./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-simple/nested_6.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_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/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_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-simple/nested_6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/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_e4313d79-c6ab-46e2-b027-b1c285e586a9/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 e0e55420715ff80c27c9ff14eb8ac6a520210206e33b4fd081fea4bf1c2e05be --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:06:16,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:06:16,439 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:06:16,452 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:06:16,452 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:06:16,509 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:06:16,510 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:06:16,512 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:06:16,513 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:06:16,513 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:06:16,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:06:16,514 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:06:16,514 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:06:16,515 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:06:16,515 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:06:16,517 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:06:16,517 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:06:16,518 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:06:16,518 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:06:16,518 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:06:16,518 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:06:16,518 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:06:16,518 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:06:16,519 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:06:16,519 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:06:16,519 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:06:16,519 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:06:16,519 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:06:16,519 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:06:16,520 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:06:16,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:06:16,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:06:16,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:06:16,520 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:06:16,520 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:06:16,520 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:06:16,520 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:06:16,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:06:16,521 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:06:16,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:06:16,521 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:06:16,521 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:06:16,521 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_e4313d79-c6ab-46e2-b027-b1c285e586a9/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 -> e0e55420715ff80c27c9ff14eb8ac6a520210206e33b4fd081fea4bf1c2e05be [2024-11-13 14:06:17,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:06:17,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:06:17,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:06:17,061 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:06:17,061 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:06:17,063 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/loop-simple/nested_6.c Unable to find full path for "g++" [2024-11-13 14:06:19,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:06:20,250 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:06:20,251 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/sv-benchmarks/c/loop-simple/nested_6.c [2024-11-13 14:06:20,262 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/data/123f6355e/553a349454da4b58a0406ddb6fc28b53/FLAG7fb5411a1 [2024-11-13 14:06:20,536 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/data/123f6355e/553a349454da4b58a0406ddb6fc28b53 [2024-11-13 14:06:20,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:06:20,542 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:06:20,545 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:06:20,545 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:06:20,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:06:20,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:06:20" (1/1) ... [2024-11-13 14:06:20,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@135fd732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20, skipping insertion in model container [2024-11-13 14:06:20,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:06:20" (1/1) ... [2024-11-13 14:06:20,580 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:06:20,828 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_e4313d79-c6ab-46e2-b027-b1c285e586a9/sv-benchmarks/c/loop-simple/nested_6.c[959,972] [2024-11-13 14:06:20,836 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:06:20,856 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:06:20,884 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_e4313d79-c6ab-46e2-b027-b1c285e586a9/sv-benchmarks/c/loop-simple/nested_6.c[959,972] [2024-11-13 14:06:20,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:06:20,916 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:06:20,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20 WrapperNode [2024-11-13 14:06:20,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:06:20,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:06:20,921 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:06:20,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:06:20,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20" (1/1) ... [2024-11-13 14:06:20,941 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20" (1/1) ... [2024-11-13 14:06:20,973 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2024-11-13 14:06:20,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:06:20,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:06:20,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:06:20,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:06:20,991 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20" (1/1) ... [2024-11-13 14:06:20,992 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20" (1/1) ... [2024-11-13 14:06:20,993 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20" (1/1) ... [2024-11-13 14:06:21,014 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 14:06:21,016 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20" (1/1) ... [2024-11-13 14:06:21,018 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20" (1/1) ... [2024-11-13 14:06:21,021 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20" (1/1) ... [2024-11-13 14:06:21,033 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20" (1/1) ... [2024-11-13 14:06:21,035 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20" (1/1) ... [2024-11-13 14:06:21,039 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20" (1/1) ... [2024-11-13 14:06:21,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:06:21,042 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:06:21,042 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:06:21,042 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:06:21,048 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20" (1/1) ... [2024-11-13 14:06:21,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:06:21,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:21,101 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:06:21,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:06:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:06:21,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:06:21,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:06:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:06:21,252 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:06:21,256 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:06:21,445 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-13 14:06:21,446 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:06:21,461 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:06:21,462 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-13 14:06:21,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:06:21 BoogieIcfgContainer [2024-11-13 14:06:21,464 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:06:21,469 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:06:21,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:06:21,477 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:06:21,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:06:20" (1/3) ... [2024-11-13 14:06:21,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148748e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:06:21, skipping insertion in model container [2024-11-13 14:06:21,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:06:20" (2/3) ... [2024-11-13 14:06:21,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@148748e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:06:21, skipping insertion in model container [2024-11-13 14:06:21,481 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:06:21" (3/3) ... [2024-11-13 14:06:21,484 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_6.c [2024-11-13 14:06:21,508 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:06:21,512 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG nested_6.c that has 1 procedures, 20 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-13 14:06:21,584 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:06:21,603 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;@65f1875c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:06:21,603 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:06:21,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states 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 14:06:21,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 14:06:21,617 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:21,618 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 14:06:21,619 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:21,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:21,626 INFO L85 PathProgramCache]: Analyzing trace with hash 28698854, now seen corresponding path program 1 times [2024-11-13 14:06:21,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:21,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462642835] [2024-11-13 14:06:21,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:21,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:21,929 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 14:06:21,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:21,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462642835] [2024-11-13 14:06:21,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462642835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:06:21,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:06:21,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:06:21,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078610320] [2024-11-13 14:06:21,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:06:21,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:06:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:21,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:06:21,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:06:21,975 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 14:06:22,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:22,033 INFO L93 Difference]: Finished difference Result 49 states and 85 transitions. [2024-11-13 14:06:22,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:06:22,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2024-11-13 14:06:22,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:22,044 INFO L225 Difference]: With dead ends: 49 [2024-11-13 14:06:22,045 INFO L226 Difference]: Without dead ends: 27 [2024-11-13 14:06:22,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 14:06:22,059 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:22,064 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 41 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:06:22,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-13 14:06:22,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 17. [2024-11-13 14:06:22,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states 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 14:06:22,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-11-13 14:06:22,110 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 5 [2024-11-13 14:06:22,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:22,110 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-13 14:06:22,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states 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 14:06:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-11-13 14:06:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 14:06:22,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:22,112 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:22,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:06:22,113 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:22,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:22,114 INFO L85 PathProgramCache]: Analyzing trace with hash 270716236, now seen corresponding path program 1 times [2024-11-13 14:06:22,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:22,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484886340] [2024-11-13 14:06:22,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:22,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:22,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:22,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:22,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484886340] [2024-11-13 14:06:22,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484886340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:06:22,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:06:22,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:06:22,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831713984] [2024-11-13 14:06:22,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:06:22,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:06:22,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:22,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:06:22,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:06:22,243 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 14:06:22,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:22,276 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2024-11-13 14:06:22,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:06:22,277 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2024-11-13 14:06:22,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:22,278 INFO L225 Difference]: With dead ends: 40 [2024-11-13 14:06:22,278 INFO L226 Difference]: Without dead ends: 26 [2024-11-13 14:06:22,279 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 14:06:22,280 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:22,281 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 34 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:06:22,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-13 14:06:22,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2024-11-13 14:06:22,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 14:06:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2024-11-13 14:06:22,289 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 8 [2024-11-13 14:06:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:22,289 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2024-11-13 14:06:22,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states 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 14:06:22,290 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2024-11-13 14:06:22,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 14:06:22,291 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:22,291 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:22,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:06:22,291 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:22,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:22,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1878842878, now seen corresponding path program 1 times [2024-11-13 14:06:22,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:22,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160921489] [2024-11-13 14:06:22,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:22,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:22,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:22,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160921489] [2024-11-13 14:06:22,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160921489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:06:22,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:06:22,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:06:22,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754342582] [2024-11-13 14:06:22,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:06:22,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:06:22,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:22,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:06:22,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:06:22,418 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 14:06:22,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:22,468 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2024-11-13 14:06:22,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:06:22,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2024-11-13 14:06:22,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:22,469 INFO L225 Difference]: With dead ends: 40 [2024-11-13 14:06:22,470 INFO L226 Difference]: Without dead ends: 25 [2024-11-13 14:06:22,470 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 14:06:22,471 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:22,472 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:06:22,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-13 14:06:22,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2024-11-13 14:06:22,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 14:06:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2024-11-13 14:06:22,477 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 11 [2024-11-13 14:06:22,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:22,477 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2024-11-13 14:06:22,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 14:06:22,478 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2024-11-13 14:06:22,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 14:06:22,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:22,478 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:22,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:06:22,479 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:22,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:22,480 INFO L85 PathProgramCache]: Analyzing trace with hash -475426180, now seen corresponding path program 1 times [2024-11-13 14:06:22,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:22,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243759549] [2024-11-13 14:06:22,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:22,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:22,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:22,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243759549] [2024-11-13 14:06:22,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243759549] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:06:22,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:06:22,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:06:22,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964701185] [2024-11-13 14:06:22,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:06:22,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:06:22,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:22,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:06:22,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:06:22,608 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 14:06:22,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:22,636 INFO L93 Difference]: Finished difference Result 40 states and 53 transitions. [2024-11-13 14:06:22,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:06:22,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-11-13 14:06:22,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:22,638 INFO L225 Difference]: With dead ends: 40 [2024-11-13 14:06:22,639 INFO L226 Difference]: Without dead ends: 24 [2024-11-13 14:06:22,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 14:06:22,640 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:22,641 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:06:22,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-13 14:06:22,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2024-11-13 14:06:22,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 14:06:22,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-13 14:06:22,648 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 14 [2024-11-13 14:06:22,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:22,648 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-13 14:06:22,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 14:06:22,649 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-11-13 14:06:22,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 14:06:22,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:22,650 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:22,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:06:22,650 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:22,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash -546064570, now seen corresponding path program 1 times [2024-11-13 14:06:22,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:22,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036840798] [2024-11-13 14:06:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:22,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:22,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:22,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:22,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036840798] [2024-11-13 14:06:22,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036840798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:06:22,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:06:22,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:06:22,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4487397] [2024-11-13 14:06:22,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:06:22,749 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:06:22,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:22,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:06:22,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:06:22,754 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 14:06:22,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:22,788 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2024-11-13 14:06:22,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:06:22,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2024-11-13 14:06:22,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:22,790 INFO L225 Difference]: With dead ends: 40 [2024-11-13 14:06:22,791 INFO L226 Difference]: Without dead ends: 23 [2024-11-13 14:06:22,791 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 14:06:22,792 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:22,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 34 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:06:22,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-13 14:06:22,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-11-13 14:06:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.3) internal successors, (26), 20 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 14:06:22,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2024-11-13 14:06:22,800 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 17 [2024-11-13 14:06:22,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:22,800 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 26 transitions. [2024-11-13 14:06:22,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states 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 14:06:22,801 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 26 transitions. [2024-11-13 14:06:22,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:06:22,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:22,802 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] [2024-11-13 14:06:22,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:06:22,804 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:22,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:22,805 INFO L85 PathProgramCache]: Analyzing trace with hash -190766116, now seen corresponding path program 1 times [2024-11-13 14:06:22,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:22,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796477457] [2024-11-13 14:06:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:22,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:22,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:22,925 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:22,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:22,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796477457] [2024-11-13 14:06:22,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796477457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:06:22,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:06:22,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:06:22,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542987952] [2024-11-13 14:06:22,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:06:22,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:06:22,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:22,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:06:22,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:06:22,929 INFO L87 Difference]: Start difference. First operand 21 states and 26 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 14:06:22,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:22,953 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2024-11-13 14:06:22,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:06:22,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2024-11-13 14:06:22,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:22,955 INFO L225 Difference]: With dead ends: 40 [2024-11-13 14:06:22,955 INFO L226 Difference]: Without dead ends: 22 [2024-11-13 14:06:22,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 14:06:22,956 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:22,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:06:22,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-13 14:06:22,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-13 14:06:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 14:06:22,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-13 14:06:22,963 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 20 [2024-11-13 14:06:22,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:22,964 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-13 14:06:22,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 14:06:22,964 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-13 14:06:22,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 14:06:22,965 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:22,965 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] [2024-11-13 14:06:22,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:06:22,966 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:22,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:22,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1062941368, now seen corresponding path program 1 times [2024-11-13 14:06:22,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:22,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656367616] [2024-11-13 14:06:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:22,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:23,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:23,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656367616] [2024-11-13 14:06:23,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656367616] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:23,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809193998] [2024-11-13 14:06:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:23,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:23,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:23,061 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:23,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:06:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:23,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:06:23,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:23,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:23,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809193998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:06:23,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:06:23,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 14:06:23,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990421733] [2024-11-13 14:06:23,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:06:23,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:06:23,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:23,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:06:23,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:06:23,302 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 14:06:23,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:23,355 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2024-11-13 14:06:23,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:06:23,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 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 21 [2024-11-13 14:06:23,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:23,357 INFO L225 Difference]: With dead ends: 44 [2024-11-13 14:06:23,357 INFO L226 Difference]: Without dead ends: 25 [2024-11-13 14:06:23,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:06:23,361 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:23,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:06:23,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-13 14:06:23,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-13 14:06:23,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 14:06:23,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2024-11-13 14:06:23,378 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 21 [2024-11-13 14:06:23,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:23,378 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2024-11-13 14:06:23,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 14:06:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2024-11-13 14:06:23,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 14:06:23,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:23,379 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:23,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:06:23,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 14:06:23,581 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:23,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:23,582 INFO L85 PathProgramCache]: Analyzing trace with hash -635700516, now seen corresponding path program 2 times [2024-11-13 14:06:23,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:23,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285121045] [2024-11-13 14:06:23,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:23,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:06:23,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:23,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285121045] [2024-11-13 14:06:23,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285121045] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:23,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429566858] [2024-11-13 14:06:23,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:06:23,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:23,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:23,701 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:23,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:06:23,809 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:06:23,809 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:06:23,810 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:06:23,812 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:23,928 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:23,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:06:24,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429566858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:06:24,048 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:06:24,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 10 [2024-11-13 14:06:24,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044988564] [2024-11-13 14:06:24,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:06:24,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:06:24,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:24,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:06:24,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:06:24,053 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states 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 14:06:24,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:24,393 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2024-11-13 14:06:24,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 14:06:24,394 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 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 24 [2024-11-13 14:06:24,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:24,395 INFO L225 Difference]: With dead ends: 66 [2024-11-13 14:06:24,395 INFO L226 Difference]: Without dead ends: 44 [2024-11-13 14:06:24,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:06:24,397 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 9 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:24,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 91 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:06:24,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-13 14:06:24,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2024-11-13 14:06:24,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2) internal successors, (42), 35 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 14:06:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2024-11-13 14:06:24,415 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 24 [2024-11-13 14:06:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:24,416 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2024-11-13 14:06:24,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states 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 14:06:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2024-11-13 14:06:24,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 14:06:24,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:24,420 INFO L215 NwaCegarLoop]: trace histogram [12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:06:24,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:06:24,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 14:06:24,626 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:24,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:24,627 INFO L85 PathProgramCache]: Analyzing trace with hash -2135011322, now seen corresponding path program 3 times [2024-11-13 14:06:24,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:24,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361072966] [2024-11-13 14:06:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:24,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:24,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-13 14:06:24,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:24,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361072966] [2024-11-13 14:06:24,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361072966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:24,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193269297] [2024-11-13 14:06:24,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:06:24,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:24,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:24,752 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:24,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:06:24,810 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 14:06:24,810 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:06:24,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:06:24,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:24,932 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-13 14:06:24,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:25,082 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-13 14:06:25,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193269297] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:06:25,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:06:25,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-13 14:06:25,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926709673] [2024-11-13 14:06:25,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:06:25,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:06:25,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:25,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:06:25,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:06:25,090 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:25,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:25,385 INFO L93 Difference]: Finished difference Result 323 states and 384 transitions. [2024-11-13 14:06:25,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:06:25,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-13 14:06:25,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:25,389 INFO L225 Difference]: With dead ends: 323 [2024-11-13 14:06:25,394 INFO L226 Difference]: Without dead ends: 290 [2024-11-13 14:06:25,395 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:06:25,395 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 82 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:25,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 73 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:06:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-13 14:06:25,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 210. [2024-11-13 14:06:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 1.1770334928229664) internal successors, (246), 209 states have internal predecessors, (246), 0 states have call successors, (0), 0 states 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 14:06:25,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 246 transitions. [2024-11-13 14:06:25,499 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 246 transitions. Word has length 35 [2024-11-13 14:06:25,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:25,503 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 246 transitions. [2024-11-13 14:06:25,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:25,504 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 246 transitions. [2024-11-13 14:06:25,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-13 14:06:25,516 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:25,517 INFO L215 NwaCegarLoop]: trace histogram [96, 16, 16, 16, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-13 14:06:25,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:06:25,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 14:06:25,718 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:25,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:25,720 INFO L85 PathProgramCache]: Analyzing trace with hash -428273306, now seen corresponding path program 4 times [2024-11-13 14:06:25,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:25,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722957710] [2024-11-13 14:06:25,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:25,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:26,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6790 backedges. 2573 proven. 1 refuted. 0 times theorem prover too weak. 4216 trivial. 0 not checked. [2024-11-13 14:06:26,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:26,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722957710] [2024-11-13 14:06:26,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722957710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:26,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269961200] [2024-11-13 14:06:26,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:06:26,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:26,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:26,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:26,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:06:26,486 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:06:26,486 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:06:26,489 INFO L255 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:06:26,496 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:26,614 INFO L134 CoverageAnalysis]: Checked inductivity of 6790 backedges. 1492 proven. 53 refuted. 0 times theorem prover too weak. 5245 trivial. 0 not checked. [2024-11-13 14:06:26,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:26,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6790 backedges. 1492 proven. 53 refuted. 0 times theorem prover too weak. 5245 trivial. 0 not checked. [2024-11-13 14:06:26,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269961200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:06:26,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:06:26,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-11-13 14:06:26,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993765234] [2024-11-13 14:06:26,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:06:26,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:06:26,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:26,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:06:26,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:06:26,767 INFO L87 Difference]: Start difference. First operand 210 states and 246 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:27,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:27,423 INFO L93 Difference]: Finished difference Result 1636 states and 1960 transitions. [2024-11-13 14:06:27,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 14:06:27,423 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2024-11-13 14:06:27,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:27,434 INFO L225 Difference]: With dead ends: 1636 [2024-11-13 14:06:27,435 INFO L226 Difference]: Without dead ends: 1430 [2024-11-13 14:06:27,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:06:27,438 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 48 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:27,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 68 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:06:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2024-11-13 14:06:27,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 966. [2024-11-13 14:06:27,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 965 states have (on average 1.133678756476684) internal successors, (1094), 965 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states 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 14:06:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1094 transitions. [2024-11-13 14:06:27,779 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1094 transitions. Word has length 209 [2024-11-13 14:06:27,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:27,780 INFO L471 AbstractCegarLoop]: Abstraction has 966 states and 1094 transitions. [2024-11-13 14:06:27,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:27,781 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1094 transitions. [2024-11-13 14:06:27,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2024-11-13 14:06:27,839 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:27,840 INFO L215 NwaCegarLoop]: trace histogram [576, 96, 96, 96, 16, 16, 16, 8, 8, 8, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-13 14:06:27,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:06:28,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:28,044 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:28,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:28,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1176041402, now seen corresponding path program 5 times [2024-11-13 14:06:28,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:28,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055730902] [2024-11-13 14:06:28,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:28,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 236772 backedges. 88966 proven. 1 refuted. 0 times theorem prover too weak. 147805 trivial. 0 not checked. [2024-11-13 14:06:29,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:29,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055730902] [2024-11-13 14:06:29,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055730902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:29,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373139367] [2024-11-13 14:06:29,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:06:29,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:29,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:29,938 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:29,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:06:30,435 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2024-11-13 14:06:30,435 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:06:30,441 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:06:30,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:06:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 236772 backedges. 126024 proven. 1853 refuted. 0 times theorem prover too weak. 108895 trivial. 0 not checked. [2024-11-13 14:06:30,993 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:06:31,443 INFO L134 CoverageAnalysis]: Checked inductivity of 236772 backedges. 126024 proven. 1853 refuted. 0 times theorem prover too weak. 108895 trivial. 0 not checked. [2024-11-13 14:06:31,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373139367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:06:31,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:06:31,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2024-11-13 14:06:31,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746594303] [2024-11-13 14:06:31,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:06:31,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:06:31,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:06:31,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:06:31,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:06:31,451 INFO L87 Difference]: Start difference. First operand 966 states and 1094 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:33,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:06:33,230 INFO L93 Difference]: Finished difference Result 9292 states and 10568 transitions. [2024-11-13 14:06:33,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 14:06:33,231 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 965 [2024-11-13 14:06:33,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:06:33,284 INFO L225 Difference]: With dead ends: 9292 [2024-11-13 14:06:33,284 INFO L226 Difference]: Without dead ends: 8330 [2024-11-13 14:06:33,291 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1944 GetRequests, 1924 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=294, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:06:33,292 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 84 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:06:33,293 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 92 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:06:33,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8330 states. [2024-11-13 14:06:34,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8330 to 5562. [2024-11-13 14:06:34,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5562 states, 5561 states have (on average 1.1260564646646287) internal successors, (6262), 5561 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states 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 14:06:34,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 6262 transitions. [2024-11-13 14:06:34,546 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 6262 transitions. Word has length 965 [2024-11-13 14:06:34,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:06:34,547 INFO L471 AbstractCegarLoop]: Abstraction has 5562 states and 6262 transitions. [2024-11-13 14:06:34,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:06:34,547 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 6262 transitions. [2024-11-13 14:06:35,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5562 [2024-11-13 14:06:35,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:06:35,704 INFO L215 NwaCegarLoop]: trace histogram [3456, 576, 576, 576, 96, 96, 96, 16, 16, 16, 8, 8, 8, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-13 14:06:35,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:06:35,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:35,905 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:06:35,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:06:35,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1533183078, now seen corresponding path program 6 times [2024-11-13 14:06:35,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:06:35,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316967907] [2024-11-13 14:06:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:06:35,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:06:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:06:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 8528834 backedges. 1866278 proven. 66653 refuted. 0 times theorem prover too weak. 6595903 trivial. 0 not checked. [2024-11-13 14:06:57,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:06:57,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316967907] [2024-11-13 14:06:57,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316967907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:06:57,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305003027] [2024-11-13 14:06:57,649 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:06:57,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:06:57,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:06:57,653 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:06:57,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:07:05,487 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 467 check-sat command(s) [2024-11-13 14:07:05,487 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:07:05,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 5196 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:07:05,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:07:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 8528834 backedges. 1866288 proven. 66653 refuted. 0 times theorem prover too weak. 6595893 trivial. 0 not checked. [2024-11-13 14:07:07,633 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:07:09,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8528834 backedges. 1866288 proven. 66653 refuted. 0 times theorem prover too weak. 6595893 trivial. 0 not checked. [2024-11-13 14:07:09,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305003027] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:07:09,565 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:07:09,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-13 14:07:09,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637512702] [2024-11-13 14:07:09,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:07:09,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:07:09,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:07:09,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:07:09,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:07:09,577 INFO L87 Difference]: Start difference. First operand 5562 states and 6262 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 14:07:11,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:07:11,459 INFO L93 Difference]: Finished difference Result 21469 states and 24190 transitions. [2024-11-13 14:07:11,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:07:11,460 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 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 5561 [2024-11-13 14:07:11,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:07:11,550 INFO L225 Difference]: With dead ends: 21469 [2024-11-13 14:07:11,550 INFO L226 Difference]: Without dead ends: 16602 [2024-11-13 14:07:11,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11125 GetRequests, 11118 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:07:11,563 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 18 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:07:11,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 88 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:07:11,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16602 states. [2024-11-13 14:07:14,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16602 to 16602. [2024-11-13 14:07:14,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16602 states, 16601 states have (on average 1.125112945003313) internal successors, (18678), 16601 states have internal predecessors, (18678), 0 states have call successors, (0), 0 states 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 14:07:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16602 states to 16602 states and 18678 transitions. [2024-11-13 14:07:14,285 INFO L78 Accepts]: Start accepts. Automaton has 16602 states and 18678 transitions. Word has length 5561 [2024-11-13 14:07:14,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:07:14,288 INFO L471 AbstractCegarLoop]: Abstraction has 16602 states and 18678 transitions. [2024-11-13 14:07:14,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 9 states have internal predecessors, (92), 0 states have call successors, (0), 0 states 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 14:07:14,289 INFO L276 IsEmpty]: Start isEmpty. Operand 16602 states and 18678 transitions. [2024-11-13 14:07:16,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16602 [2024-11-13 14:07:16,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:07:16,836 INFO L215 NwaCegarLoop]: trace histogram [10368, 1728, 1728, 1728, 288, 288, 288, 48, 48, 48, 8, 8, 8, 4, 4, 4, 1, 1, 1, 1, 1] [2024-11-13 14:07:16,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:07:17,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4313d79-c6ab-46e2-b027-b1c285e586a9/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:07:17,037 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:07:17,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:07:17,041 INFO L85 PathProgramCache]: Analyzing trace with hash 523726950, now seen corresponding path program 7 times [2024-11-13 14:07:17,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:07:17,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831992345] [2024-11-13 14:07:17,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:07:17,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms