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519592842] [2024-11-13 12:49:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:49:02,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:49:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:49:03,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:49:03,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:49:03,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519592842] [2024-11-13 12:49:03,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519592842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:49:03,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:49:03,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:49:03,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790724382] [2024-11-13 12:49:03,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:49:03,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:49:03,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:49:03,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:49:03,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:49:03,148 INFO L87 Difference]: Start difference. First operand 317353 states and 539741 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)