./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label03.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_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/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_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label03.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/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_16e34750-2a18-4e47-9ed2-030791123701/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 89d9992650be4fcd4025f7007fb14b6b521ee1b4b929549cdf6651f6eed1ab75 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 12:51:11,534 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 12:51:11,621 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 12:51:11,630 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 12:51:11,631 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 12:51:11,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 12:51:11,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 12:51:11,668 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 12:51:11,668 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 12:51:11,668 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 12:51:11,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 12:51:11,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 12:51:11,670 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 12:51:11,670 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 12:51:11,670 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 12:51:11,671 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 12:51:11,671 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 12:51:11,671 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 12:51:11,671 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 12:51:11,671 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 12:51:11,671 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 12:51:11,672 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 12:51:11,672 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 12:51:11,672 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 12:51:11,672 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 12:51:11,672 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 12:51:11,672 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 12:51:11,672 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 12:51:11,673 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 12:51:11,673 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 12:51:11,673 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 12:51:11,673 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 12:51:11,673 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:51:11,673 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 12:51:11,673 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 12:51:11,674 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 12:51:11,674 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 12:51:11,674 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 12:51:11,674 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 12:51:11,674 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 12:51:11,674 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 12:51:11,674 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 12:51:11,674 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_16e34750-2a18-4e47-9ed2-030791123701/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 -> 89d9992650be4fcd4025f7007fb14b6b521ee1b4b929549cdf6651f6eed1ab75 [2024-11-13 12:51:11,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 12:51:12,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 12:51:12,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 12:51:12,006 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 12:51:12,006 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 12:51:12,007 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem17_label03.c Unable to find full path for "g++" [2024-11-13 12:51:13,889 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 12:51:14,402 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 12:51:14,402 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/sv-benchmarks/c/eca-rers2012/Problem17_label03.c [2024-11-13 12:51:14,432 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/data/724bef7a8/ed6cd0d1c6df4efc9814969dc31bd56e/FLAG0c5a55146 [2024-11-13 12:51:14,454 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/data/724bef7a8/ed6cd0d1c6df4efc9814969dc31bd56e [2024-11-13 12:51:14,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 12:51:14,458 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 12:51:14,460 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 12:51:14,460 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 12:51:14,464 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 12:51:14,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:51:14" (1/1) ... [2024-11-13 12:51:14,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ce40b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:14, skipping insertion in model container [2024-11-13 12:51:14,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 12:51:14" (1/1) ... [2024-11-13 12:51:14,559 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 12:51:14,836 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_16e34750-2a18-4e47-9ed2-030791123701/sv-benchmarks/c/eca-rers2012/Problem17_label03.c[7281,7294] [2024-11-13 12:51:15,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:51:15,498 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 12:51:15,530 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_16e34750-2a18-4e47-9ed2-030791123701/sv-benchmarks/c/eca-rers2012/Problem17_label03.c[7281,7294] [2024-11-13 12:51:15,878 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 12:51:15,898 INFO L204 MainTranslator]: Completed translation [2024-11-13 12:51:15,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:15 WrapperNode [2024-11-13 12:51:15,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 12:51:15,902 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 12:51:15,902 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 12:51:15,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 12:51:15,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:15" (1/1) ... [2024-11-13 12:51:15,958 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:15" (1/1) ... [2024-11-13 12:51:16,294 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-13 12:51:16,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 12:51:16,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 12:51:16,296 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 12:51:16,296 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 12:51:16,305 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:15" (1/1) ... [2024-11-13 12:51:16,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:15" (1/1) ... [2024-11-13 12:51:16,355 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:15" (1/1) ... [2024-11-13 12:51:16,530 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 12:51:16,530 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:15" (1/1) ... [2024-11-13 12:51:16,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:15" (1/1) ... [2024-11-13 12:51:16,636 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:15" (1/1) ... [2024-11-13 12:51:16,652 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:15" (1/1) ... [2024-11-13 12:51:16,680 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:15" (1/1) ... [2024-11-13 12:51:16,692 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:15" (1/1) ... [2024-11-13 12:51:16,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 12:51:16,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 12:51:16,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 12:51:16,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 12:51:16,751 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:15" (1/1) ... [2024-11-13 12:51:16,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 12:51:16,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:51:16,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 12:51:16,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 12:51:16,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 12:51:16,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 12:51:16,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 12:51:16,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 12:51:16,895 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 12:51:16,897 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 12:51:21,958 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-13 12:51:21,958 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 12:51:21,985 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 12:51:21,985 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 12:51:21,985 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:51:21 BoogieIcfgContainer [2024-11-13 12:51:21,986 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 12:51:21,989 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 12:51:21,989 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 12:51:21,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 12:51:21,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 12:51:14" (1/3) ... [2024-11-13 12:51:21,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ef4e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:51:21, skipping insertion in model container [2024-11-13 12:51:21,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 12:51:15" (2/3) ... [2024-11-13 12:51:21,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ef4e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 12:51:21, skipping insertion in model container [2024-11-13 12:51:21,995 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 12:51:21" (3/3) ... [2024-11-13 12:51:21,996 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label03.c [2024-11-13 12:51:22,016 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 12:51:22,018 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem17_label03.c that has 1 procedures, 590 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 12:51:22,119 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 12:51:22,134 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;@460e3148, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 12:51:22,135 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 12:51:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states 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 12:51:22,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 12:51:22,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:51:22,151 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:51:22,151 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:51:22,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:51:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash -160166280, now seen corresponding path program 1 times [2024-11-13 12:51:22,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:51:22,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621042439] [2024-11-13 12:51:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:51:22,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:51:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:51:22,674 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 12:51:22,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:51:22,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621042439] [2024-11-13 12:51:22,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621042439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:51:22,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:51:22,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:51:22,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628930822] [2024-11-13 12:51:22,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:51:22,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:51:22,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:51:22,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:51:22,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:51:22,706 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:51:25,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:51:25,943 INFO L93 Difference]: Finished difference Result 1680 states and 3074 transitions. [2024-11-13 12:51:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:51:25,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2024-11-13 12:51:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:51:25,972 INFO L225 Difference]: With dead ends: 1680 [2024-11-13 12:51:25,972 INFO L226 Difference]: Without dead ends: 1011 [2024-11-13 12:51:25,980 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:51:25,983 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 532 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 1600 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 1958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:51:25,985 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 217 Invalid, 1958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-13 12:51:26,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2024-11-13 12:51:26,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 996. [2024-11-13 12:51:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 995 states have (on average 1.735678391959799) internal successors, (1727), 995 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states 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 12:51:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1727 transitions. [2024-11-13 12:51:26,065 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1727 transitions. Word has length 49 [2024-11-13 12:51:26,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:51:26,065 INFO L471 AbstractCegarLoop]: Abstraction has 996 states and 1727 transitions. [2024-11-13 12:51:26,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 12:51:26,066 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1727 transitions. [2024-11-13 12:51:26,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-13 12:51:26,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:51:26,069 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:51:26,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 12:51:26,070 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:51:26,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:51:26,070 INFO L85 PathProgramCache]: Analyzing trace with hash -416107971, now seen corresponding path program 1 times [2024-11-13 12:51:26,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:51:26,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405512677] [2024-11-13 12:51:26,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:51:26,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:51:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:51:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:51:26,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:51:26,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405512677] [2024-11-13 12:51:26,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405512677] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:51:26,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:51:26,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 12:51:26,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013930461] [2024-11-13 12:51:26,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:51:26,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:51:26,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:51:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:51:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:51:26,481 INFO L87 Difference]: Start difference. First operand 996 states and 1727 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 12:51:29,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:51:29,489 INFO L93 Difference]: Finished difference Result 2848 states and 4983 transitions. [2024-11-13 12:51:29,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:51:29,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2024-11-13 12:51:29,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:51:29,509 INFO L225 Difference]: With dead ends: 2848 [2024-11-13 12:51:29,510 INFO L226 Difference]: Without dead ends: 1854 [2024-11-13 12:51:29,516 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:51:29,517 INFO L432 NwaCegarLoop]: 515 mSDtfsCounter, 394 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-13 12:51:29,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 590 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-13 12:51:29,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2024-11-13 12:51:29,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1854. [2024-11-13 12:51:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1854 states, 1853 states have (on average 1.4020507285483002) internal successors, (2598), 1853 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states 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 12:51:29,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1854 states to 1854 states and 2598 transitions. [2024-11-13 12:51:29,615 INFO L78 Accepts]: Start accepts. Automaton has 1854 states and 2598 transitions. Word has length 114 [2024-11-13 12:51:29,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:51:29,615 INFO L471 AbstractCegarLoop]: Abstraction has 1854 states and 2598 transitions. [2024-11-13 12:51:29,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 2 states have internal predecessors, (114), 0 states have call successors, (0), 0 states 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 12:51:29,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1854 states and 2598 transitions. [2024-11-13 12:51:29,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-13 12:51:29,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:51:29,624 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 12:51:29,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 12:51:29,625 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:51:29,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:51:29,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2015132075, now seen corresponding path program 1 times [2024-11-13 12:51:29,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:51:29,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482122261] [2024-11-13 12:51:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:51:29,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:51:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:51:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:51:30,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:51:30,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482122261] [2024-11-13 12:51:30,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482122261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:51:30,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:51:30,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:51:30,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695434170] [2024-11-13 12:51:30,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:51:30,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:51:30,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:51:30,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:51:30,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:51:30,093 INFO L87 Difference]: Start difference. First operand 1854 states and 2598 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 12:51:32,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:51:32,897 INFO L93 Difference]: Finished difference Result 5418 states and 7597 transitions. [2024-11-13 12:51:32,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:51:32,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2024-11-13 12:51:32,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:51:32,908 INFO L225 Difference]: With dead ends: 5418 [2024-11-13 12:51:32,908 INFO L226 Difference]: Without dead ends: 2713 [2024-11-13 12:51:32,911 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 12:51:32,912 INFO L432 NwaCegarLoop]: 806 mSDtfsCounter, 458 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 420 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 1677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 420 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 12:51:32,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [458 Valid, 874 Invalid, 1677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [420 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 12:51:32,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2024-11-13 12:51:32,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2710. [2024-11-13 12:51:32,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2710 states, 2709 states have (on average 1.2694721299372462) internal successors, (3439), 2709 states have internal predecessors, (3439), 0 states have call successors, (0), 0 states 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 12:51:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2710 states to 2710 states and 3439 transitions. [2024-11-13 12:51:32,973 INFO L78 Accepts]: Start accepts. Automaton has 2710 states and 3439 transitions. Word has length 119 [2024-11-13 12:51:32,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:51:32,973 INFO L471 AbstractCegarLoop]: Abstraction has 2710 states and 3439 transitions. [2024-11-13 12:51:32,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 12:51:32,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2710 states and 3439 transitions. [2024-11-13 12:51:32,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-13 12:51:32,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:51:32,978 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:51:32,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 12:51:32,978 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:51:32,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:51:32,979 INFO L85 PathProgramCache]: Analyzing trace with hash -297752427, now seen corresponding path program 1 times [2024-11-13 12:51:32,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:51:32,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836867856] [2024-11-13 12:51:32,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:51:32,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:51:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:51:33,416 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 161 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:51:33,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:51:33,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836867856] [2024-11-13 12:51:33,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836867856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:51:33,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:51:33,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:51:33,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743322551] [2024-11-13 12:51:33,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:51:33,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:51:33,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:51:33,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:51:33,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:51:33,418 INFO L87 Difference]: Start difference. First operand 2710 states and 3439 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 12:51:35,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:51:35,396 INFO L93 Difference]: Finished difference Result 7123 states and 9245 transitions. [2024-11-13 12:51:35,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:51:35,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 201 [2024-11-13 12:51:35,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:51:35,411 INFO L225 Difference]: With dead ends: 7123 [2024-11-13 12:51:35,411 INFO L226 Difference]: Without dead ends: 4415 [2024-11-13 12:51:35,414 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 12:51:35,415 INFO L432 NwaCegarLoop]: 727 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 12:51:35,415 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 785 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 12:51:35,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2024-11-13 12:51:35,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 4415. [2024-11-13 12:51:35,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4415 states, 4414 states have (on average 1.2417308563661078) internal successors, (5481), 4414 states have internal predecessors, (5481), 0 states have call successors, (0), 0 states 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 12:51:35,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4415 states to 4415 states and 5481 transitions. [2024-11-13 12:51:35,502 INFO L78 Accepts]: Start accepts. Automaton has 4415 states and 5481 transitions. Word has length 201 [2024-11-13 12:51:35,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:51:35,503 INFO L471 AbstractCegarLoop]: Abstraction has 4415 states and 5481 transitions. [2024-11-13 12:51:35,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 12:51:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 4415 states and 5481 transitions. [2024-11-13 12:51:35,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2024-11-13 12:51:35,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:51:35,511 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:51:35,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 12:51:35,511 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:51:35,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:51:35,511 INFO L85 PathProgramCache]: Analyzing trace with hash 108114444, now seen corresponding path program 1 times [2024-11-13 12:51:35,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:51:35,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505890346] [2024-11-13 12:51:35,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:51:35,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:51:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:51:36,257 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 226 proven. 78 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 12:51:36,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:51:36,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505890346] [2024-11-13 12:51:36,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505890346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:51:36,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484498680] [2024-11-13 12:51:36,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:51:36,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:51:36,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:51:36,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:51:36,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 12:51:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:51:36,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 12:51:36,448 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:51:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 226 proven. 78 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 12:51:36,802 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:51:37,257 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 12:51:37,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484498680] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 12:51:37,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 12:51:37,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-13 12:51:37,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565074164] [2024-11-13 12:51:37,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:51:37,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:51:37,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:51:37,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:51:37,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:51:37,260 INFO L87 Difference]: Start difference. First operand 4415 states and 5481 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 12:51:41,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:51:41,533 INFO L93 Difference]: Finished difference Result 16522 states and 20523 transitions. [2024-11-13 12:51:41,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:51:41,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 278 [2024-11-13 12:51:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:51:41,559 INFO L225 Difference]: With dead ends: 16522 [2024-11-13 12:51:41,560 INFO L226 Difference]: Without dead ends: 11683 [2024-11-13 12:51:41,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 12:51:41,566 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 870 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 710 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 710 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:51:41,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 204 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [710 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-13 12:51:41,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11683 states. [2024-11-13 12:51:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11683 to 11679. [2024-11-13 12:51:41,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11679 states, 11678 states have (on average 1.1909573557115944) internal successors, (13908), 11678 states have internal predecessors, (13908), 0 states have call successors, (0), 0 states 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 12:51:41,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11679 states to 11679 states and 13908 transitions. [2024-11-13 12:51:41,776 INFO L78 Accepts]: Start accepts. Automaton has 11679 states and 13908 transitions. Word has length 278 [2024-11-13 12:51:41,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:51:41,777 INFO L471 AbstractCegarLoop]: Abstraction has 11679 states and 13908 transitions. [2024-11-13 12:51:41,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 12:51:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 11679 states and 13908 transitions. [2024-11-13 12:51:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-13 12:51:41,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:51:41,782 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:51:41,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 12:51:41,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:51:41,986 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:51:41,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:51:41,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1892598888, now seen corresponding path program 1 times [2024-11-13 12:51:41,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:51:41,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550721186] [2024-11-13 12:51:41,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:51:41,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:51:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:51:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-13 12:51:42,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:51:42,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550721186] [2024-11-13 12:51:42,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550721186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:51:42,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:51:42,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:51:42,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900311203] [2024-11-13 12:51:42,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:51:42,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:51:42,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:51:42,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:51:42,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:51:42,416 INFO L87 Difference]: Start difference. First operand 11679 states and 13908 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 12:51:44,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:51:44,928 INFO L93 Difference]: Finished difference Result 30622 states and 36789 transitions. [2024-11-13 12:51:44,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:51:44,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 281 [2024-11-13 12:51:44,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:51:44,971 INFO L225 Difference]: With dead ends: 30622 [2024-11-13 12:51:44,971 INFO L226 Difference]: Without dead ends: 18080 [2024-11-13 12:51:44,981 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 12:51:44,982 INFO L432 NwaCegarLoop]: 667 mSDtfsCounter, 482 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 482 SdHoareTripleChecker+Valid, 711 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-13 12:51:44,983 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [482 Valid, 711 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-13 12:51:45,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18080 states. [2024-11-13 12:51:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18080 to 16797. [2024-11-13 12:51:45,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16797 states, 16796 states have (on average 1.1992140985949036) internal successors, (20142), 16796 states have internal predecessors, (20142), 0 states have call successors, (0), 0 states 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 12:51:45,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16797 states to 16797 states and 20142 transitions. [2024-11-13 12:51:45,266 INFO L78 Accepts]: Start accepts. Automaton has 16797 states and 20142 transitions. Word has length 281 [2024-11-13 12:51:45,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:51:45,267 INFO L471 AbstractCegarLoop]: Abstraction has 16797 states and 20142 transitions. [2024-11-13 12:51:45,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 12:51:45,267 INFO L276 IsEmpty]: Start isEmpty. Operand 16797 states and 20142 transitions. [2024-11-13 12:51:45,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2024-11-13 12:51:45,272 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:51:45,273 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:51:45,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 12:51:45,273 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:51:45,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:51:45,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1332685252, now seen corresponding path program 1 times [2024-11-13 12:51:45,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:51:45,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542825870] [2024-11-13 12:51:45,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:51:45,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:51:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:51:45,752 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 273 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-13 12:51:45,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:51:45,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542825870] [2024-11-13 12:51:45,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542825870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:51:45,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:51:45,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:51:45,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077854506] [2024-11-13 12:51:45,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:51:45,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:51:45,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:51:45,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:51:45,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:51:45,755 INFO L87 Difference]: Start difference. First operand 16797 states and 20142 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 12:51:48,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:51:48,274 INFO L93 Difference]: Finished difference Result 43819 states and 52569 transitions. [2024-11-13 12:51:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:51:48,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 304 [2024-11-13 12:51:48,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:51:48,329 INFO L225 Difference]: With dead ends: 43819 [2024-11-13 12:51:48,330 INFO L226 Difference]: Without dead ends: 26592 [2024-11-13 12:51:48,344 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 12:51:48,345 INFO L432 NwaCegarLoop]: 269 mSDtfsCounter, 446 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 1532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-13 12:51:48,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 319 Invalid, 1532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-13 12:51:48,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26592 states. [2024-11-13 12:51:48,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26592 to 24872. [2024-11-13 12:51:48,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24872 states, 24871 states have (on average 1.1865626633428492) internal successors, (29511), 24871 states have internal predecessors, (29511), 0 states have call successors, (0), 0 states 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 12:51:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24872 states to 24872 states and 29511 transitions. [2024-11-13 12:51:48,698 INFO L78 Accepts]: Start accepts. Automaton has 24872 states and 29511 transitions. Word has length 304 [2024-11-13 12:51:48,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:51:48,699 INFO L471 AbstractCegarLoop]: Abstraction has 24872 states and 29511 transitions. [2024-11-13 12:51:48,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states 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 12:51:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 24872 states and 29511 transitions. [2024-11-13 12:51:48,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-13 12:51:48,705 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:51:48,705 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:51:48,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 12:51:48,706 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:51:48,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:51:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash 715210766, now seen corresponding path program 1 times [2024-11-13 12:51:48,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:51:48,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020784707] [2024-11-13 12:51:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:51:48,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:51:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:51:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 293 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 12:51:49,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:51:49,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020784707] [2024-11-13 12:51:49,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020784707] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:51:49,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773972359] [2024-11-13 12:51:49,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:51:49,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:51:49,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:51:49,621 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:51:49,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 12:51:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:51:49,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 12:51:49,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:51:50,339 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 236 proven. 82 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 12:51:50,340 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 12:51:51,839 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 236 proven. 82 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 12:51:51,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773972359] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 12:51:51,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 12:51:51,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-13 12:51:51,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049170485] [2024-11-13 12:51:51,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 12:51:51,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 12:51:51,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:51:51,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 12:51:51,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 12:51:51,844 INFO L87 Difference]: Start difference. First operand 24872 states and 29511 transitions. Second operand has 9 states, 9 states have (on average 84.44444444444444) internal successors, (760), 9 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 12:52:08,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:52:08,380 INFO L93 Difference]: Finished difference Result 118418 states and 138019 transitions. [2024-11-13 12:52:08,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 12:52:08,381 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 84.44444444444444) internal successors, (760), 9 states have internal predecessors, (760), 0 states have call successors, (0), 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 309 [2024-11-13 12:52:08,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:52:08,484 INFO L225 Difference]: With dead ends: 118418 [2024-11-13 12:52:08,484 INFO L226 Difference]: Without dead ends: 88443 [2024-11-13 12:52:08,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 627 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=327, Unknown=0, NotChecked=0, Total=462 [2024-11-13 12:52:08,507 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 10194 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 12578 mSolverCounterSat, 2915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10194 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 15493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2915 IncrementalHoareTripleChecker+Valid, 12578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2024-11-13 12:52:08,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10194 Valid, 581 Invalid, 15493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2915 Valid, 12578 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2024-11-13 12:52:08,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88443 states. [2024-11-13 12:52:09,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88443 to 81948. [2024-11-13 12:52:09,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81948 states, 81947 states have (on average 1.1485472317473489) internal successors, (94120), 81947 states have internal predecessors, (94120), 0 states have call successors, (0), 0 states 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 12:52:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81948 states to 81948 states and 94120 transitions. [2024-11-13 12:52:09,568 INFO L78 Accepts]: Start accepts. Automaton has 81948 states and 94120 transitions. Word has length 309 [2024-11-13 12:52:09,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:52:09,569 INFO L471 AbstractCegarLoop]: Abstraction has 81948 states and 94120 transitions. [2024-11-13 12:52:09,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 84.44444444444444) internal successors, (760), 9 states have internal predecessors, (760), 0 states have call successors, (0), 0 states 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 12:52:09,570 INFO L276 IsEmpty]: Start isEmpty. Operand 81948 states and 94120 transitions. [2024-11-13 12:52:09,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2024-11-13 12:52:09,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:52:09,582 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:52:09,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 12:52:09,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:52:09,786 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:52:09,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:52:09,786 INFO L85 PathProgramCache]: Analyzing trace with hash -920968170, now seen corresponding path program 1 times [2024-11-13 12:52:09,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:52:09,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932505304] [2024-11-13 12:52:09,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:52:09,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:52:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:52:11,022 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 520 proven. 80 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 12:52:11,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:52:11,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932505304] [2024-11-13 12:52:11,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932505304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 12:52:11,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310492538] [2024-11-13 12:52:11,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:52:11,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:52:11,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 12:52:11,025 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 12:52:11,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 12:52:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:52:11,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 12:52:11,230 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 12:52:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 600 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 12:52:11,878 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 12:52:11,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310492538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:52:11,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 12:52:11,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2024-11-13 12:52:11,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929435802] [2024-11-13 12:52:11,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:52:11,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:52:11,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:52:11,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:52:11,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:52:11,881 INFO L87 Difference]: Start difference. First operand 81948 states and 94120 transitions. Second operand has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 12:52:15,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:52:15,032 INFO L93 Difference]: Finished difference Result 166869 states and 191331 transitions. [2024-11-13 12:52:15,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:52:15,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 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 391 [2024-11-13 12:52:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:52:15,144 INFO L225 Difference]: With dead ends: 166869 [2024-11-13 12:52:15,145 INFO L226 Difference]: Without dead ends: 84923 [2024-11-13 12:52:15,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-13 12:52:15,201 INFO L432 NwaCegarLoop]: 276 mSDtfsCounter, 840 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-13 12:52:15,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 365 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-13 12:52:15,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84923 states. [2024-11-13 12:52:16,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84923 to 83648. [2024-11-13 12:52:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83648 states, 83647 states have (on average 1.1460064317907397) internal successors, (95860), 83647 states have internal predecessors, (95860), 0 states have call successors, (0), 0 states 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 12:52:16,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83648 states to 83648 states and 95860 transitions. [2024-11-13 12:52:16,960 INFO L78 Accepts]: Start accepts. Automaton has 83648 states and 95860 transitions. Word has length 391 [2024-11-13 12:52:16,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:52:16,960 INFO L471 AbstractCegarLoop]: Abstraction has 83648 states and 95860 transitions. [2024-11-13 12:52:16,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 12:52:16,961 INFO L276 IsEmpty]: Start isEmpty. Operand 83648 states and 95860 transitions. [2024-11-13 12:52:16,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2024-11-13 12:52:16,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:52:16,972 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:16,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 12:52:17,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_16e34750-2a18-4e47-9ed2-030791123701/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 12:52:17,173 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:52:17,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:52:17,174 INFO L85 PathProgramCache]: Analyzing trace with hash 517357419, now seen corresponding path program 1 times [2024-11-13 12:52:17,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:52:17,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150680093] [2024-11-13 12:52:17,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:52:17,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:52:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:52:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-13 12:52:17,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:52:17,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150680093] [2024-11-13 12:52:17,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150680093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:52:17,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:52:17,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:52:17,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657049461] [2024-11-13 12:52:17,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:52:17,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:52:17,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:52:17,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:52:17,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:52:17,476 INFO L87 Difference]: Start difference. First operand 83648 states and 95860 transitions. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 12:52:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:52:19,983 INFO L93 Difference]: Finished difference Result 178778 states and 205243 transitions. [2024-11-13 12:52:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:52:19,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 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 453 [2024-11-13 12:52:19,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:52:20,082 INFO L225 Difference]: With dead ends: 178778 [2024-11-13 12:52:20,082 INFO L226 Difference]: Without dead ends: 95132 [2024-11-13 12:52:20,122 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 12:52:20,123 INFO L432 NwaCegarLoop]: 684 mSDtfsCounter, 496 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 1396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:52:20,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 736 Invalid, 1396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 12:52:20,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95132 states. [2024-11-13 12:52:21,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95132 to 92576. [2024-11-13 12:52:21,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92576 states, 92575 states have (on average 1.1426194977045638) internal successors, (105778), 92575 states have internal predecessors, (105778), 0 states have call successors, (0), 0 states 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 12:52:21,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92576 states to 92576 states and 105778 transitions. [2024-11-13 12:52:21,471 INFO L78 Accepts]: Start accepts. Automaton has 92576 states and 105778 transitions. Word has length 453 [2024-11-13 12:52:21,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:52:21,472 INFO L471 AbstractCegarLoop]: Abstraction has 92576 states and 105778 transitions. [2024-11-13 12:52:21,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 12:52:21,472 INFO L276 IsEmpty]: Start isEmpty. Operand 92576 states and 105778 transitions. [2024-11-13 12:52:21,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2024-11-13 12:52:21,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:52:21,484 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:52:21,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 12:52:21,484 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:52:21,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:52:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash -150762332, now seen corresponding path program 1 times [2024-11-13 12:52:21,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:52:21,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274674951] [2024-11-13 12:52:21,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:52:21,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:52:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:52:22,465 INFO L134 CoverageAnalysis]: Checked inductivity of 712 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2024-11-13 12:52:22,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:52:22,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274674951] [2024-11-13 12:52:22,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274674951] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:52:22,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:52:22,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:52:22,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946769247] [2024-11-13 12:52:22,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:52:22,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:52:22,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:52:22,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:52:22,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:52:22,467 INFO L87 Difference]: Start difference. First operand 92576 states and 105778 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 12:52:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:52:25,179 INFO L93 Difference]: Finished difference Result 205649 states and 234589 transitions. [2024-11-13 12:52:25,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:52:25,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 478 [2024-11-13 12:52:25,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:52:25,284 INFO L225 Difference]: With dead ends: 205649 [2024-11-13 12:52:25,284 INFO L226 Difference]: Without dead ends: 112645 [2024-11-13 12:52:25,330 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 12:52:25,331 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 478 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 12:52:25,331 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 237 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 12:52:25,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112645 states. [2024-11-13 12:52:26,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112645 to 96835. [2024-11-13 12:52:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96835 states, 96834 states have (on average 1.136945700890183) internal successors, (110095), 96834 states have internal predecessors, (110095), 0 states have call successors, (0), 0 states 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 12:52:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96835 states to 96835 states and 110095 transitions. [2024-11-13 12:52:26,936 INFO L78 Accepts]: Start accepts. Automaton has 96835 states and 110095 transitions. Word has length 478 [2024-11-13 12:52:26,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:52:26,936 INFO L471 AbstractCegarLoop]: Abstraction has 96835 states and 110095 transitions. [2024-11-13 12:52:26,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 12:52:26,937 INFO L276 IsEmpty]: Start isEmpty. Operand 96835 states and 110095 transitions. [2024-11-13 12:52:26,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2024-11-13 12:52:26,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:52:26,946 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:52:26,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 12:52:26,946 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:52:26,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:52:26,946 INFO L85 PathProgramCache]: Analyzing trace with hash 122422615, now seen corresponding path program 1 times [2024-11-13 12:52:26,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:52:26,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128694585] [2024-11-13 12:52:26,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:52:26,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:52:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:52:27,623 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 554 trivial. 0 not checked. [2024-11-13 12:52:27,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:52:27,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128694585] [2024-11-13 12:52:27,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128694585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:52:27,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:52:27,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:52:27,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943233429] [2024-11-13 12:52:27,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:52:27,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:52:27,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:52:27,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:52:27,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:52:27,626 INFO L87 Difference]: Start difference. First operand 96835 states and 110095 transitions. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 12:52:29,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:52:29,875 INFO L93 Difference]: Finished difference Result 191534 states and 217767 transitions. [2024-11-13 12:52:29,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:52:29,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 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 507 [2024-11-13 12:52:29,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:52:29,952 INFO L225 Difference]: With dead ends: 191534 [2024-11-13 12:52:29,952 INFO L226 Difference]: Without dead ends: 94700 [2024-11-13 12:52:29,980 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 12:52:29,981 INFO L432 NwaCegarLoop]: 662 mSDtfsCounter, 459 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-13 12:52:29,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 725 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-13 12:52:30,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94700 states. [2024-11-13 12:52:31,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94700 to 94698. [2024-11-13 12:52:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94698 states, 94697 states have (on average 1.1040687666979947) internal successors, (104552), 94697 states have internal predecessors, (104552), 0 states have call successors, (0), 0 states 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 12:52:31,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94698 states to 94698 states and 104552 transitions. [2024-11-13 12:52:31,241 INFO L78 Accepts]: Start accepts. Automaton has 94698 states and 104552 transitions. Word has length 507 [2024-11-13 12:52:31,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:52:31,242 INFO L471 AbstractCegarLoop]: Abstraction has 94698 states and 104552 transitions. [2024-11-13 12:52:31,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states 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 12:52:31,242 INFO L276 IsEmpty]: Start isEmpty. Operand 94698 states and 104552 transitions. [2024-11-13 12:52:31,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2024-11-13 12:52:31,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:52:31,261 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:31,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 12:52:31,261 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:52:31,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:52:31,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1651666379, now seen corresponding path program 1 times [2024-11-13 12:52:31,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:52:31,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120017122] [2024-11-13 12:52:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:52:31,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:52:31,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:52:32,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 788 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-13 12:52:32,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:52:32,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120017122] [2024-11-13 12:52:32,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120017122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:52:32,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:52:32,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 12:52:32,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847087438] [2024-11-13 12:52:32,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:52:32,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 12:52:32,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:52:32,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 12:52:32,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:52:32,316 INFO L87 Difference]: Start difference. First operand 94698 states and 104552 transitions. Second operand has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states 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 12:52:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:52:36,265 INFO L93 Difference]: Finished difference Result 249900 states and 274945 transitions. [2024-11-13 12:52:36,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 12:52:36,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 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 550 [2024-11-13 12:52:36,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:52:36,386 INFO L225 Difference]: With dead ends: 249900 [2024-11-13 12:52:36,386 INFO L226 Difference]: Without dead ends: 155204 [2024-11-13 12:52:36,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 12:52:36,417 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 793 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 2544 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 2983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-13 12:52:36,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 222 Invalid, 2983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2544 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-13 12:52:36,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155204 states. [2024-11-13 12:52:37,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155204 to 132208. [2024-11-13 12:52:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132208 states, 132207 states have (on average 1.1014621010990342) internal successors, (145621), 132207 states have internal predecessors, (145621), 0 states have call successors, (0), 0 states 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 12:52:37,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132208 states to 132208 states and 145621 transitions. [2024-11-13 12:52:37,977 INFO L78 Accepts]: Start accepts. Automaton has 132208 states and 145621 transitions. Word has length 550 [2024-11-13 12:52:37,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:52:37,978 INFO L471 AbstractCegarLoop]: Abstraction has 132208 states and 145621 transitions. [2024-11-13 12:52:37,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.0) internal successors, (388), 4 states have internal predecessors, (388), 0 states have call successors, (0), 0 states 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 12:52:37,978 INFO L276 IsEmpty]: Start isEmpty. Operand 132208 states and 145621 transitions. [2024-11-13 12:52:37,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2024-11-13 12:52:37,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:52:37,990 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:37,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 12:52:37,991 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:52:37,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:52:37,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1693302272, now seen corresponding path program 1 times [2024-11-13 12:52:37,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:52:37,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129526576] [2024-11-13 12:52:37,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:52:37,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:52:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:52:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 779 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-13 12:52:38,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:52:38,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129526576] [2024-11-13 12:52:38,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129526576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:52:38,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:52:38,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:52:38,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076733746] [2024-11-13 12:52:38,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:52:38,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:52:38,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:52:38,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:52:38,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:52:38,852 INFO L87 Difference]: Start difference. First operand 132208 states and 145621 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 12:52:42,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:52:42,016 INFO L93 Difference]: Finished difference Result 286986 states and 316644 transitions. [2024-11-13 12:52:42,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:52:42,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 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 552 [2024-11-13 12:52:42,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:52:42,159 INFO L225 Difference]: With dead ends: 286986 [2024-11-13 12:52:42,159 INFO L226 Difference]: Without dead ends: 154355 [2024-11-13 12:52:42,197 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 12:52:42,197 INFO L432 NwaCegarLoop]: 284 mSDtfsCounter, 319 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:52:42,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 341 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 12:52:42,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154355 states. [2024-11-13 12:52:43,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154355 to 147945. [2024-11-13 12:52:43,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147945 states, 147944 states have (on average 1.0840858703293137) internal successors, (160384), 147944 states have internal predecessors, (160384), 0 states have call successors, (0), 0 states 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 12:52:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147945 states to 147945 states and 160384 transitions. [2024-11-13 12:52:44,045 INFO L78 Accepts]: Start accepts. Automaton has 147945 states and 160384 transitions. Word has length 552 [2024-11-13 12:52:44,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:52:44,045 INFO L471 AbstractCegarLoop]: Abstraction has 147945 states and 160384 transitions. [2024-11-13 12:52:44,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states 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 12:52:44,046 INFO L276 IsEmpty]: Start isEmpty. Operand 147945 states and 160384 transitions. [2024-11-13 12:52:44,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2024-11-13 12:52:44,053 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:52:44,053 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:52:44,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 12:52:44,054 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:52:44,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:52:44,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1881431714, now seen corresponding path program 1 times [2024-11-13 12:52:44,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:52:44,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560859108] [2024-11-13 12:52:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:52:44,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:52:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:52:44,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1108 backedges. 596 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-13 12:52:44,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:52:44,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560859108] [2024-11-13 12:52:44,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560859108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:52:44,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:52:44,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:52:44,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972116871] [2024-11-13 12:52:44,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:52:44,991 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:52:44,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:52:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:52:44,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:52:44,992 INFO L87 Difference]: Start difference. First operand 147945 states and 160384 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 12:52:48,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:52:48,349 INFO L93 Difference]: Finished difference Result 301004 states and 325978 transitions. [2024-11-13 12:52:48,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:52:48,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 577 [2024-11-13 12:52:48,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:52:48,492 INFO L225 Difference]: With dead ends: 301004 [2024-11-13 12:52:48,492 INFO L226 Difference]: Without dead ends: 152636 [2024-11-13 12:52:48,532 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 12:52:48,533 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 357 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 1412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 12:52:48,533 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 367 Invalid, 1412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 12:52:48,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152636 states. [2024-11-13 12:52:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152636 to 150465. [2024-11-13 12:52:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150465 states, 150464 states have (on average 1.074004413015738) internal successors, (161599), 150464 states have internal predecessors, (161599), 0 states have call successors, (0), 0 states 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 12:52:50,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150465 states to 150465 states and 161599 transitions. [2024-11-13 12:52:50,180 INFO L78 Accepts]: Start accepts. Automaton has 150465 states and 161599 transitions. Word has length 577 [2024-11-13 12:52:50,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:52:50,180 INFO L471 AbstractCegarLoop]: Abstraction has 150465 states and 161599 transitions. [2024-11-13 12:52:50,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 12:52:50,180 INFO L276 IsEmpty]: Start isEmpty. Operand 150465 states and 161599 transitions. [2024-11-13 12:52:50,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2024-11-13 12:52:50,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:52:50,192 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 12:52:50,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 12:52:50,192 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:52:50,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:52:50,193 INFO L85 PathProgramCache]: Analyzing trace with hash 420450953, now seen corresponding path program 1 times [2024-11-13 12:52:50,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:52:50,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570945402] [2024-11-13 12:52:50,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:52:50,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:52:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:52:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1422 backedges. 909 proven. 0 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2024-11-13 12:52:50,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:52:50,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570945402] [2024-11-13 12:52:50,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570945402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:52:50,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:52:50,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:52:50,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846687195] [2024-11-13 12:52:50,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:52:50,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:52:50,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:52:50,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:52:50,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:52:50,974 INFO L87 Difference]: Start difference. First operand 150465 states and 161599 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 12:52:53,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 12:52:53,838 INFO L93 Difference]: Finished difference Result 315004 states and 337938 transitions. [2024-11-13 12:52:53,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 12:52:53,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 589 [2024-11-13 12:52:53,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 12:52:53,996 INFO L225 Difference]: With dead ends: 315004 [2024-11-13 12:52:53,996 INFO L226 Difference]: Without dead ends: 164540 [2024-11-13 12:52:54,047 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 12:52:54,048 INFO L432 NwaCegarLoop]: 766 mSDtfsCounter, 325 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 12:52:54,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 830 Invalid, 1315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 12:52:54,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164540 states. [2024-11-13 12:52:56,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164540 to 158572. [2024-11-13 12:52:56,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158572 states, 158571 states have (on average 1.068549734819103) internal successors, (169441), 158571 states have internal predecessors, (169441), 0 states have call successors, (0), 0 states 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 12:52:56,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158572 states to 158572 states and 169441 transitions. [2024-11-13 12:52:56,459 INFO L78 Accepts]: Start accepts. Automaton has 158572 states and 169441 transitions. Word has length 589 [2024-11-13 12:52:56,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 12:52:56,460 INFO L471 AbstractCegarLoop]: Abstraction has 158572 states and 169441 transitions. [2024-11-13 12:52:56,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 12:52:56,460 INFO L276 IsEmpty]: Start isEmpty. Operand 158572 states and 169441 transitions. [2024-11-13 12:52:56,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2024-11-13 12:52:56,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 12:52:56,468 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:52:56,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 12:52:56,469 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 12:52:56,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 12:52:56,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1592287176, now seen corresponding path program 1 times [2024-11-13 12:52:56,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 12:52:56,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296886823] [2024-11-13 12:52:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 12:52:56,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 12:52:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 12:52:56,974 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-13 12:52:56,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 12:52:56,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296886823] [2024-11-13 12:52:56,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296886823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 12:52:56,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 12:52:56,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 12:52:56,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408870104] [2024-11-13 12:52:56,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 12:52:56,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 12:52:56,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 12:52:56,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 12:52:56,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 12:52:56,977 INFO L87 Difference]: Start difference. First operand 158572 states and 169441 transitions. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)