./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/up.i --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_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/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_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/up.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/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_9e59ff5f-b386-4c76-95c1-f75244a66f3f/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 ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:58:29,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:58:29,431 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:58:29,440 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:58:29,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:58:29,483 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:58:29,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:58:29,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:58:29,484 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:58:29,484 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:58:29,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:58:29,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:58:29,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:58:29,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:58:29,488 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:58:29,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:58:29,488 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:58:29,488 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:58:29,489 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:58:29,489 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:58:29,489 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:58:29,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:58:29,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:58:29,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:58:29,489 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:58:29,489 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:58:29,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:58:29,490 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:58:29,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:58:29,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:58:29,490 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:58:29,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:58:29,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:58:29,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:58:29,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:58:29,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:58:29,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:58:29,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:58:29,492 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:58:29,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:58:29,492 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:58:29,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:58:29,492 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_9e59ff5f-b386-4c76-95c1-f75244a66f3f/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 -> ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f [2024-11-13 15:58:29,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:58:29,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:58:29,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:58:29,941 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:58:29,942 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:58:29,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/loop-invgen/up.i Unable to find full path for "g++" [2024-11-13 15:58:32,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:58:32,453 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:58:32,457 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/sv-benchmarks/c/loop-invgen/up.i [2024-11-13 15:58:32,469 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/data/e228c3e8c/05e78364498c4ff8ae0d330e33343bd6/FLAG28c892528 [2024-11-13 15:58:32,485 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/data/e228c3e8c/05e78364498c4ff8ae0d330e33343bd6 [2024-11-13 15:58:32,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:58:32,490 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:58:32,492 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:58:32,493 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:58:32,498 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:58:32,498 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:58:32" (1/1) ... [2024-11-13 15:58:32,499 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed6e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32, skipping insertion in model container [2024-11-13 15:58:32,499 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:58:32" (1/1) ... [2024-11-13 15:58:32,519 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:58:32,737 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_9e59ff5f-b386-4c76-95c1-f75244a66f3f/sv-benchmarks/c/loop-invgen/up.i[893,906] [2024-11-13 15:58:32,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:58:32,769 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:58:32,787 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_9e59ff5f-b386-4c76-95c1-f75244a66f3f/sv-benchmarks/c/loop-invgen/up.i[893,906] [2024-11-13 15:58:32,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:58:32,819 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:58:32,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32 WrapperNode [2024-11-13 15:58:32,821 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:58:32,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:58:32,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:58:32,825 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:58:32,833 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32" (1/1) ... [2024-11-13 15:58:32,841 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32" (1/1) ... [2024-11-13 15:58:32,861 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2024-11-13 15:58:32,862 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:58:32,864 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:58:32,864 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:58:32,864 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:58:32,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32" (1/1) ... [2024-11-13 15:58:32,875 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32" (1/1) ... [2024-11-13 15:58:32,876 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32" (1/1) ... [2024-11-13 15:58:32,890 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 15:58:32,891 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32" (1/1) ... [2024-11-13 15:58:32,891 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32" (1/1) ... [2024-11-13 15:58:32,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32" (1/1) ... [2024-11-13 15:58:32,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32" (1/1) ... [2024-11-13 15:58:32,902 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32" (1/1) ... [2024-11-13 15:58:32,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32" (1/1) ... [2024-11-13 15:58:32,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:58:32,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:58:32,910 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:58:32,910 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:58:32,915 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32" (1/1) ... [2024-11-13 15:58:32,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:58:32,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:32,965 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:58:32,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:58:33,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:58:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:58:33,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:58:33,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:58:33,104 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:58:33,107 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:58:33,251 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-13 15:58:33,251 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:58:33,266 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:58:33,267 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 15:58:33,267 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:58:33 BoogieIcfgContainer [2024-11-13 15:58:33,267 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:58:33,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:58:33,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:58:33,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:58:33,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:58:32" (1/3) ... [2024-11-13 15:58:33,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490f7641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:58:33, skipping insertion in model container [2024-11-13 15:58:33,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:58:32" (2/3) ... [2024-11-13 15:58:33,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@490f7641 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:58:33, skipping insertion in model container [2024-11-13 15:58:33,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:58:33" (3/3) ... [2024-11-13 15:58:33,285 INFO L112 eAbstractionObserver]: Analyzing ICFG up.i [2024-11-13 15:58:33,309 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:58:33,312 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG up.i that has 1 procedures, 12 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 15:58:33,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:58:33,410 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;@5c9c54cd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:58:33,410 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 15:58:33,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:33,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 15:58:33,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:33,422 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:33,423 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:33,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:33,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1807895823, now seen corresponding path program 1 times [2024-11-13 15:58:33,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:33,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095497461] [2024-11-13 15:58:33,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:33,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:33,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:33,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:33,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095497461] [2024-11-13 15:58:33,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095497461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:33,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:58:33,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:58:33,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901112251] [2024-11-13 15:58:33,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:33,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:58:33,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:33,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:58:33,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:58:33,862 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 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 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:33,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:33,935 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2024-11-13 15:58:33,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:58:33,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2024-11-13 15:58:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:33,947 INFO L225 Difference]: With dead ends: 24 [2024-11-13 15:58:33,948 INFO L226 Difference]: Without dead ends: 10 [2024-11-13 15:58:33,951 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:58:33,954 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:33,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:58:33,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-13 15:58:33,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-11-13 15:58:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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 15:58:33,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2024-11-13 15:58:33,987 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 7 [2024-11-13 15:58:33,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:33,987 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2024-11-13 15:58:33,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:33,988 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2024-11-13 15:58:33,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 15:58:33,988 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:33,988 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:33,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:58:33,989 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:33,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:33,992 INFO L85 PathProgramCache]: Analyzing trace with hash 261671595, now seen corresponding path program 1 times [2024-11-13 15:58:33,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:33,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433376331] [2024-11-13 15:58:33,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:33,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:34,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:34,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:34,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433376331] [2024-11-13 15:58:34,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433376331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:34,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303250595] [2024-11-13 15:58:34,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:34,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:34,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:34,258 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:34,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:58:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:34,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:58:34,344 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:34,446 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 15:58:34,447 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:58:34,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303250595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:58:34,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 15:58:34,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-13 15:58:34,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743732539] [2024-11-13 15:58:34,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:58:34,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:58:34,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:34,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:58:34,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:58:34,450 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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 15:58:34,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:34,498 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2024-11-13 15:58:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:58:34,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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 15:58:34,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:34,499 INFO L225 Difference]: With dead ends: 20 [2024-11-13 15:58:34,499 INFO L226 Difference]: Without dead ends: 18 [2024-11-13 15:58:34,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:58:34,500 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:34,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 18 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:58:34,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-13 15:58:34,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12. [2024-11-13 15:58:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:34,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2024-11-13 15:58:34,506 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2024-11-13 15:58:34,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:34,506 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2024-11-13 15:58:34,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 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 15:58:34,507 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2024-11-13 15:58:34,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 15:58:34,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:34,507 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:34,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:58:34,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-13 15:58:34,710 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:34,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:34,710 INFO L85 PathProgramCache]: Analyzing trace with hash 97662700, now seen corresponding path program 1 times [2024-11-13 15:58:34,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:34,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527131655] [2024-11-13 15:58:34,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:34,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:34,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:34,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:34,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527131655] [2024-11-13 15:58:34,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527131655] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:34,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533231492] [2024-11-13 15:58:34,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:34,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:34,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:34,888 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:34,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:58:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:34,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:58:34,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:35,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:35,106 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:35,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533231492] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:35,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:35,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 15:58:35,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606150636] [2024-11-13 15:58:35,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:35,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:58:35,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:35,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:58:35,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:58:35,235 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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 15:58:35,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:35,295 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2024-11-13 15:58:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:58:35,298 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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) Word has length 11 [2024-11-13 15:58:35,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:35,298 INFO L225 Difference]: With dead ends: 23 [2024-11-13 15:58:35,298 INFO L226 Difference]: Without dead ends: 13 [2024-11-13 15:58:35,299 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:58:35,300 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:35,302 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:35,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-13 15:58:35,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-13 15:58:35,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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 15:58:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-11-13 15:58:35,313 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 11 [2024-11-13 15:58:35,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:35,313 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-11-13 15:58:35,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 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 15:58:35,313 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-11-13 15:58:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 15:58:35,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:35,314 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:35,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 15:58:35,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-13 15:58:35,515 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:35,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:35,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1195866488, now seen corresponding path program 2 times [2024-11-13 15:58:35,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:35,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281020915] [2024-11-13 15:58:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:35,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:35,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:35,663 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:35,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:35,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281020915] [2024-11-13 15:58:35,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281020915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:35,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188704002] [2024-11-13 15:58:35,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:58:35,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:35,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:35,667 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:35,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:58:35,747 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:58:35,747 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:35,750 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:58:35,752 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:35,827 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:35,827 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:35,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188704002] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:35,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:35,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2024-11-13 15:58:35,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287798634] [2024-11-13 15:58:35,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:35,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:58:35,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:58:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:58:35,918 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:35,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:35,988 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2024-11-13 15:58:35,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:58:35,989 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 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 12 [2024-11-13 15:58:35,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:35,989 INFO L225 Difference]: With dead ends: 24 [2024-11-13 15:58:35,989 INFO L226 Difference]: Without dead ends: 22 [2024-11-13 15:58:35,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:58:35,991 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:35,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:58:35,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-13 15:58:35,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2024-11-13 15:58:35,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 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 15:58:35,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2024-11-13 15:58:35,996 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2024-11-13 15:58:35,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:35,996 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2024-11-13 15:58:35,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:35,996 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2024-11-13 15:58:35,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 15:58:35,997 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:35,997 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:36,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 15:58:36,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:36,201 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:36,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:36,202 INFO L85 PathProgramCache]: Analyzing trace with hash 699994607, now seen corresponding path program 3 times [2024-11-13 15:58:36,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:36,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250906250] [2024-11-13 15:58:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:36,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:36,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:36,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250906250] [2024-11-13 15:58:36,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250906250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:36,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871363262] [2024-11-13 15:58:36,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:58:36,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:36,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:36,439 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:36,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:58:36,501 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 15:58:36,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:36,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:58:36,503 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:36,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:36,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871363262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:36,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:36,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2024-11-13 15:58:36,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818544934] [2024-11-13 15:58:36,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:36,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:58:36,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:36,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:58:36,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:58:36,808 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:36,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:36,871 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2024-11-13 15:58:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:58:36,876 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 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 15 [2024-11-13 15:58:36,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:36,876 INFO L225 Difference]: With dead ends: 30 [2024-11-13 15:58:36,876 INFO L226 Difference]: Without dead ends: 17 [2024-11-13 15:58:36,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:58:36,878 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:36,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:58:36,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-13 15:58:36,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-13 15:58:36,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:36,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2024-11-13 15:58:36,885 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2024-11-13 15:58:36,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:36,885 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2024-11-13 15:58:36,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:36,886 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2024-11-13 15:58:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 15:58:36,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:36,886 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:36,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 15:58:37,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:37,087 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:37,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1534473099, now seen corresponding path program 4 times [2024-11-13 15:58:37,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:37,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022905947] [2024-11-13 15:58:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:37,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:37,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:37,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022905947] [2024-11-13 15:58:37,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022905947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:37,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704064360] [2024-11-13 15:58:37,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:58:37,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:37,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:37,257 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:37,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:58:37,319 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:58:37,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:37,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:58:37,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:37,391 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:37,391 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:37,475 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:37,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704064360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:37,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:37,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2024-11-13 15:58:37,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70042253] [2024-11-13 15:58:37,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:37,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:58:37,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:37,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:58:37,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:58:37,477 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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 15:58:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:37,568 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-11-13 15:58:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:58:37,568 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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 16 [2024-11-13 15:58:37,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:37,569 INFO L225 Difference]: With dead ends: 28 [2024-11-13 15:58:37,569 INFO L226 Difference]: Without dead ends: 26 [2024-11-13 15:58:37,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:58:37,571 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:37,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:37,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-13 15:58:37,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2024-11-13 15:58:37,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:37,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-13 15:58:37,576 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 16 [2024-11-13 15:58:37,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:37,576 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-13 15:58:37,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 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 15:58:37,577 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-13 15:58:37,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 15:58:37,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:37,577 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:37,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 15:58:37,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:37,781 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:37,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:37,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2138988020, now seen corresponding path program 5 times [2024-11-13 15:58:37,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:37,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536440353] [2024-11-13 15:58:37,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:37,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:38,034 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:38,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:38,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536440353] [2024-11-13 15:58:38,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536440353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:38,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562467626] [2024-11-13 15:58:38,035 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:58:38,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:38,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:38,037 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:38,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:58:38,103 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 15:58:38,103 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:38,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:58:38,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:38,266 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:38,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562467626] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:38,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:38,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2024-11-13 15:58:38,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258618676] [2024-11-13 15:58:38,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:38,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:58:38,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:38,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:58:38,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:58:38,390 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:38,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:38,464 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2024-11-13 15:58:38,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:58:38,465 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 19 [2024-11-13 15:58:38,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:38,466 INFO L225 Difference]: With dead ends: 37 [2024-11-13 15:58:38,466 INFO L226 Difference]: Without dead ends: 21 [2024-11-13 15:58:38,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:58:38,467 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:38,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:38,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-13 15:58:38,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-13 15:58:38,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 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 15:58:38,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-11-13 15:58:38,472 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2024-11-13 15:58:38,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:38,472 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-11-13 15:58:38,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:38,472 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-11-13 15:58:38,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 15:58:38,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:38,473 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:38,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 15:58:38,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:38,677 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:38,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:38,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1700566440, now seen corresponding path program 6 times [2024-11-13 15:58:38,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:38,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544249400] [2024-11-13 15:58:38,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:38,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:38,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:38,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544249400] [2024-11-13 15:58:38,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544249400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:38,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949270751] [2024-11-13 15:58:38,833 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:58:38,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:38,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:38,836 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:38,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:58:38,904 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-11-13 15:58:38,904 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:38,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:58:38,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:38,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:39,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949270751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:39,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:39,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2024-11-13 15:58:39,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131117245] [2024-11-13 15:58:39,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:39,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:58:39,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:39,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:58:39,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:58:39,103 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 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 15:58:39,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:39,214 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2024-11-13 15:58:39,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:58:39,215 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 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) Word has length 20 [2024-11-13 15:58:39,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:39,217 INFO L225 Difference]: With dead ends: 32 [2024-11-13 15:58:39,217 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 15:58:39,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 33 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:58:39,219 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:39,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:39,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 15:58:39,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 24. [2024-11-13 15:58:39,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 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 15:58:39,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2024-11-13 15:58:39,230 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 20 [2024-11-13 15:58:39,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:39,230 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2024-11-13 15:58:39,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 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 15:58:39,230 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2024-11-13 15:58:39,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 15:58:39,231 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:39,231 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:39,257 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:58:39,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:39,432 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:39,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:39,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1854591281, now seen corresponding path program 7 times [2024-11-13 15:58:39,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:39,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998821340] [2024-11-13 15:58:39,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:39,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:39,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:39,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998821340] [2024-11-13 15:58:39,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998821340] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:39,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619620069] [2024-11-13 15:58:39,766 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:58:39,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:39,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:39,769 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:39,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:58:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:39,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:58:39,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:40,059 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:40,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619620069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:40,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:40,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2024-11-13 15:58:40,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579375582] [2024-11-13 15:58:40,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:40,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:58:40,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:40,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:58:40,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:58:40,225 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:40,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:40,306 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2024-11-13 15:58:40,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:58:40,307 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-13 15:58:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:40,307 INFO L225 Difference]: With dead ends: 44 [2024-11-13 15:58:40,307 INFO L226 Difference]: Without dead ends: 25 [2024-11-13 15:58:40,308 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 9 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:58:40,309 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:40,309 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-13 15:58:40,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-13 15:58:40,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 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 15:58:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2024-11-13 15:58:40,313 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 23 [2024-11-13 15:58:40,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:40,314 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2024-11-13 15:58:40,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.15) internal successors, (43), 20 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:40,314 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2024-11-13 15:58:40,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-13 15:58:40,314 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:40,314 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:40,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 15:58:40,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 15:58:40,518 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:40,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:40,519 INFO L85 PathProgramCache]: Analyzing trace with hash -499846037, now seen corresponding path program 8 times [2024-11-13 15:58:40,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:40,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943177893] [2024-11-13 15:58:40,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:40,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:40,714 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:40,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:40,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943177893] [2024-11-13 15:58:40,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943177893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:40,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076537001] [2024-11-13 15:58:40,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:58:40,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:40,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:40,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:40,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:58:40,782 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:58:40,782 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:40,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 15:58:40,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:40,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:40,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076537001] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:40,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:40,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2024-11-13 15:58:40,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43669353] [2024-11-13 15:58:40,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:40,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:58:40,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:40,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:58:40,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:58:40,979 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:41,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:41,081 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2024-11-13 15:58:41,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:58:41,082 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 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 15:58:41,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:41,082 INFO L225 Difference]: With dead ends: 36 [2024-11-13 15:58:41,082 INFO L226 Difference]: Without dead ends: 34 [2024-11-13 15:58:41,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 39 SyntacticMatches, 11 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:58:41,083 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:41,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:41,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-13 15:58:41,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2024-11-13 15:58:41,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:41,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-11-13 15:58:41,094 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2024-11-13 15:58:41,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:41,094 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-11-13 15:58:41,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:41,094 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-11-13 15:58:41,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 15:58:41,095 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:41,095 INFO L215 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:41,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 15:58:41,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 15:58:41,302 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:41,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:41,302 INFO L85 PathProgramCache]: Analyzing trace with hash -256854740, now seen corresponding path program 9 times [2024-11-13 15:58:41,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:41,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184325988] [2024-11-13 15:58:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:41,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:41,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:41,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184325988] [2024-11-13 15:58:41,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184325988] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:41,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576733456] [2024-11-13 15:58:41,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:58:41,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:41,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:41,602 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:41,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:58:41,681 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-13 15:58:41,681 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:41,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:58:41,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:41,940 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:41,940 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:42,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576733456] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:42,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:42,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2024-11-13 15:58:42,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755844466] [2024-11-13 15:58:42,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:42,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 15:58:42,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:42,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 15:58:42,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:58:42,122 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:42,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:42,237 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2024-11-13 15:58:42,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:58:42,238 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 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 27 [2024-11-13 15:58:42,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:42,238 INFO L225 Difference]: With dead ends: 51 [2024-11-13 15:58:42,238 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 15:58:42,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:58:42,240 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:42,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 15:58:42,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-13 15:58:42,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 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 15:58:42,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2024-11-13 15:58:42,245 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 27 [2024-11-13 15:58:42,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:42,245 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2024-11-13 15:58:42,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:42,245 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2024-11-13 15:58:42,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 15:58:42,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:42,246 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:42,271 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:58:42,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 15:58:42,447 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:42,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:42,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1432597304, now seen corresponding path program 10 times [2024-11-13 15:58:42,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:42,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438756769] [2024-11-13 15:58:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:42,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 15 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:42,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:42,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438756769] [2024-11-13 15:58:42,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438756769] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:42,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572435959] [2024-11-13 15:58:42,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:58:42,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:42,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:42,687 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:42,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:58:42,767 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:58:42,767 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:42,768 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 15:58:42,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:42,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:43,010 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:43,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572435959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:43,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:43,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2024-11-13 15:58:43,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076837892] [2024-11-13 15:58:43,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:43,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 15:58:43,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:43,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 15:58:43,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-13 15:58:43,012 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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 15:58:43,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:43,154 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2024-11-13 15:58:43,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 15:58:43,158 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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) Word has length 28 [2024-11-13 15:58:43,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:43,159 INFO L225 Difference]: With dead ends: 40 [2024-11-13 15:58:43,159 INFO L226 Difference]: Without dead ends: 38 [2024-11-13 15:58:43,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 47 SyntacticMatches, 12 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:58:43,160 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:43,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:43,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-13 15:58:43,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2024-11-13 15:58:43,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 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 15:58:43,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2024-11-13 15:58:43,169 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 28 [2024-11-13 15:58:43,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:43,170 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2024-11-13 15:58:43,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 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 15:58:43,170 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2024-11-13 15:58:43,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 15:58:43,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:43,173 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:43,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 15:58:43,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 15:58:43,373 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:43,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:43,374 INFO L85 PathProgramCache]: Analyzing trace with hash 588555183, now seen corresponding path program 11 times [2024-11-13 15:58:43,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:43,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117788005] [2024-11-13 15:58:43,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:43,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:43,705 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 41 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:43,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:43,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117788005] [2024-11-13 15:58:43,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117788005] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:43,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958588815] [2024-11-13 15:58:43,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:58:43,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:43,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:43,708 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:43,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:58:43,792 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-13 15:58:43,792 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:43,794 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:58:43,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:44,127 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:44,367 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:44,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958588815] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:44,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:44,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 26 [2024-11-13 15:58:44,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73796635] [2024-11-13 15:58:44,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:44,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:58:44,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:44,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:58:44,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:58:44,370 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 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 15:58:44,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:44,491 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2024-11-13 15:58:44,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:58:44,491 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 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 31 [2024-11-13 15:58:44,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:44,492 INFO L225 Difference]: With dead ends: 58 [2024-11-13 15:58:44,492 INFO L226 Difference]: Without dead ends: 33 [2024-11-13 15:58:44,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 40 SyntacticMatches, 13 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:58:44,493 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:44,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:44,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-13 15:58:44,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-13 15:58:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2024-11-13 15:58:44,504 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 31 [2024-11-13 15:58:44,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:44,504 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2024-11-13 15:58:44,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.1923076923076925) internal successors, (57), 26 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 15:58:44,504 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2024-11-13 15:58:44,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 15:58:44,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:44,506 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:44,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:58:44,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 15:58:44,707 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:44,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:44,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1207110987, now seen corresponding path program 12 times [2024-11-13 15:58:44,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:44,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564689264] [2024-11-13 15:58:44,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:44,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:44,963 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:44,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:44,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564689264] [2024-11-13 15:58:44,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564689264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:44,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237544475] [2024-11-13 15:58:44,964 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:58:44,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:44,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:44,966 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:44,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:58:45,070 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-13 15:58:45,071 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:45,072 INFO L255 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 15:58:45,077 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:45,175 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:45,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:45,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237544475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:45,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:45,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-13 15:58:45,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198890056] [2024-11-13 15:58:45,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:45,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 15:58:45,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:45,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 15:58:45,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:58:45,359 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:45,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:45,525 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2024-11-13 15:58:45,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 15:58:45,527 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 32 [2024-11-13 15:58:45,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:45,527 INFO L225 Difference]: With dead ends: 44 [2024-11-13 15:58:45,528 INFO L226 Difference]: Without dead ends: 42 [2024-11-13 15:58:45,528 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 14 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:58:45,529 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:45,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:45,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-13 15:58:45,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2024-11-13 15:58:45,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:45,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2024-11-13 15:58:45,539 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 32 [2024-11-13 15:58:45,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:45,539 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2024-11-13 15:58:45,540 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:45,540 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2024-11-13 15:58:45,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 15:58:45,541 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:45,541 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:45,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 15:58:45,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 15:58:45,741 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:45,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:45,742 INFO L85 PathProgramCache]: Analyzing trace with hash -712937396, now seen corresponding path program 13 times [2024-11-13 15:58:45,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:45,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078885388] [2024-11-13 15:58:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:45,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:46,146 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:46,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:46,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078885388] [2024-11-13 15:58:46,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078885388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:46,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033722209] [2024-11-13 15:58:46,147 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:58:46,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:46,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:46,150 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:46,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:58:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:46,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 15:58:46,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:46,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:46,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033722209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:46,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:46,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2024-11-13 15:58:46,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208237057] [2024-11-13 15:58:46,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:46,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 15:58:46,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:46,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 15:58:46,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:58:46,937 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:47,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:47,039 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2024-11-13 15:58:47,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 15:58:47,040 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-13 15:58:47,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:47,041 INFO L225 Difference]: With dead ends: 65 [2024-11-13 15:58:47,041 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 15:58:47,041 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 45 SyntacticMatches, 15 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:58:47,042 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:47,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:47,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 15:58:47,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-11-13 15:58:47,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:47,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2024-11-13 15:58:47,048 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 35 [2024-11-13 15:58:47,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:47,048 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2024-11-13 15:58:47,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 2.206896551724138) internal successors, (64), 29 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:47,048 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2024-11-13 15:58:47,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 15:58:47,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:47,049 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:47,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:58:47,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 15:58:47,254 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:47,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:47,254 INFO L85 PathProgramCache]: Analyzing trace with hash 731491304, now seen corresponding path program 14 times [2024-11-13 15:58:47,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:47,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311295496] [2024-11-13 15:58:47,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:47,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 28 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:47,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:47,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311295496] [2024-11-13 15:58:47,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311295496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:47,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105889791] [2024-11-13 15:58:47,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:58:47,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:47,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:47,545 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:47,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:58:47,636 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:58:47,636 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:47,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-13 15:58:47,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:47,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:47,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105889791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:47,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:47,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2024-11-13 15:58:47,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606295052] [2024-11-13 15:58:47,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:47,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 15:58:47,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:47,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 15:58:47,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-11-13 15:58:47,967 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:48,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:48,147 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2024-11-13 15:58:48,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 15:58:48,148 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 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 36 [2024-11-13 15:58:48,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:48,149 INFO L225 Difference]: With dead ends: 48 [2024-11-13 15:58:48,149 INFO L226 Difference]: Without dead ends: 46 [2024-11-13 15:58:48,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 60 SyntacticMatches, 17 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:58:48,150 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:48,150 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 22 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:48,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-13 15:58:48,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2024-11-13 15:58:48,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2024-11-13 15:58:48,157 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2024-11-13 15:58:48,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:48,158 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2024-11-13 15:58:48,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:48,161 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2024-11-13 15:58:48,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 15:58:48,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:48,162 INFO L215 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:48,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-13 15:58:48,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:58:48,363 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:48,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:48,364 INFO L85 PathProgramCache]: Analyzing trace with hash -801804145, now seen corresponding path program 15 times [2024-11-13 15:58:48,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:48,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471448435] [2024-11-13 15:58:48,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:48,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 78 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:48,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:48,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471448435] [2024-11-13 15:58:48,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471448435] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:48,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781296296] [2024-11-13 15:58:48,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:58:48,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:48,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:48,785 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:48,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:58:48,884 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-13 15:58:48,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:48,888 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 15:58:48,890 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:49,315 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:49,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781296296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:49,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:49,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2024-11-13 15:58:49,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104003341] [2024-11-13 15:58:49,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:49,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 15:58:49,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:49,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 15:58:49,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-11-13 15:58:49,616 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:49,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:49,757 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2024-11-13 15:58:49,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 15:58:49,758 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 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 39 [2024-11-13 15:58:49,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:49,758 INFO L225 Difference]: With dead ends: 72 [2024-11-13 15:58:49,758 INFO L226 Difference]: Without dead ends: 41 [2024-11-13 15:58:49,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 50 SyntacticMatches, 17 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2024-11-13 15:58:49,760 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:49,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-13 15:58:49,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-13 15:58:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.05) internal successors, (42), 40 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 15:58:49,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2024-11-13 15:58:49,766 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 39 [2024-11-13 15:58:49,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:49,766 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2024-11-13 15:58:49,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:49,766 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2024-11-13 15:58:49,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 15:58:49,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:49,767 INFO L215 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:49,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 15:58:49,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 15:58:49,972 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:49,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1571914197, now seen corresponding path program 16 times [2024-11-13 15:58:49,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:49,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715904125] [2024-11-13 15:58:49,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:49,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 36 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:50,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:50,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715904125] [2024-11-13 15:58:50,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715904125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:50,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362792436] [2024-11-13 15:58:50,291 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:58:50,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:50,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:50,293 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:50,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:58:50,401 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:58:50,401 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:50,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 15:58:50,409 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:50,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:50,757 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:50,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362792436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:50,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:50,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2024-11-13 15:58:50,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735167757] [2024-11-13 15:58:50,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:50,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 15:58:50,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:50,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 15:58:50,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:58:50,759 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:50,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:50,943 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2024-11-13 15:58:50,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 15:58:50,944 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 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 40 [2024-11-13 15:58:50,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:50,945 INFO L225 Difference]: With dead ends: 52 [2024-11-13 15:58:50,945 INFO L226 Difference]: Without dead ends: 50 [2024-11-13 15:58:50,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 68 SyntacticMatches, 18 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:58:50,946 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:50,946 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-13 15:58:50,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2024-11-13 15:58:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:50,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2024-11-13 15:58:50,957 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 40 [2024-11-13 15:58:50,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:50,957 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2024-11-13 15:58:50,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2024-11-13 15:58:50,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 15:58:50,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:50,958 INFO L215 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:50,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 15:58:51,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 15:58:51,159 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:51,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash -862596244, now seen corresponding path program 17 times [2024-11-13 15:58:51,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:51,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931341509] [2024-11-13 15:58:51,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:51,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:51,678 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:51,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:51,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931341509] [2024-11-13 15:58:51,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931341509] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:51,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403706975] [2024-11-13 15:58:51,679 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:58:51,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:51,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:51,682 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:51,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:58:51,790 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2024-11-13 15:58:51,791 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:51,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 15:58:51,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:52,299 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:52,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403706975] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:52,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:52,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 35 [2024-11-13 15:58:52,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91618719] [2024-11-13 15:58:52,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:52,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 15:58:52,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:52,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 15:58:52,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 15:58:52,622 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:52,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:52,772 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2024-11-13 15:58:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 15:58:52,772 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2024-11-13 15:58:52,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:52,773 INFO L225 Difference]: With dead ends: 79 [2024-11-13 15:58:52,773 INFO L226 Difference]: Without dead ends: 45 [2024-11-13 15:58:52,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 55 SyntacticMatches, 19 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=280, Invalid=910, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 15:58:52,775 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:52,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:52,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-13 15:58:52,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-13 15:58:52,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.0454545454545454) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2024-11-13 15:58:52,781 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 43 [2024-11-13 15:58:52,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:52,782 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2024-11-13 15:58:52,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2285714285714286) internal successors, (78), 35 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:52,782 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2024-11-13 15:58:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 15:58:52,783 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:52,783 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:52,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 15:58:52,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:52,988 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:52,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:52,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1443450104, now seen corresponding path program 18 times [2024-11-13 15:58:52,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:52,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473351565] [2024-11-13 15:58:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:52,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 45 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:53,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:53,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473351565] [2024-11-13 15:58:53,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473351565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:53,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280675890] [2024-11-13 15:58:53,321 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:58:53,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:53,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:53,323 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:53,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:58:53,431 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2024-11-13 15:58:53,431 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:53,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 15:58:53,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:53,544 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:53,801 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:53,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280675890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:53,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:53,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 16 [2024-11-13 15:58:53,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653779384] [2024-11-13 15:58:53,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:53,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 15:58:53,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:53,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 15:58:53,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2024-11-13 15:58:53,803 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:54,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:54,021 INFO L93 Difference]: Finished difference Result 56 states and 57 transitions. [2024-11-13 15:58:54,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 15:58:54,022 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 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 44 [2024-11-13 15:58:54,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:54,023 INFO L225 Difference]: With dead ends: 56 [2024-11-13 15:58:54,023 INFO L226 Difference]: Without dead ends: 54 [2024-11-13 15:58:54,023 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 75 SyntacticMatches, 20 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:58:54,024 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:54,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:54,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-13 15:58:54,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2024-11-13 15:58:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:54,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2024-11-13 15:58:54,032 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 44 [2024-11-13 15:58:54,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:54,032 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2024-11-13 15:58:54,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 16 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:54,032 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2024-11-13 15:58:54,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 15:58:54,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:54,033 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:54,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 15:58:54,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:54,234 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:54,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:54,234 INFO L85 PathProgramCache]: Analyzing trace with hash -604662417, now seen corresponding path program 19 times [2024-11-13 15:58:54,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:54,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916352997] [2024-11-13 15:58:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:54,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:54,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:54,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916352997] [2024-11-13 15:58:54,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916352997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:54,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075814402] [2024-11-13 15:58:54,800 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:58:54,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:54,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:54,803 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:54,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:58:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:54,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 15:58:54,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:55,451 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:55,831 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:55,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075814402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:55,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:55,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2024-11-13 15:58:55,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931929323] [2024-11-13 15:58:55,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:55,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 15:58:55,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:55,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 15:58:55,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 15:58:55,834 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:56,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:56,000 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2024-11-13 15:58:56,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 15:58:56,001 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-13 15:58:56,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:56,002 INFO L225 Difference]: With dead ends: 86 [2024-11-13 15:58:56,002 INFO L226 Difference]: Without dead ends: 49 [2024-11-13 15:58:56,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 60 SyntacticMatches, 21 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=329, Invalid=1077, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 15:58:56,003 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:56,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:56,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-13 15:58:56,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-13 15:58:56,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:56,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2024-11-13 15:58:56,019 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 47 [2024-11-13 15:58:56,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:56,020 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2024-11-13 15:58:56,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.236842105263158) internal successors, (85), 38 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2024-11-13 15:58:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 15:58:56,021 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:56,021 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:56,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 15:58:56,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:56,222 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:56,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:56,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1483032331, now seen corresponding path program 20 times [2024-11-13 15:58:56,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:56,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063776965] [2024-11-13 15:58:56,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:56,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 55 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:56,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:56,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063776965] [2024-11-13 15:58:56,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063776965] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:56,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441198604] [2024-11-13 15:58:56,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:58:56,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:56,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:56,637 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:56,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:58:56,744 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:58:56,745 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:56,746 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 15:58:56,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:56,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:57,176 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:57,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441198604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:57,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:57,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2024-11-13 15:58:57,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72011956] [2024-11-13 15:58:57,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:57,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:58:57,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:57,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:58:57,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:58:57,178 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:57,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:57,409 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2024-11-13 15:58:57,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 15:58:57,411 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 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 48 [2024-11-13 15:58:57,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:57,412 INFO L225 Difference]: With dead ends: 60 [2024-11-13 15:58:57,415 INFO L226 Difference]: Without dead ends: 58 [2024-11-13 15:58:57,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 81 SyntacticMatches, 23 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2024-11-13 15:58:57,418 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:57,418 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 33 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:58:57,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-13 15:58:57,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2024-11-13 15:58:57,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:57,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2024-11-13 15:58:57,425 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 48 [2024-11-13 15:58:57,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:57,425 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2024-11-13 15:58:57,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:57,426 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2024-11-13 15:58:57,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 15:58:57,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:57,426 INFO L215 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:57,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-13 15:58:57,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:57,630 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:57,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:57,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1307582836, now seen corresponding path program 21 times [2024-11-13 15:58:57,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:57,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216805871] [2024-11-13 15:58:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:57,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:58,237 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 156 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:58,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:58:58,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216805871] [2024-11-13 15:58:58,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216805871] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:58:58,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991308952] [2024-11-13 15:58:58,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:58:58,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:58,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:58,240 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:58,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 15:58:58,353 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2024-11-13 15:58:58,353 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:58:58,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 15:58:58,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:58,913 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:59,369 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:59,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991308952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:58:59,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:58:59,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 41 [2024-11-13 15:58:59,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994156630] [2024-11-13 15:58:59,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:58:59,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 15:58:59,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:58:59,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 15:58:59,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 15:58:59,371 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 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 15:58:59,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:59,570 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2024-11-13 15:58:59,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 15:58:59,571 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 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 51 [2024-11-13 15:58:59,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:59,572 INFO L225 Difference]: With dead ends: 93 [2024-11-13 15:58:59,572 INFO L226 Difference]: Without dead ends: 53 [2024-11-13 15:58:59,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 65 SyntacticMatches, 23 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1001 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=382, Invalid=1258, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 15:58:59,573 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:59,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:58:59,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-13 15:58:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-13 15:58:59,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:59,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2024-11-13 15:58:59,583 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 51 [2024-11-13 15:58:59,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:59,583 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2024-11-13 15:58:59,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 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 15:58:59,585 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2024-11-13 15:58:59,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 15:58:59,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:59,586 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2024-11-13 15:58:59,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-13 15:58:59,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:59,787 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:58:59,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:59,787 INFO L85 PathProgramCache]: Analyzing trace with hash 634741288, now seen corresponding path program 22 times [2024-11-13 15:58:59,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:58:59,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257408802] [2024-11-13 15:58:59,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:59,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:58:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 66 proven. 199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:00,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:00,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257408802] [2024-11-13 15:59:00,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257408802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:00,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143344062] [2024-11-13 15:59:00,157 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:59:00,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:00,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:00,159 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:00,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 15:59:00,262 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:59:00,263 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:00,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:59:00,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:00,385 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:00,650 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:00,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143344062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:00,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:00,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 18 [2024-11-13 15:59:00,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968889199] [2024-11-13 15:59:00,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:00,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 15:59:00,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:00,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 15:59:00,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2024-11-13 15:59:00,653 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 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 15:59:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:00,883 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2024-11-13 15:59:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 15:59:00,884 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 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 52 [2024-11-13 15:59:00,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:00,885 INFO L225 Difference]: With dead ends: 64 [2024-11-13 15:59:00,885 INFO L226 Difference]: Without dead ends: 62 [2024-11-13 15:59:00,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 89 SyntacticMatches, 24 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2024-11-13 15:59:00,886 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:00,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 37 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:59:00,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-13 15:59:00,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2024-11-13 15:59:00,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 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 15:59:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2024-11-13 15:59:00,893 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 52 [2024-11-13 15:59:00,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:00,893 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2024-11-13 15:59:00,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 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 15:59:00,894 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2024-11-13 15:59:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 15:59:00,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:00,894 INFO L215 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:00,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-13 15:59:01,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:01,098 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:01,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:01,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1158475185, now seen corresponding path program 23 times [2024-11-13 15:59:01,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:01,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475817776] [2024-11-13 15:59:01,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:01,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 188 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:01,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:01,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475817776] [2024-11-13 15:59:01,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475817776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:01,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526241326] [2024-11-13 15:59:01,759 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:59:01,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:01,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:01,762 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:01,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 15:59:01,878 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2024-11-13 15:59:01,878 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:01,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 15:59:01,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:02,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:03,102 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:03,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526241326] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:03,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:03,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2024-11-13 15:59:03,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465270584] [2024-11-13 15:59:03,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:03,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-13 15:59:03,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:03,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-13 15:59:03,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 15:59:03,106 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:03,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:03,323 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2024-11-13 15:59:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 15:59:03,323 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-13 15:59:03,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:03,324 INFO L225 Difference]: With dead ends: 100 [2024-11-13 15:59:03,324 INFO L226 Difference]: Without dead ends: 57 [2024-11-13 15:59:03,325 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 70 SyntacticMatches, 25 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=439, Invalid=1453, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 15:59:03,326 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:03,326 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 154 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:59:03,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-13 15:59:03,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2024-11-13 15:59:03,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.0357142857142858) internal successors, (58), 56 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:03,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2024-11-13 15:59:03,332 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 55 [2024-11-13 15:59:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:03,333 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2024-11-13 15:59:03,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.25) internal successors, (99), 44 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:03,333 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2024-11-13 15:59:03,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 15:59:03,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:03,334 INFO L215 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:03,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 15:59:03,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-13 15:59:03,539 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:03,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:03,539 INFO L85 PathProgramCache]: Analyzing trace with hash 47540203, now seen corresponding path program 24 times [2024-11-13 15:59:03,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:03,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912347816] [2024-11-13 15:59:03,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:03,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:03,979 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 78 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:03,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:03,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912347816] [2024-11-13 15:59:03,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912347816] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:03,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771448379] [2024-11-13 15:59:03,980 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:59:03,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:03,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:03,983 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:03,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 15:59:04,128 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2024-11-13 15:59:04,128 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:04,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 15:59:04,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:04,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:04,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771448379] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:04,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:04,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2024-11-13 15:59:04,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32487229] [2024-11-13 15:59:04,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:04,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:59:04,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:04,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:59:04,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2024-11-13 15:59:04,620 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:04,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:04,914 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2024-11-13 15:59:04,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-13 15:59:04,914 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-13 15:59:04,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:04,915 INFO L225 Difference]: With dead ends: 68 [2024-11-13 15:59:04,915 INFO L226 Difference]: Without dead ends: 66 [2024-11-13 15:59:04,916 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 96 SyntacticMatches, 26 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2024-11-13 15:59:04,917 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:04,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:59:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-13 15:59:04,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 60. [2024-11-13 15:59:04,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:04,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2024-11-13 15:59:04,923 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 56 [2024-11-13 15:59:04,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:04,923 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2024-11-13 15:59:04,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1578947368421053) internal successors, (60), 19 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:04,923 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2024-11-13 15:59:04,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-13 15:59:04,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:04,924 INFO L215 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:04,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 15:59:05,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:05,124 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:05,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:05,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1064201812, now seen corresponding path program 25 times [2024-11-13 15:59:05,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:05,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642231842] [2024-11-13 15:59:05,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:05,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:05,956 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 223 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:05,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:05,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642231842] [2024-11-13 15:59:05,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642231842] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:05,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235942963] [2024-11-13 15:59:05,957 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:59:05,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:05,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:05,960 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:05,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 15:59:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:06,083 INFO L255 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 15:59:06,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:06,698 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:06,698 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:07,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235942963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:07,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:07,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2024-11-13 15:59:07,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622764586] [2024-11-13 15:59:07,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:07,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 15:59:07,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:07,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 15:59:07,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 15:59:07,184 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 47 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:07,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:07,458 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2024-11-13 15:59:07,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 15:59:07,459 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 states have internal predecessors, (106), 0 states have call successors, (0), 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 59 [2024-11-13 15:59:07,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:07,460 INFO L225 Difference]: With dead ends: 107 [2024-11-13 15:59:07,460 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 15:59:07,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 75 SyntacticMatches, 27 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=500, Invalid=1662, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 15:59:07,461 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:07,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 199 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:59:07,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 15:59:07,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-13 15:59:07,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 60 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:07,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2024-11-13 15:59:07,468 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 59 [2024-11-13 15:59:07,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:07,468 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2024-11-13 15:59:07,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.25531914893617) internal successors, (106), 47 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:07,469 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2024-11-13 15:59:07,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 15:59:07,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:07,470 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:07,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 15:59:07,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:07,670 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:07,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:07,671 INFO L85 PathProgramCache]: Analyzing trace with hash -36193976, now seen corresponding path program 26 times [2024-11-13 15:59:07,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:07,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900410644] [2024-11-13 15:59:07,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:07,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:08,143 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 91 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:08,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:08,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900410644] [2024-11-13 15:59:08,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900410644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:08,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545926633] [2024-11-13 15:59:08,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:59:08,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:08,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:08,146 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:08,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 15:59:08,269 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:59:08,269 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:08,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 15:59:08,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 105 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:08,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 105 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:08,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545926633] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:08,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:08,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 20 [2024-11-13 15:59:08,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813091609] [2024-11-13 15:59:08,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:08,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:59:08,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:08,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:59:08,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2024-11-13 15:59:08,817 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:09,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:09,108 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2024-11-13 15:59:09,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 15:59:09,109 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-13 15:59:09,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:09,109 INFO L225 Difference]: With dead ends: 72 [2024-11-13 15:59:09,110 INFO L226 Difference]: Without dead ends: 70 [2024-11-13 15:59:09,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 102 SyntacticMatches, 29 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=410, Invalid=712, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 15:59:09,111 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:09,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:59:09,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-13 15:59:09,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2024-11-13 15:59:09,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:09,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2024-11-13 15:59:09,116 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 60 [2024-11-13 15:59:09,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:09,116 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2024-11-13 15:59:09,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.2) internal successors, (64), 20 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:09,117 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2024-11-13 15:59:09,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 15:59:09,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:09,117 INFO L215 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:09,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 15:59:09,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 15:59:09,318 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:09,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:09,318 INFO L85 PathProgramCache]: Analyzing trace with hash -213129425, now seen corresponding path program 27 times [2024-11-13 15:59:09,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:09,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122688202] [2024-11-13 15:59:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:09,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 261 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:10,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:10,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122688202] [2024-11-13 15:59:10,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122688202] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:10,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103564102] [2024-11-13 15:59:10,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:59:10,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:10,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:10,087 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:10,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 15:59:10,224 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-11-13 15:59:10,224 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:10,226 INFO L255 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 15:59:10,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:10,932 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:11,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103564102] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:11,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:11,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2024-11-13 15:59:11,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243798385] [2024-11-13 15:59:11,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:11,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 15:59:11,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:11,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 15:59:11,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=1885, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 15:59:11,457 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:11,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:11,707 INFO L93 Difference]: Finished difference Result 114 states and 116 transitions. [2024-11-13 15:59:11,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 15:59:11,708 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-13 15:59:11,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:11,709 INFO L225 Difference]: With dead ends: 114 [2024-11-13 15:59:11,709 INFO L226 Difference]: Without dead ends: 65 [2024-11-13 15:59:11,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 80 SyntacticMatches, 29 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=565, Invalid=1885, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 15:59:11,710 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:11,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 165 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:59:11,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-13 15:59:11,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-13 15:59:11,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.03125) internal successors, (66), 64 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:11,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2024-11-13 15:59:11,717 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 63 [2024-11-13 15:59:11,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:11,717 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2024-11-13 15:59:11,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:11,718 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2024-11-13 15:59:11,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-13 15:59:11,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:11,719 INFO L215 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:11,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 15:59:11,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 15:59:11,920 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:11,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1270669515, now seen corresponding path program 28 times [2024-11-13 15:59:11,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:11,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142660726] [2024-11-13 15:59:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:11,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:11,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 105 proven. 316 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:12,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:12,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142660726] [2024-11-13 15:59:12,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142660726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:12,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572868711] [2024-11-13 15:59:12,445 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:59:12,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:12,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:12,448 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:12,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 15:59:12,577 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:59:12,577 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:12,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 15:59:12,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:12,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:13,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572868711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:13,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:13,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 21 [2024-11-13 15:59:13,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002110004] [2024-11-13 15:59:13,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:13,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 15:59:13,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:13,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 15:59:13,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=259, Unknown=0, NotChecked=0, Total=420 [2024-11-13 15:59:13,162 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:13,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:13,459 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2024-11-13 15:59:13,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 15:59:13,459 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-13 15:59:13,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:13,460 INFO L225 Difference]: With dead ends: 76 [2024-11-13 15:59:13,460 INFO L226 Difference]: Without dead ends: 74 [2024-11-13 15:59:13,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 110 SyntacticMatches, 30 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 550 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=461, Invalid=799, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 15:59:13,462 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:13,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:59:13,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-13 15:59:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 68. [2024-11-13 15:59:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2024-11-13 15:59:13,469 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 64 [2024-11-13 15:59:13,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:13,469 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2024-11-13 15:59:13,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:13,470 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2024-11-13 15:59:13,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 15:59:13,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:13,470 INFO L215 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:13,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 15:59:13,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:13,671 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:13,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:13,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1321407284, now seen corresponding path program 29 times [2024-11-13 15:59:13,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:13,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453419010] [2024-11-13 15:59:13,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:13,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 302 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:14,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:14,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453419010] [2024-11-13 15:59:14,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453419010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:14,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602189278] [2024-11-13 15:59:14,598 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:59:14,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:14,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:14,600 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:14,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 15:59:14,754 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-13 15:59:14,755 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:14,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 15:59:14,760 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:15,603 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:15,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:16,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602189278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:16,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:16,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 53 [2024-11-13 15:59:16,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143707664] [2024-11-13 15:59:16,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:16,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-13 15:59:16,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:16,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-13 15:59:16,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 15:59:16,182 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 53 states, 53 states have (on average 2.2641509433962264) internal successors, (120), 53 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:16,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:16,413 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2024-11-13 15:59:16,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-13 15:59:16,413 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.2641509433962264) internal successors, (120), 53 states have internal predecessors, (120), 0 states have call successors, (0), 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 67 [2024-11-13 15:59:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:16,414 INFO L225 Difference]: With dead ends: 121 [2024-11-13 15:59:16,414 INFO L226 Difference]: Without dead ends: 69 [2024-11-13 15:59:16,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 85 SyntacticMatches, 31 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1725 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=634, Invalid=2122, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 15:59:16,416 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:16,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:59:16,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-13 15:59:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-13 15:59:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 68 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2024-11-13 15:59:16,423 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 67 [2024-11-13 15:59:16,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:16,424 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2024-11-13 15:59:16,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.2641509433962264) internal successors, (120), 53 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:16,424 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2024-11-13 15:59:16,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 15:59:16,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:16,425 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:16,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-13 15:59:16,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-13 15:59:16,626 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:16,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:16,626 INFO L85 PathProgramCache]: Analyzing trace with hash 253737064, now seen corresponding path program 30 times [2024-11-13 15:59:16,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:16,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3452396] [2024-11-13 15:59:16,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:16,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 120 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:17,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:17,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3452396] [2024-11-13 15:59:17,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3452396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:17,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495902717] [2024-11-13 15:59:17,187 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:59:17,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:17,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:17,190 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:17,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 15:59:17,352 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-11-13 15:59:17,353 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:17,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 15:59:17,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 136 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:17,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:17,960 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 136 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:17,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495902717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:17,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:17,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 22 [2024-11-13 15:59:17,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316381599] [2024-11-13 15:59:17,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:17,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 15:59:17,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:17,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 15:59:17,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=283, Unknown=0, NotChecked=0, Total=462 [2024-11-13 15:59:17,962 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:18,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:18,236 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2024-11-13 15:59:18,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 15:59:18,237 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-13 15:59:18,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:18,238 INFO L225 Difference]: With dead ends: 80 [2024-11-13 15:59:18,238 INFO L226 Difference]: Without dead ends: 78 [2024-11-13 15:59:18,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 117 SyntacticMatches, 32 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 15:59:18,239 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:18,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 24 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:59:18,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-13 15:59:18,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2024-11-13 15:59:18,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:18,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2024-11-13 15:59:18,249 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 68 [2024-11-13 15:59:18,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:18,250 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2024-11-13 15:59:18,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:18,250 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2024-11-13 15:59:18,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 15:59:18,251 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:18,251 INFO L215 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:18,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 15:59:18,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:18,455 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:18,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:18,456 INFO L85 PathProgramCache]: Analyzing trace with hash -56749041, now seen corresponding path program 31 times [2024-11-13 15:59:18,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:18,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731814893] [2024-11-13 15:59:18,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:18,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:18,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 346 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:19,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:19,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731814893] [2024-11-13 15:59:19,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731814893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:19,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512424045] [2024-11-13 15:59:19,321 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:59:19,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:19,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:19,324 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:19,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 15:59:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:19,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 15:59:19,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:20,362 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:20,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:20,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512424045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:20,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:20,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 56 [2024-11-13 15:59:20,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567141225] [2024-11-13 15:59:20,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:20,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 15:59:20,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:20,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 15:59:21,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 15:59:21,000 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 56 states, 56 states have (on average 2.267857142857143) internal successors, (127), 56 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:21,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:21,373 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions. [2024-11-13 15:59:21,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 15:59:21,374 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.267857142857143) internal successors, (127), 56 states have internal predecessors, (127), 0 states have call successors, (0), 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 71 [2024-11-13 15:59:21,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:21,374 INFO L225 Difference]: With dead ends: 128 [2024-11-13 15:59:21,375 INFO L226 Difference]: Without dead ends: 73 [2024-11-13 15:59:21,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 90 SyntacticMatches, 33 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1936 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=707, Invalid=2373, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 15:59:21,376 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:21,376 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 260 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:59:21,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-13 15:59:21,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-13 15:59:21,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2024-11-13 15:59:21,384 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 71 [2024-11-13 15:59:21,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:21,384 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2024-11-13 15:59:21,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.267857142857143) internal successors, (127), 56 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:21,385 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2024-11-13 15:59:21,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-13 15:59:21,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:21,386 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:21,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 15:59:21,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 15:59:21,589 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:21,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:21,590 INFO L85 PathProgramCache]: Analyzing trace with hash -826691157, now seen corresponding path program 32 times [2024-11-13 15:59:21,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:21,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461954656] [2024-11-13 15:59:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:21,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 136 proven. 409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:22,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:22,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461954656] [2024-11-13 15:59:22,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461954656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:22,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891932143] [2024-11-13 15:59:22,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:59:22,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:22,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:22,144 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:22,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 15:59:22,273 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:59:22,273 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:22,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-13 15:59:22,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 153 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:22,419 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 153 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:22,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891932143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:22,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:22,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2024-11-13 15:59:22,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400023324] [2024-11-13 15:59:22,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:22,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 15:59:22,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:22,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 15:59:22,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2024-11-13 15:59:22,914 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:23,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:23,219 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2024-11-13 15:59:23,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-13 15:59:23,220 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-13 15:59:23,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:23,221 INFO L225 Difference]: With dead ends: 84 [2024-11-13 15:59:23,221 INFO L226 Difference]: Without dead ends: 82 [2024-11-13 15:59:23,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 123 SyntacticMatches, 35 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 15:59:23,222 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:23,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:59:23,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-13 15:59:23,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2024-11-13 15:59:23,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:23,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2024-11-13 15:59:23,229 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 72 [2024-11-13 15:59:23,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:23,229 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2024-11-13 15:59:23,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.3043478260869565) internal successors, (76), 23 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:23,230 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2024-11-13 15:59:23,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 15:59:23,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:23,230 INFO L215 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:23,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 15:59:23,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-13 15:59:23,431 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:23,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash -608964628, now seen corresponding path program 33 times [2024-11-13 15:59:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:23,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868231130] [2024-11-13 15:59:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:23,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 393 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:24,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:24,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868231130] [2024-11-13 15:59:24,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868231130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:24,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151934127] [2024-11-13 15:59:24,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:59:24,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:24,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:24,347 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:24,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 15:59:24,510 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2024-11-13 15:59:24,510 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:24,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-13 15:59:24,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:25,461 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:25,461 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:26,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151934127] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:26,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:26,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2024-11-13 15:59:26,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544053386] [2024-11-13 15:59:26,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:26,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-13 15:59:26,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:26,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-13 15:59:26,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-11-13 15:59:26,149 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 59 states, 59 states have (on average 2.2711864406779663) internal successors, (134), 59 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:26,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:26,434 INFO L93 Difference]: Finished difference Result 135 states and 137 transitions. [2024-11-13 15:59:26,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 15:59:26,435 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.2711864406779663) internal successors, (134), 59 states have internal predecessors, (134), 0 states have call successors, (0), 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 75 [2024-11-13 15:59:26,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:26,436 INFO L225 Difference]: With dead ends: 135 [2024-11-13 15:59:26,436 INFO L226 Difference]: Without dead ends: 77 [2024-11-13 15:59:26,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 95 SyntacticMatches, 35 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2159 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=784, Invalid=2638, Unknown=0, NotChecked=0, Total=3422 [2024-11-13 15:59:26,438 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:26,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 191 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:59:26,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-13 15:59:26,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-13 15:59:26,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 76 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2024-11-13 15:59:26,446 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 75 [2024-11-13 15:59:26,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:26,446 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2024-11-13 15:59:26,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.2711864406779663) internal successors, (134), 59 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:26,446 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2024-11-13 15:59:26,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 15:59:26,447 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:26,447 INFO L215 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:26,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 15:59:26,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 15:59:26,648 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:26,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:26,648 INFO L85 PathProgramCache]: Analyzing trace with hash -716218488, now seen corresponding path program 34 times [2024-11-13 15:59:26,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:26,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212555762] [2024-11-13 15:59:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:26,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:27,210 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 153 proven. 460 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:27,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:27,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212555762] [2024-11-13 15:59:27,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212555762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:27,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950320906] [2024-11-13 15:59:27,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:59:27,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:27,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:27,214 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:27,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 15:59:27,337 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:59:27,337 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:27,339 INFO L255 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 15:59:27,341 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:27,472 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:27,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950320906] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:27,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:27,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 24 [2024-11-13 15:59:27,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007333764] [2024-11-13 15:59:27,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:27,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 15:59:27,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:27,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 15:59:27,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=334, Unknown=0, NotChecked=0, Total=552 [2024-11-13 15:59:27,979 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand has 24 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:28,249 INFO L93 Difference]: Finished difference Result 88 states and 89 transitions. [2024-11-13 15:59:28,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 15:59:28,252 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2024-11-13 15:59:28,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:28,252 INFO L225 Difference]: With dead ends: 88 [2024-11-13 15:59:28,253 INFO L226 Difference]: Without dead ends: 86 [2024-11-13 15:59:28,253 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 130 SyntacticMatches, 37 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=632, Invalid=1090, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 15:59:28,254 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:28,254 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:59:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-13 15:59:28,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 80. [2024-11-13 15:59:28,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2024-11-13 15:59:28,260 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 76 [2024-11-13 15:59:28,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:28,260 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2024-11-13 15:59:28,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.3333333333333335) internal successors, (80), 24 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:28,260 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2024-11-13 15:59:28,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-13 15:59:28,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:28,261 INFO L215 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:28,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 15:59:28,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 15:59:28,462 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:28,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:28,462 INFO L85 PathProgramCache]: Analyzing trace with hash 537368815, now seen corresponding path program 35 times [2024-11-13 15:59:28,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:28,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329546073] [2024-11-13 15:59:28,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:28,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 443 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:29,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:29,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329546073] [2024-11-13 15:59:29,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329546073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:29,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806947254] [2024-11-13 15:59:29,667 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:59:29,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:29,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:29,670 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:29,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 15:59:29,833 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2024-11-13 15:59:29,833 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:29,835 INFO L255 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 15:59:29,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:30,864 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:30,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:31,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806947254] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:31,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:31,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 62 [2024-11-13 15:59:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844545100] [2024-11-13 15:59:31,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:31,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 15:59:31,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:31,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 15:59:31,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=2917, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 15:59:31,641 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 62 states, 62 states have (on average 2.274193548387097) internal successors, (141), 62 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:31,878 INFO L93 Difference]: Finished difference Result 142 states and 144 transitions. [2024-11-13 15:59:31,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 15:59:31,879 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.274193548387097) internal successors, (141), 62 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-13 15:59:31,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:31,879 INFO L225 Difference]: With dead ends: 142 [2024-11-13 15:59:31,880 INFO L226 Difference]: Without dead ends: 81 [2024-11-13 15:59:31,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 100 SyntacticMatches, 37 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2394 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=865, Invalid=2917, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 15:59:31,881 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:31,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:59:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-13 15:59:31,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-13 15:59:31,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.025) internal successors, (82), 80 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:31,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2024-11-13 15:59:31,890 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 79 [2024-11-13 15:59:31,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:31,890 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2024-11-13 15:59:31,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 2.274193548387097) internal successors, (141), 62 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:31,890 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2024-11-13 15:59:31,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 15:59:31,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:31,891 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:31,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-13 15:59:32,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 15:59:32,092 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:32,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:32,092 INFO L85 PathProgramCache]: Analyzing trace with hash -118891893, now seen corresponding path program 36 times [2024-11-13 15:59:32,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:32,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313254889] [2024-11-13 15:59:32,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:32,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 171 proven. 514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:32,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:32,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313254889] [2024-11-13 15:59:32,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313254889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:32,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527373969] [2024-11-13 15:59:32,687 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:59:32,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:32,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:32,689 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:32,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 15:59:32,861 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2024-11-13 15:59:32,861 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:32,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 15:59:32,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 190 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:33,006 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:33,544 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 190 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:33,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527373969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:33,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:33,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 25 [2024-11-13 15:59:33,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513593515] [2024-11-13 15:59:33,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:33,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 15:59:33,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:33,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 15:59:33,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=361, Unknown=0, NotChecked=0, Total=600 [2024-11-13 15:59:33,547 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 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 15:59:33,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:33,925 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2024-11-13 15:59:33,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 15:59:33,926 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 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 80 [2024-11-13 15:59:33,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:33,926 INFO L225 Difference]: With dead ends: 92 [2024-11-13 15:59:33,926 INFO L226 Difference]: Without dead ends: 90 [2024-11-13 15:59:33,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 138 SyntacticMatches, 38 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 15:59:33,927 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:33,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:59:33,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-13 15:59:33,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 84. [2024-11-13 15:59:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2024-11-13 15:59:33,933 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 80 [2024-11-13 15:59:33,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:33,933 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2024-11-13 15:59:33,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.36) internal successors, (84), 25 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 15:59:33,933 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2024-11-13 15:59:33,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-13 15:59:33,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:33,934 INFO L215 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:33,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-13 15:59:34,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 15:59:34,134 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:34,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:34,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1444453132, now seen corresponding path program 37 times [2024-11-13 15:59:34,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:34,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050763182] [2024-11-13 15:59:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:34,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:35,327 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 496 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:35,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:35,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050763182] [2024-11-13 15:59:35,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050763182] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:35,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1470987507] [2024-11-13 15:59:35,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:59:35,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:35,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:35,330 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:35,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 15:59:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:35,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 15:59:35,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:36,535 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:36,535 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:37,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1470987507] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:37,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:37,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2024-11-13 15:59:37,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509405221] [2024-11-13 15:59:37,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:37,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-13 15:59:37,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:37,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-13 15:59:37,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2024-11-13 15:59:37,345 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 65 states, 65 states have (on average 2.276923076923077) internal successors, (148), 65 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:37,681 INFO L93 Difference]: Finished difference Result 149 states and 151 transitions. [2024-11-13 15:59:37,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-13 15:59:37,682 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.276923076923077) internal successors, (148), 65 states have internal predecessors, (148), 0 states have call successors, (0), 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 83 [2024-11-13 15:59:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:37,682 INFO L225 Difference]: With dead ends: 149 [2024-11-13 15:59:37,682 INFO L226 Difference]: Without dead ends: 85 [2024-11-13 15:59:37,683 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 105 SyntacticMatches, 39 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2641 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=950, Invalid=3210, Unknown=0, NotChecked=0, Total=4160 [2024-11-13 15:59:37,684 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:37,684 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:59:37,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-13 15:59:37,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-13 15:59:37,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 84 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2024-11-13 15:59:37,693 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 83 [2024-11-13 15:59:37,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:37,693 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2024-11-13 15:59:37,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.276923076923077) internal successors, (148), 65 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:37,694 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2024-11-13 15:59:37,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-13 15:59:37,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:37,695 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:37,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-13 15:59:37,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-13 15:59:37,895 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:37,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:37,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1970753880, now seen corresponding path program 38 times [2024-11-13 15:59:37,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:37,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950219092] [2024-11-13 15:59:37,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:37,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 190 proven. 571 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:38,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:38,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950219092] [2024-11-13 15:59:38,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950219092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:38,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986493593] [2024-11-13 15:59:38,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:59:38,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:38,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:38,485 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:38,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-13 15:59:38,640 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:59:38,640 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:38,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 15:59:38,645 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 210 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:38,830 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:39,531 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 210 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:39,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986493593] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:39,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:39,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 26 [2024-11-13 15:59:39,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262609336] [2024-11-13 15:59:39,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:39,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:59:39,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:39,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:59:39,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=389, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:59:39,534 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:39,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:39,971 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2024-11-13 15:59:39,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-13 15:59:39,972 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 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 84 [2024-11-13 15:59:39,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:39,973 INFO L225 Difference]: With dead ends: 96 [2024-11-13 15:59:39,974 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 15:59:39,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 144 SyntacticMatches, 41 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=761, Invalid=1309, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 15:59:39,975 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:39,975 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:59:39,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 15:59:39,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2024-11-13 15:59:39,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:39,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2024-11-13 15:59:39,991 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 84 [2024-11-13 15:59:39,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:39,991 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2024-11-13 15:59:39,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 26 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2024-11-13 15:59:39,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-13 15:59:39,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:39,992 INFO L215 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:40,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-13 15:59:40,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 15:59:40,193 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:40,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1478915535, now seen corresponding path program 39 times [2024-11-13 15:59:40,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:40,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259656027] [2024-11-13 15:59:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:41,313 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 552 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:41,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:41,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259656027] [2024-11-13 15:59:41,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259656027] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:41,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201285477] [2024-11-13 15:59:41,314 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:59:41,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:41,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:41,317 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:41,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 15:59:41,508 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2024-11-13 15:59:41,508 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:41,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 15:59:41,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:42,790 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:42,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:43,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201285477] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:43,701 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:43,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 68 [2024-11-13 15:59:43,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421165470] [2024-11-13 15:59:43,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:43,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-13 15:59:43,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:43,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-13 15:59:43,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 15:59:43,704 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:44,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:44,063 INFO L93 Difference]: Finished difference Result 156 states and 158 transitions. [2024-11-13 15:59:44,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-13 15:59:44,064 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-11-13 15:59:44,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:44,065 INFO L225 Difference]: With dead ends: 156 [2024-11-13 15:59:44,065 INFO L226 Difference]: Without dead ends: 89 [2024-11-13 15:59:44,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 110 SyntacticMatches, 41 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1039, Invalid=3517, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 15:59:44,066 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:44,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 314 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:59:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-13 15:59:44,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-13 15:59:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 88 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:44,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2024-11-13 15:59:44,079 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 87 [2024-11-13 15:59:44,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:44,079 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2024-11-13 15:59:44,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:44,080 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2024-11-13 15:59:44,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-13 15:59:44,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:44,081 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:44,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-13 15:59:44,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:44,282 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:44,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:44,282 INFO L85 PathProgramCache]: Analyzing trace with hash -387228821, now seen corresponding path program 40 times [2024-11-13 15:59:44,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:44,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556111558] [2024-11-13 15:59:44,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:44,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:44,962 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 210 proven. 631 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:44,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:44,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556111558] [2024-11-13 15:59:44,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556111558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:44,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959366411] [2024-11-13 15:59:44,962 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:59:44,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:44,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:44,964 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:44,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-13 15:59:45,131 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:59:45,131 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:45,134 INFO L255 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 15:59:45,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:45,273 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:45,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959366411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:45,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:45,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 27 [2024-11-13 15:59:45,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169976537] [2024-11-13 15:59:45,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:45,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 15:59:45,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:45,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 15:59:45,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=418, Unknown=0, NotChecked=0, Total=702 [2024-11-13 15:59:45,862 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand has 27 states, 27 states have (on average 3.4074074074074074) internal successors, (92), 27 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 15:59:46,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:46,241 INFO L93 Difference]: Finished difference Result 100 states and 101 transitions. [2024-11-13 15:59:46,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-13 15:59:46,241 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.4074074074074074) internal successors, (92), 27 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 88 [2024-11-13 15:59:46,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:46,242 INFO L225 Difference]: With dead ends: 100 [2024-11-13 15:59:46,242 INFO L226 Difference]: Without dead ends: 98 [2024-11-13 15:59:46,242 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 152 SyntacticMatches, 42 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=830, Invalid=1426, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 15:59:46,243 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:46,243 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:59:46,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-13 15:59:46,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2024-11-13 15:59:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:46,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2024-11-13 15:59:46,254 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 88 [2024-11-13 15:59:46,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:46,254 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2024-11-13 15:59:46,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.4074074074074074) internal successors, (92), 27 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 15:59:46,255 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2024-11-13 15:59:46,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-13 15:59:46,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:46,256 INFO L215 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:46,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-11-13 15:59:46,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:46,456 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:46,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:46,457 INFO L85 PathProgramCache]: Analyzing trace with hash 353168940, now seen corresponding path program 41 times [2024-11-13 15:59:46,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:46,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406254791] [2024-11-13 15:59:46,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:46,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:46,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:47,666 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 611 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:47,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:47,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406254791] [2024-11-13 15:59:47,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406254791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:47,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650818903] [2024-11-13 15:59:47,666 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:59:47,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:47,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:47,669 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:47,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-13 15:59:47,872 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2024-11-13 15:59:47,872 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:47,875 INFO L255 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 15:59:47,878 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:49,170 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:49,170 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:50,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650818903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:50,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:50,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 71 [2024-11-13 15:59:50,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242056400] [2024-11-13 15:59:50,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:50,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2024-11-13 15:59:50,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:50,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2024-11-13 15:59:50,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1132, Invalid=3838, Unknown=0, NotChecked=0, Total=4970 [2024-11-13 15:59:50,234 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 71 states, 71 states have (on average 2.2816901408450705) internal successors, (162), 71 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:50,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:50,527 INFO L93 Difference]: Finished difference Result 163 states and 165 transitions. [2024-11-13 15:59:50,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-13 15:59:50,528 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.2816901408450705) internal successors, (162), 71 states have internal predecessors, (162), 0 states have call successors, (0), 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 91 [2024-11-13 15:59:50,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:50,528 INFO L225 Difference]: With dead ends: 163 [2024-11-13 15:59:50,529 INFO L226 Difference]: Without dead ends: 93 [2024-11-13 15:59:50,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 115 SyntacticMatches, 43 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3171 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1132, Invalid=3838, Unknown=0, NotChecked=0, Total=4970 [2024-11-13 15:59:50,530 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:50,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 221 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:59:50,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-13 15:59:50,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-13 15:59:50,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 92 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:50,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2024-11-13 15:59:50,541 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 91 [2024-11-13 15:59:50,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:50,544 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2024-11-13 15:59:50,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.2816901408450705) internal successors, (162), 71 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:50,545 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2024-11-13 15:59:50,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-13 15:59:50,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:50,546 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:50,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-13 15:59:50,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:50,747 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:50,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:50,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1198368200, now seen corresponding path program 42 times [2024-11-13 15:59:50,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:50,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337158598] [2024-11-13 15:59:50,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:50,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 231 proven. 694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:51,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:51,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337158598] [2024-11-13 15:59:51,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337158598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:51,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739837176] [2024-11-13 15:59:51,594 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:59:51,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:51,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:51,596 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:51,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-11-13 15:59:51,771 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2024-11-13 15:59:51,771 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:51,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 15:59:51,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 253 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:51,931 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:52,654 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 253 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:52,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739837176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:52,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:52,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 28 [2024-11-13 15:59:52,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678984465] [2024-11-13 15:59:52,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:52,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 15:59:52,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:52,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 15:59:52,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2024-11-13 15:59:52,656 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand has 28 states, 28 states have (on average 3.4285714285714284) internal successors, (96), 28 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:53,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:53,103 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2024-11-13 15:59:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 15:59:53,103 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.4285714285714284) internal successors, (96), 28 states have internal predecessors, (96), 0 states have call successors, (0), 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 92 [2024-11-13 15:59:53,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:53,104 INFO L225 Difference]: With dead ends: 104 [2024-11-13 15:59:53,104 INFO L226 Difference]: Without dead ends: 102 [2024-11-13 15:59:53,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 159 SyntacticMatches, 44 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=902, Invalid=1548, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 15:59:53,105 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:53,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 40 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:59:53,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-13 15:59:53,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 96. [2024-11-13 15:59:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:53,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2024-11-13 15:59:53,115 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 92 [2024-11-13 15:59:53,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:53,115 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2024-11-13 15:59:53,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.4285714285714284) internal successors, (96), 28 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2024-11-13 15:59:53,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-13 15:59:53,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:53,116 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:53,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2024-11-13 15:59:53,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:53,317 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:53,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:53,318 INFO L85 PathProgramCache]: Analyzing trace with hash 823700143, now seen corresponding path program 43 times [2024-11-13 15:59:53,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:53,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010939827] [2024-11-13 15:59:53,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:53,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:54,630 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 673 proven. 317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:54,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:54,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010939827] [2024-11-13 15:59:54,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010939827] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:54,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310614192] [2024-11-13 15:59:54,630 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:59:54,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:54,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:54,632 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:54,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-13 15:59:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:54,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 15:59:54,802 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:56,223 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:57,308 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:57,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310614192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:57,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:57,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 74 [2024-11-13 15:59:57,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462971143] [2024-11-13 15:59:57,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:57,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2024-11-13 15:59:57,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:57,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2024-11-13 15:59:57,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1229, Invalid=4173, Unknown=0, NotChecked=0, Total=5402 [2024-11-13 15:59:57,311 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 74 states, 74 states have (on average 2.2837837837837838) internal successors, (169), 74 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:57,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:59:57,608 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions. [2024-11-13 15:59:57,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-13 15:59:57,609 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.2837837837837838) internal successors, (169), 74 states have internal predecessors, (169), 0 states have call successors, (0), 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 95 [2024-11-13 15:59:57,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:59:57,610 INFO L225 Difference]: With dead ends: 170 [2024-11-13 15:59:57,610 INFO L226 Difference]: Without dead ends: 97 [2024-11-13 15:59:57,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 120 SyntacticMatches, 45 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3454 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1229, Invalid=4173, Unknown=0, NotChecked=0, Total=5402 [2024-11-13 15:59:57,611 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:59:57,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 243 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:59:57,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-13 15:59:57,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-13 15:59:57,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:57,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2024-11-13 15:59:57,621 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 95 [2024-11-13 15:59:57,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:59:57,621 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2024-11-13 15:59:57,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 74 states have (on average 2.2837837837837838) internal successors, (169), 74 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:59:57,622 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2024-11-13 15:59:57,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-13 15:59:57,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:59:57,623 INFO L215 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1, 1] [2024-11-13 15:59:57,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-13 15:59:57,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:57,823 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 15:59:57,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:59:57,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1323054155, now seen corresponding path program 44 times [2024-11-13 15:59:57,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:59:57,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380736924] [2024-11-13 15:59:57,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:59:57,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:59:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:59:58,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 253 proven. 760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:58,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:59:58,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380736924] [2024-11-13 15:59:58,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380736924] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:59:58,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872925852] [2024-11-13 15:59:58,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:59:58,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:59:58,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:59:58,573 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:59:58,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-11-13 15:59:58,746 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:59:58,746 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:59:58,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-13 15:59:58,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:59:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 276 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:58,901 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:59:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 276 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:59:59,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872925852] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:59:59,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:59:59,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 29 [2024-11-13 15:59:59,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626675451] [2024-11-13 15:59:59,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:59:59,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 15:59:59,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:59:59,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 15:59:59,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=479, Unknown=0, NotChecked=0, Total=812 [2024-11-13 15:59:59,711 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 16:00:00,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:00,145 INFO L93 Difference]: Finished difference Result 108 states and 109 transitions. [2024-11-13 16:00:00,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-13 16:00:00,145 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 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 96 [2024-11-13 16:00:00,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:00,147 INFO L225 Difference]: With dead ends: 108 [2024-11-13 16:00:00,147 INFO L226 Difference]: Without dead ends: 106 [2024-11-13 16:00:00,147 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 165 SyntacticMatches, 47 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=977, Invalid=1675, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 16:00:00,148 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:00,148 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:00:00,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-13 16:00:00,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 100. [2024-11-13 16:00:00,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 0 states have call successors, (0), 0 states 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 16:00:00,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2024-11-13 16:00:00,155 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 96 [2024-11-13 16:00:00,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:00,155 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2024-11-13 16:00:00,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.4482758620689653) internal successors, (100), 29 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 16:00:00,155 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2024-11-13 16:00:00,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-13 16:00:00,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:00,156 INFO L215 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:00,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2024-11-13 16:00:00,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:00,356 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:00,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:00,356 INFO L85 PathProgramCache]: Analyzing trace with hash 196274508, now seen corresponding path program 45 times [2024-11-13 16:00:00,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:00,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103346257] [2024-11-13 16:00:00,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:00,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:01,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 738 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:01,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:01,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103346257] [2024-11-13 16:00:01,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103346257] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:01,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763266097] [2024-11-13 16:00:01,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:00:01,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:01,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:01,851 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:01,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-13 16:00:02,066 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-11-13 16:00:02,066 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:00:02,069 INFO L255 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-13 16:00:02,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:03,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:03,574 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:04,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763266097] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:04,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:04,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 77 [2024-11-13 16:00:04,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830880504] [2024-11-13 16:00:04,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:04,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-13 16:00:04,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:04,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-13 16:00:04,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2024-11-13 16:00:04,774 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 77 states, 77 states have (on average 2.2857142857142856) internal successors, (176), 77 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 16:00:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:05,123 INFO L93 Difference]: Finished difference Result 177 states and 179 transitions. [2024-11-13 16:00:05,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-13 16:00:05,124 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.2857142857142856) internal successors, (176), 77 states have internal predecessors, (176), 0 states have call successors, (0), 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 99 [2024-11-13 16:00:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:05,125 INFO L225 Difference]: With dead ends: 177 [2024-11-13 16:00:05,125 INFO L226 Difference]: Without dead ends: 101 [2024-11-13 16:00:05,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 125 SyntacticMatches, 47 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3749 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1330, Invalid=4522, Unknown=0, NotChecked=0, Total=5852 [2024-11-13 16:00:05,126 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:05,126 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:00:05,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-13 16:00:05,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-11-13 16:00:05,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.02) internal successors, (102), 100 states have internal predecessors, (102), 0 states have call successors, (0), 0 states 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 16:00:05,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2024-11-13 16:00:05,138 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 99 [2024-11-13 16:00:05,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:05,138 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2024-11-13 16:00:05,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.2857142857142856) internal successors, (176), 77 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 16:00:05,138 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2024-11-13 16:00:05,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-13 16:00:05,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:05,139 INFO L215 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:05,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-13 16:00:05,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:05,340 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:05,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:05,340 INFO L85 PathProgramCache]: Analyzing trace with hash 589317352, now seen corresponding path program 46 times [2024-11-13 16:00:05,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:05,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028040793] [2024-11-13 16:00:05,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:05,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:06,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 276 proven. 829 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:06,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:06,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028040793] [2024-11-13 16:00:06,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028040793] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:06,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219675576] [2024-11-13 16:00:06,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:00:06,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:06,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:06,106 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:06,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2024-11-13 16:00:06,282 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:00:06,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:00:06,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 16:00:06,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:06,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:06,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:07,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:07,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219675576] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:07,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:07,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 30 [2024-11-13 16:00:07,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548767402] [2024-11-13 16:00:07,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:07,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-13 16:00:07,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:07,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-13 16:00:07,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=511, Unknown=0, NotChecked=0, Total=870 [2024-11-13 16:00:07,189 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 30 states, 30 states have (on average 3.466666666666667) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 16:00:07,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:07,671 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2024-11-13 16:00:07,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-13 16:00:07,672 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.466666666666667) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 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 100 [2024-11-13 16:00:07,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:07,673 INFO L225 Difference]: With dead ends: 112 [2024-11-13 16:00:07,673 INFO L226 Difference]: Without dead ends: 110 [2024-11-13 16:00:07,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 173 SyntacticMatches, 48 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1055, Invalid=1807, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 16:00:07,674 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:07,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:00:07,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-13 16:00:07,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 104. [2024-11-13 16:00:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 16:00:07,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2024-11-13 16:00:07,687 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 100 [2024-11-13 16:00:07,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:07,687 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2024-11-13 16:00:07,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.466666666666667) internal successors, (104), 30 states have internal predecessors, (104), 0 states have call successors, (0), 0 states 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 16:00:07,688 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2024-11-13 16:00:07,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 16:00:07,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:07,689 INFO L215 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:07,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2024-11-13 16:00:07,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:07,890 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:07,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:07,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1468254321, now seen corresponding path program 47 times [2024-11-13 16:00:07,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:07,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673351885] [2024-11-13 16:00:07,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:07,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:07,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 806 proven. 370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:09,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:09,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673351885] [2024-11-13 16:00:09,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673351885] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:09,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350575325] [2024-11-13 16:00:09,429 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:00:09,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:09,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:09,432 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:09,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-13 16:00:09,706 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2024-11-13 16:00:09,707 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:00:09,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-13 16:00:09,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:11,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:11,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:12,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:12,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350575325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:12,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:12,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 80 [2024-11-13 16:00:12,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468874300] [2024-11-13 16:00:12,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:12,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2024-11-13 16:00:12,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:12,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2024-11-13 16:00:12,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1435, Invalid=4885, Unknown=0, NotChecked=0, Total=6320 [2024-11-13 16:00:12,515 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 80 states, 80 states have (on average 2.2875) internal successors, (183), 80 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 16:00:12,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:12,968 INFO L93 Difference]: Finished difference Result 184 states and 186 transitions. [2024-11-13 16:00:12,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-13 16:00:12,969 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.2875) internal successors, (183), 80 states have internal predecessors, (183), 0 states have call successors, (0), 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 103 [2024-11-13 16:00:12,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:12,970 INFO L225 Difference]: With dead ends: 184 [2024-11-13 16:00:12,970 INFO L226 Difference]: Without dead ends: 105 [2024-11-13 16:00:12,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 130 SyntacticMatches, 49 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4056 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1435, Invalid=4885, Unknown=0, NotChecked=0, Total=6320 [2024-11-13 16:00:12,971 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:12,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:00:12,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-13 16:00:12,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-13 16:00:12,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 104 states have internal predecessors, (106), 0 states have call successors, (0), 0 states 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 16:00:12,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2024-11-13 16:00:12,984 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 103 [2024-11-13 16:00:12,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:12,985 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2024-11-13 16:00:12,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.2875) internal successors, (183), 80 states have internal predecessors, (183), 0 states have call successors, (0), 0 states 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 16:00:12,985 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2024-11-13 16:00:12,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-13 16:00:12,986 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:12,986 INFO L215 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:13,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2024-11-13 16:00:13,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-13 16:00:13,187 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:13,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:13,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1280992555, now seen corresponding path program 48 times [2024-11-13 16:00:13,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:13,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420490056] [2024-11-13 16:00:13,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:13,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:14,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 300 proven. 901 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:14,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:14,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420490056] [2024-11-13 16:00:14,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420490056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:14,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007634691] [2024-11-13 16:00:14,068 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:00:14,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:14,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:14,070 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:14,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2024-11-13 16:00:14,329 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-11-13 16:00:14,330 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:00:14,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 16:00:14,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:14,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 325 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:14,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:15,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 325 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:15,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007634691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:15,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:15,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 31 [2024-11-13 16:00:15,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826742692] [2024-11-13 16:00:15,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:15,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-13 16:00:15,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:15,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-13 16:00:15,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=544, Unknown=0, NotChecked=0, Total=930 [2024-11-13 16:00:15,427 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand has 31 states, 31 states have (on average 3.4838709677419355) internal successors, (108), 31 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 16:00:15,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:15,932 INFO L93 Difference]: Finished difference Result 116 states and 117 transitions. [2024-11-13 16:00:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2024-11-13 16:00:15,933 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4838709677419355) internal successors, (108), 31 states have internal predecessors, (108), 0 states have call successors, (0), 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 104 [2024-11-13 16:00:15,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:15,934 INFO L225 Difference]: With dead ends: 116 [2024-11-13 16:00:15,934 INFO L226 Difference]: Without dead ends: 114 [2024-11-13 16:00:15,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 180 SyntacticMatches, 50 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1136, Invalid=1944, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 16:00:15,935 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:15,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 34 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:00:15,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-13 16:00:15,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2024-11-13 16:00:15,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 0 states have call successors, (0), 0 states 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 16:00:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2024-11-13 16:00:15,955 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 104 [2024-11-13 16:00:15,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:15,956 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2024-11-13 16:00:15,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4838709677419355) internal successors, (108), 31 states have internal predecessors, (108), 0 states have call successors, (0), 0 states 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 16:00:15,956 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2024-11-13 16:00:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-13 16:00:15,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:15,957 INFO L215 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:15,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Ended with exit code 0 [2024-11-13 16:00:16,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2024-11-13 16:00:16,161 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:16,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:16,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1269599340, now seen corresponding path program 49 times [2024-11-13 16:00:16,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:16,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140127165] [2024-11-13 16:00:16,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:16,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:16,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:17,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 877 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:17,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:17,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140127165] [2024-11-13 16:00:17,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140127165] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:17,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805469869] [2024-11-13 16:00:17,824 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:00:17,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:17,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:17,826 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:17,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2024-11-13 16:00:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:18,028 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 16:00:18,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:19,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:19,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:21,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805469869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:21,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:21,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 83 [2024-11-13 16:00:21,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010779632] [2024-11-13 16:00:21,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:21,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2024-11-13 16:00:21,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:21,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2024-11-13 16:00:21,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2024-11-13 16:00:21,180 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 83 states, 83 states have (on average 2.289156626506024) internal successors, (190), 83 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 16:00:21,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:21,715 INFO L93 Difference]: Finished difference Result 191 states and 193 transitions. [2024-11-13 16:00:21,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-13 16:00:21,716 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.289156626506024) internal successors, (190), 83 states have internal predecessors, (190), 0 states have call successors, (0), 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 107 [2024-11-13 16:00:21,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:21,717 INFO L225 Difference]: With dead ends: 191 [2024-11-13 16:00:21,717 INFO L226 Difference]: Without dead ends: 109 [2024-11-13 16:00:21,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 135 SyntacticMatches, 51 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4375 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1544, Invalid=5262, Unknown=0, NotChecked=0, Total=6806 [2024-11-13 16:00:21,719 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:21,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 319 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:00:21,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-13 16:00:21,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-13 16:00:21,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 108 states have internal predecessors, (110), 0 states have call successors, (0), 0 states 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 16:00:21,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions. [2024-11-13 16:00:21,743 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 107 [2024-11-13 16:00:21,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:21,743 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions. [2024-11-13 16:00:21,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 2.289156626506024) internal successors, (190), 83 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 16:00:21,745 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions. [2024-11-13 16:00:21,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-13 16:00:21,745 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:21,746 INFO L215 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:21,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2024-11-13 16:00:21,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:21,947 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:21,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:21,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1396870152, now seen corresponding path program 50 times [2024-11-13 16:00:21,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:21,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639512148] [2024-11-13 16:00:21,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:21,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 325 proven. 976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:22,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:22,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639512148] [2024-11-13 16:00:22,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639512148] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:22,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540869765] [2024-11-13 16:00:22,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:00:22,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:22,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:22,876 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:22,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2024-11-13 16:00:23,084 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:00:23,084 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:00:23,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 16:00:23,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 351 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:23,278 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:24,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 351 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:24,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540869765] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:24,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:24,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 32 [2024-11-13 16:00:24,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402241096] [2024-11-13 16:00:24,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:24,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-13 16:00:24,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:24,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-13 16:00:24,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=578, Unknown=0, NotChecked=0, Total=992 [2024-11-13 16:00:24,232 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 16:00:24,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:24,777 INFO L93 Difference]: Finished difference Result 120 states and 121 transitions. [2024-11-13 16:00:24,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-13 16:00:24,778 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 0 states have call successors, (0), 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 108 [2024-11-13 16:00:24,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:24,779 INFO L225 Difference]: With dead ends: 120 [2024-11-13 16:00:24,779 INFO L226 Difference]: Without dead ends: 118 [2024-11-13 16:00:24,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 186 SyntacticMatches, 53 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1220, Invalid=2086, Unknown=0, NotChecked=0, Total=3306 [2024-11-13 16:00:24,780 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:24,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 33 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:00:24,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-13 16:00:24,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 112. [2024-11-13 16:00:24,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 16:00:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2024-11-13 16:00:24,794 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 108 [2024-11-13 16:00:24,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:24,794 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2024-11-13 16:00:24,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.5) internal successors, (112), 32 states have internal predecessors, (112), 0 states have call successors, (0), 0 states 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 16:00:24,794 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2024-11-13 16:00:24,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-13 16:00:24,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:24,795 INFO L215 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:24,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2024-11-13 16:00:24,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:24,996 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:24,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:24,996 INFO L85 PathProgramCache]: Analyzing trace with hash 225385583, now seen corresponding path program 51 times [2024-11-13 16:00:24,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:24,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349756007] [2024-11-13 16:00:24,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:24,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:25,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:26,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 951 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:26,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:26,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349756007] [2024-11-13 16:00:26,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349756007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:26,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738117356] [2024-11-13 16:00:26,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:00:26,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:26,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:26,685 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:26,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2024-11-13 16:00:26,990 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-11-13 16:00:26,990 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:00:26,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 16:00:26,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:28,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:28,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:29,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:29,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738117356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:29,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:29,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 86 [2024-11-13 16:00:29,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908243746] [2024-11-13 16:00:29,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:29,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2024-11-13 16:00:29,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:29,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2024-11-13 16:00:29,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1657, Invalid=5653, Unknown=0, NotChecked=0, Total=7310 [2024-11-13 16:00:29,775 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 86 states, 86 states have (on average 2.2906976744186047) internal successors, (197), 86 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 16:00:30,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:30,227 INFO L93 Difference]: Finished difference Result 198 states and 200 transitions. [2024-11-13 16:00:30,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-13 16:00:30,227 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.2906976744186047) internal successors, (197), 86 states have internal predecessors, (197), 0 states have call successors, (0), 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 111 [2024-11-13 16:00:30,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:30,228 INFO L225 Difference]: With dead ends: 198 [2024-11-13 16:00:30,228 INFO L226 Difference]: Without dead ends: 113 [2024-11-13 16:00:30,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 140 SyntacticMatches, 53 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4706 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1657, Invalid=5653, Unknown=0, NotChecked=0, Total=7310 [2024-11-13 16:00:30,229 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:30,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 348 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:00:30,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-13 16:00:30,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2024-11-13 16:00:30,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 112 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:00:30,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2024-11-13 16:00:30,238 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 111 [2024-11-13 16:00:30,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:30,238 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2024-11-13 16:00:30,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.2906976744186047) internal successors, (197), 86 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 16:00:30,238 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2024-11-13 16:00:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 16:00:30,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:30,238 INFO L215 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:30,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2024-11-13 16:00:30,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-13 16:00:30,439 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:30,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:30,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1417932299, now seen corresponding path program 52 times [2024-11-13 16:00:30,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:30,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146381055] [2024-11-13 16:00:30,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:30,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:30,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 351 proven. 1054 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:31,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:31,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146381055] [2024-11-13 16:00:31,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146381055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:31,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605662328] [2024-11-13 16:00:31,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:00:31,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:31,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:31,239 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:31,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2024-11-13 16:00:31,422 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:00:31,422 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:00:31,426 INFO L255 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-13 16:00:31,428 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:31,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:31,607 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:32,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:32,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605662328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:32,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:32,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 33 [2024-11-13 16:00:32,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010999764] [2024-11-13 16:00:32,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:32,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 16:00:32,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:32,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 16:00:32,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=613, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 16:00:32,612 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand has 33 states, 33 states have (on average 3.515151515151515) internal successors, (116), 33 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 16:00:33,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:33,188 INFO L93 Difference]: Finished difference Result 124 states and 125 transitions. [2024-11-13 16:00:33,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-13 16:00:33,189 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.515151515151515) internal successors, (116), 33 states have internal predecessors, (116), 0 states have call successors, (0), 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 112 [2024-11-13 16:00:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:33,190 INFO L225 Difference]: With dead ends: 124 [2024-11-13 16:00:33,190 INFO L226 Difference]: Without dead ends: 122 [2024-11-13 16:00:33,191 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 194 SyntacticMatches, 54 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1307, Invalid=2233, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 16:00:33,191 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:33,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:00:33,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-13 16:00:33,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 116. [2024-11-13 16:00:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 16:00:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2024-11-13 16:00:33,200 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 112 [2024-11-13 16:00:33,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:33,201 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2024-11-13 16:00:33,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.515151515151515) internal successors, (116), 33 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 16:00:33,201 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2024-11-13 16:00:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2024-11-13 16:00:33,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:33,202 INFO L215 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:33,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2024-11-13 16:00:33,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-13 16:00:33,402 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:33,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:33,402 INFO L85 PathProgramCache]: Analyzing trace with hash 622581644, now seen corresponding path program 53 times [2024-11-13 16:00:33,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:33,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246881855] [2024-11-13 16:00:33,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:33,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1028 proven. 457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:35,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:35,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246881855] [2024-11-13 16:00:35,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246881855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:35,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225966364] [2024-11-13 16:00:35,290 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:00:35,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:35,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:35,292 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:35,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2024-11-13 16:00:35,549 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2024-11-13 16:00:35,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:00:35,552 INFO L255 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-13 16:00:35,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:37,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:37,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:39,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225966364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:39,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:39,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 89 [2024-11-13 16:00:39,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130038639] [2024-11-13 16:00:39,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:39,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-13 16:00:39,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:39,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-13 16:00:39,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1774, Invalid=6058, Unknown=0, NotChecked=0, Total=7832 [2024-11-13 16:00:39,245 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 89 states, 89 states have (on average 2.292134831460674) internal successors, (204), 89 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 16:00:39,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:39,739 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2024-11-13 16:00:39,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-13 16:00:39,740 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.292134831460674) internal successors, (204), 89 states have internal predecessors, (204), 0 states have call successors, (0), 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 115 [2024-11-13 16:00:39,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:39,741 INFO L225 Difference]: With dead ends: 205 [2024-11-13 16:00:39,741 INFO L226 Difference]: Without dead ends: 117 [2024-11-13 16:00:39,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 145 SyntacticMatches, 55 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5049 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1774, Invalid=6058, Unknown=0, NotChecked=0, Total=7832 [2024-11-13 16:00:39,744 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:39,744 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 299 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:00:39,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-13 16:00:39,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-13 16:00:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.0172413793103448) internal successors, (118), 116 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 16:00:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions. [2024-11-13 16:00:39,756 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 115 [2024-11-13 16:00:39,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:39,760 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions. [2024-11-13 16:00:39,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.292134831460674) internal successors, (204), 89 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 16:00:39,760 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions. [2024-11-13 16:00:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-13 16:00:39,761 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:39,761 INFO L215 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:39,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2024-11-13 16:00:39,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2024-11-13 16:00:39,962 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:39,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:39,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1274444584, now seen corresponding path program 54 times [2024-11-13 16:00:39,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:39,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011437675] [2024-11-13 16:00:39,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:39,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:39,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 378 proven. 1135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:40,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:40,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011437675] [2024-11-13 16:00:40,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011437675] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:40,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618430687] [2024-11-13 16:00:40,826 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:00:40,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:40,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:40,828 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:40,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2024-11-13 16:00:41,053 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2024-11-13 16:00:41,053 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:00:41,056 INFO L255 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-13 16:00:41,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 406 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:41,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:42,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 406 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:42,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618430687] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:42,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:42,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 34 [2024-11-13 16:00:42,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284429890] [2024-11-13 16:00:42,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:42,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 16:00:42,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:42,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 16:00:42,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=649, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 16:00:42,040 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 16:00:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:42,564 INFO L93 Difference]: Finished difference Result 128 states and 129 transitions. [2024-11-13 16:00:42,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-13 16:00:42,564 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 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 116 [2024-11-13 16:00:42,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:42,565 INFO L225 Difference]: With dead ends: 128 [2024-11-13 16:00:42,565 INFO L226 Difference]: Without dead ends: 126 [2024-11-13 16:00:42,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 201 SyntacticMatches, 56 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1397, Invalid=2385, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 16:00:42,566 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:42,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:00:42,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-13 16:00:42,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2024-11-13 16:00:42,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 0 states have call successors, (0), 0 states 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 16:00:42,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2024-11-13 16:00:42,578 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 116 [2024-11-13 16:00:42,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:42,578 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2024-11-13 16:00:42,579 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states 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 16:00:42,579 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2024-11-13 16:00:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-13 16:00:42,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:42,579 INFO L215 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:42,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2024-11-13 16:00:42,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-11-13 16:00:42,780 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:42,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:42,780 INFO L85 PathProgramCache]: Analyzing trace with hash -527476401, now seen corresponding path program 55 times [2024-11-13 16:00:42,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:42,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319362120] [2024-11-13 16:00:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:42,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:44,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1108 proven. 488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:44,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:44,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319362120] [2024-11-13 16:00:44,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319362120] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:44,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254438178] [2024-11-13 16:00:44,389 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:00:44,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:44,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:44,391 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:44,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2024-11-13 16:00:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:44,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-13 16:00:44,595 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:46,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:46,329 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:47,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254438178] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:47,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:47,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 92 [2024-11-13 16:00:47,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066641233] [2024-11-13 16:00:47,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:47,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2024-11-13 16:00:47,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:47,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2024-11-13 16:00:47,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1895, Invalid=6477, Unknown=0, NotChecked=0, Total=8372 [2024-11-13 16:00:47,737 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 92 states, 92 states have (on average 2.2934782608695654) internal successors, (211), 92 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 16:00:48,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:48,136 INFO L93 Difference]: Finished difference Result 212 states and 214 transitions. [2024-11-13 16:00:48,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-13 16:00:48,137 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.2934782608695654) internal successors, (211), 92 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2024-11-13 16:00:48,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:48,138 INFO L225 Difference]: With dead ends: 212 [2024-11-13 16:00:48,138 INFO L226 Difference]: Without dead ends: 121 [2024-11-13 16:00:48,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 150 SyntacticMatches, 57 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5404 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1895, Invalid=6477, Unknown=0, NotChecked=0, Total=8372 [2024-11-13 16:00:48,139 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:48,139 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 282 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:00:48,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-13 16:00:48,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-11-13 16:00:48,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 120 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 16:00:48,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2024-11-13 16:00:48,153 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 119 [2024-11-13 16:00:48,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:48,154 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2024-11-13 16:00:48,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.2934782608695654) internal successors, (211), 92 states have internal predecessors, (211), 0 states have call successors, (0), 0 states 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 16:00:48,154 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2024-11-13 16:00:48,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-13 16:00:48,155 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:48,155 INFO L215 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:48,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2024-11-13 16:00:48,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-13 16:00:48,359 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:48,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:48,360 INFO L85 PathProgramCache]: Analyzing trace with hash 200724203, now seen corresponding path program 56 times [2024-11-13 16:00:48,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:48,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370602353] [2024-11-13 16:00:48,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:48,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 406 proven. 1219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:49,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:49,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370602353] [2024-11-13 16:00:49,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370602353] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:49,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940053871] [2024-11-13 16:00:49,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:00:49,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:49,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:49,311 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:49,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2024-11-13 16:00:49,538 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:00:49,538 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:00:49,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-13 16:00:49,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 435 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:49,780 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:50,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 435 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:50,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940053871] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:50,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:50,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 35 [2024-11-13 16:00:50,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131673928] [2024-11-13 16:00:50,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:50,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 16:00:50,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:50,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 16:00:50,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=686, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 16:00:50,710 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand has 35 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 16:00:51,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:51,207 INFO L93 Difference]: Finished difference Result 132 states and 133 transitions. [2024-11-13 16:00:51,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-13 16:00:51,207 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 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 120 [2024-11-13 16:00:51,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:51,208 INFO L225 Difference]: With dead ends: 132 [2024-11-13 16:00:51,208 INFO L226 Difference]: Without dead ends: 130 [2024-11-13 16:00:51,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 207 SyntacticMatches, 59 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1909 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1490, Invalid=2542, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 16:00:51,209 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:51,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:00:51,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-13 16:00:51,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2024-11-13 16:00:51,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 0 states have call successors, (0), 0 states 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 16:00:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2024-11-13 16:00:51,222 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 120 [2024-11-13 16:00:51,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:51,222 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2024-11-13 16:00:51,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5428571428571427) internal successors, (124), 35 states have internal predecessors, (124), 0 states have call successors, (0), 0 states 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 16:00:51,222 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2024-11-13 16:00:51,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-13 16:00:51,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:51,223 INFO L215 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:51,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2024-11-13 16:00:51,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-13 16:00:51,423 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:51,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:51,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1185073836, now seen corresponding path program 57 times [2024-11-13 16:00:51,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:51,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287187462] [2024-11-13 16:00:51,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:51,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1191 proven. 520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:53,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:53,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287187462] [2024-11-13 16:00:53,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287187462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:53,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983414760] [2024-11-13 16:00:53,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:00:53,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:53,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:53,137 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:53,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2024-11-13 16:00:53,378 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2024-11-13 16:00:53,378 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:00:53,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-13 16:00:53,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:55,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:55,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:56,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983414760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:56,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:56,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 95 [2024-11-13 16:00:56,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243269506] [2024-11-13 16:00:56,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:56,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2024-11-13 16:00:56,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:56,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2024-11-13 16:00:56,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2020, Invalid=6910, Unknown=0, NotChecked=0, Total=8930 [2024-11-13 16:00:56,601 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand has 95 states, 95 states have (on average 2.294736842105263) internal successors, (218), 95 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 16:00:56,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:00:56,981 INFO L93 Difference]: Finished difference Result 219 states and 221 transitions. [2024-11-13 16:00:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-13 16:00:56,985 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.294736842105263) internal successors, (218), 95 states have internal predecessors, (218), 0 states have call successors, (0), 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 123 [2024-11-13 16:00:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:00:56,986 INFO L225 Difference]: With dead ends: 219 [2024-11-13 16:00:56,986 INFO L226 Difference]: Without dead ends: 125 [2024-11-13 16:00:56,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 155 SyntacticMatches, 59 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5771 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2020, Invalid=6910, Unknown=0, NotChecked=0, Total=8930 [2024-11-13 16:00:56,987 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:00:56,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 313 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:00:56,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-13 16:00:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-13 16:00:57,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.0161290322580645) internal successors, (126), 124 states have internal predecessors, (126), 0 states have call successors, (0), 0 states 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 16:00:57,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions. [2024-11-13 16:00:57,017 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 123 [2024-11-13 16:00:57,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:00:57,017 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions. [2024-11-13 16:00:57,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.294736842105263) internal successors, (218), 95 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 16:00:57,018 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions. [2024-11-13 16:00:57,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-13 16:00:57,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:00:57,018 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1, 1, 1] [2024-11-13 16:00:57,049 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2024-11-13 16:00:57,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-13 16:00:57,219 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:00:57,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:00:57,219 INFO L85 PathProgramCache]: Analyzing trace with hash -539094456, now seen corresponding path program 58 times [2024-11-13 16:00:57,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:00:57,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820699111] [2024-11-13 16:00:57,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:00:57,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:00:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:00:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 435 proven. 1306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:58,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:00:58,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820699111] [2024-11-13 16:00:58,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820699111] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:00:58,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124738607] [2024-11-13 16:00:58,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:00:58,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:00:58,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:00:58,123 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:00:58,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2024-11-13 16:00:58,326 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:00:58,326 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:00:58,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-13 16:00:58,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:00:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:58,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:00:59,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:00:59,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124738607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:00:59,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:00:59,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 36 [2024-11-13 16:00:59,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846043669] [2024-11-13 16:00:59,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:00:59,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-13 16:00:59,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:00:59,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-13 16:00:59,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=724, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 16:00:59,602 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand has 36 states, 36 states have (on average 3.5555555555555554) internal successors, (128), 36 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 16:01:00,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:00,128 INFO L93 Difference]: Finished difference Result 136 states and 137 transitions. [2024-11-13 16:01:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-13 16:01:00,129 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.5555555555555554) internal successors, (128), 36 states have internal predecessors, (128), 0 states have call successors, (0), 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 124 [2024-11-13 16:01:00,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:00,130 INFO L225 Difference]: With dead ends: 136 [2024-11-13 16:01:00,130 INFO L226 Difference]: Without dead ends: 134 [2024-11-13 16:01:00,130 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 215 SyntacticMatches, 60 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2005 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1586, Invalid=2704, Unknown=0, NotChecked=0, Total=4290 [2024-11-13 16:01:00,130 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:00,131 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:01:00,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-13 16:01:00,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 128. [2024-11-13 16:01:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 16:01:00,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2024-11-13 16:01:00,141 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 124 [2024-11-13 16:01:00,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:01:00,141 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2024-11-13 16:01:00,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.5555555555555554) internal successors, (128), 36 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 16:01:00,141 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2024-11-13 16:01:00,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2024-11-13 16:01:00,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:01:00,141 INFO L215 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 1, 1, 1, 1, 1, 1] [2024-11-13 16:01:00,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2024-11-13 16:01:00,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2024-11-13 16:01:00,342 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:01:00,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:01:00,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1275400657, now seen corresponding path program 59 times [2024-11-13 16:01:00,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:01:00,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527494299] [2024-11-13 16:01:00,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:01:00,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:01:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1277 proven. 553 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:02,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:01:02,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527494299] [2024-11-13 16:01:02,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527494299] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:01:02,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766907419] [2024-11-13 16:01:02,196 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:01:02,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:02,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:01:02,198 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:01:02,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2024-11-13 16:01:02,442 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2024-11-13 16:01:02,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:01:02,445 INFO L255 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-13 16:01:02,447 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:01:04,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:04,308 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:01:05,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:05,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766907419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:01:05,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:01:05,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 98 [2024-11-13 16:01:05,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980971986] [2024-11-13 16:01:05,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:01:05,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2024-11-13 16:01:05,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:01:05,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2024-11-13 16:01:05,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2149, Invalid=7357, Unknown=0, NotChecked=0, Total=9506 [2024-11-13 16:01:05,890 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 98 states, 98 states have (on average 2.295918367346939) internal successors, (225), 98 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:01:06,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:06,427 INFO L93 Difference]: Finished difference Result 226 states and 228 transitions. [2024-11-13 16:01:06,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-11-13 16:01:06,428 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.295918367346939) internal successors, (225), 98 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2024-11-13 16:01:06,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:06,429 INFO L225 Difference]: With dead ends: 226 [2024-11-13 16:01:06,429 INFO L226 Difference]: Without dead ends: 129 [2024-11-13 16:01:06,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 160 SyntacticMatches, 61 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6150 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2149, Invalid=7357, Unknown=0, NotChecked=0, Total=9506 [2024-11-13 16:01:06,430 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:06,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 420 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:01:06,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-13 16:01:06,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2024-11-13 16:01:06,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.015625) internal successors, (130), 128 states have internal predecessors, (130), 0 states have call successors, (0), 0 states 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 16:01:06,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2024-11-13 16:01:06,452 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 127 [2024-11-13 16:01:06,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:01:06,452 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2024-11-13 16:01:06,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 2.295918367346939) internal successors, (225), 98 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:01:06,452 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2024-11-13 16:01:06,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-13 16:01:06,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:01:06,453 INFO L215 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1, 1, 1] [2024-11-13 16:01:06,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2024-11-13 16:01:06,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:06,654 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:01:06,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:01:06,654 INFO L85 PathProgramCache]: Analyzing trace with hash 684787659, now seen corresponding path program 60 times [2024-11-13 16:01:06,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:01:06,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979017570] [2024-11-13 16:01:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:01:06,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:01:06,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:07,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 465 proven. 1396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:07,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:01:07,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979017570] [2024-11-13 16:01:07,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979017570] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:01:07,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995132855] [2024-11-13 16:01:07,720 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:01:07,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:07,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:01:07,721 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:01:07,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2024-11-13 16:01:07,996 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2024-11-13 16:01:07,996 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:01:07,999 INFO L255 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-13 16:01:08,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:01:08,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 496 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:08,161 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:01:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 496 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:09,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995132855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:01:09,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:01:09,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 37 [2024-11-13 16:01:09,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260262281] [2024-11-13 16:01:09,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:01:09,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 16:01:09,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:01:09,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 16:01:09,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=763, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 16:01:09,401 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand has 37 states, 37 states have (on average 3.5675675675675675) internal successors, (132), 37 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 16:01:10,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:10,167 INFO L93 Difference]: Finished difference Result 140 states and 141 transitions. [2024-11-13 16:01:10,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-13 16:01:10,168 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.5675675675675675) internal successors, (132), 37 states have internal predecessors, (132), 0 states have call successors, (0), 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 128 [2024-11-13 16:01:10,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:10,169 INFO L225 Difference]: With dead ends: 140 [2024-11-13 16:01:10,169 INFO L226 Difference]: Without dead ends: 138 [2024-11-13 16:01:10,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 222 SyntacticMatches, 62 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2134 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1685, Invalid=2871, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 16:01:10,170 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:10,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:01:10,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-13 16:01:10,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 132. [2024-11-13 16:01:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.015267175572519) internal successors, (133), 131 states have internal predecessors, (133), 0 states have call successors, (0), 0 states 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 16:01:10,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2024-11-13 16:01:10,178 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 128 [2024-11-13 16:01:10,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:01:10,178 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2024-11-13 16:01:10,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.5675675675675675) internal successors, (132), 37 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 16:01:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2024-11-13 16:01:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-13 16:01:10,179 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:01:10,179 INFO L215 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 1, 1, 1, 1, 1, 1] [2024-11-13 16:01:10,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2024-11-13 16:01:10,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2024-11-13 16:01:10,379 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:01:10,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:01:10,380 INFO L85 PathProgramCache]: Analyzing trace with hash -580688436, now seen corresponding path program 61 times [2024-11-13 16:01:10,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:01:10,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826157196] [2024-11-13 16:01:10,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:01:10,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:01:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:12,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1366 proven. 587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:12,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:01:12,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826157196] [2024-11-13 16:01:12,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826157196] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:01:12,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967514760] [2024-11-13 16:01:12,366 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:01:12,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:12,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:01:12,368 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:01:12,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2024-11-13 16:01:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:12,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-13 16:01:12,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:01:14,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:14,659 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:01:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:16,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967514760] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:01:16,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:01:16,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 101 [2024-11-13 16:01:16,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765087233] [2024-11-13 16:01:16,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:01:16,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2024-11-13 16:01:16,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:01:16,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2024-11-13 16:01:16,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2282, Invalid=7818, Unknown=0, NotChecked=0, Total=10100 [2024-11-13 16:01:16,211 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand has 101 states, 101 states have (on average 2.297029702970297) internal successors, (232), 101 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:01:16,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:16,744 INFO L93 Difference]: Finished difference Result 233 states and 235 transitions. [2024-11-13 16:01:16,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-13 16:01:16,744 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.297029702970297) internal successors, (232), 101 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2024-11-13 16:01:16,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:16,745 INFO L225 Difference]: With dead ends: 233 [2024-11-13 16:01:16,745 INFO L226 Difference]: Without dead ends: 133 [2024-11-13 16:01:16,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 165 SyntacticMatches, 63 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6541 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2282, Invalid=7818, Unknown=0, NotChecked=0, Total=10100 [2024-11-13 16:01:16,746 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:16,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 442 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:01:16,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-13 16:01:16,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-13 16:01:16,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 132 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 16:01:16,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 134 transitions. [2024-11-13 16:01:16,757 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 134 transitions. Word has length 131 [2024-11-13 16:01:16,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:01:16,757 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 134 transitions. [2024-11-13 16:01:16,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 2.297029702970297) internal successors, (232), 101 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:01:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 134 transitions. [2024-11-13 16:01:16,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-13 16:01:16,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:01:16,758 INFO L215 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1, 1, 1] [2024-11-13 16:01:16,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2024-11-13 16:01:16,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2024-11-13 16:01:16,959 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:01:16,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:01:16,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1612403048, now seen corresponding path program 62 times [2024-11-13 16:01:16,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:01:16,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309812882] [2024-11-13 16:01:16,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:01:16,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:01:16,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:18,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 496 proven. 1489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:18,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:01:18,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309812882] [2024-11-13 16:01:18,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309812882] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:01:18,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791152590] [2024-11-13 16:01:18,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:01:18,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:18,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:01:18,012 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:01:18,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2024-11-13 16:01:18,231 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:01:18,231 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:01:18,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-13 16:01:18,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:01:18,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 528 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:18,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:01:19,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 528 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:19,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791152590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:01:19,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:01:19,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 38 [2024-11-13 16:01:19,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229696068] [2024-11-13 16:01:19,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:01:19,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-13 16:01:19,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:01:19,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-13 16:01:19,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=803, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 16:01:19,550 INFO L87 Difference]: Start difference. First operand 133 states and 134 transitions. Second operand has 38 states, 38 states have (on average 3.5789473684210527) internal successors, (136), 38 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 16:01:20,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:20,194 INFO L93 Difference]: Finished difference Result 144 states and 145 transitions. [2024-11-13 16:01:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-11-13 16:01:20,194 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.5789473684210527) internal successors, (136), 38 states have internal predecessors, (136), 0 states have call successors, (0), 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 132 [2024-11-13 16:01:20,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:20,195 INFO L225 Difference]: With dead ends: 144 [2024-11-13 16:01:20,195 INFO L226 Difference]: Without dead ends: 142 [2024-11-13 16:01:20,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 228 SyntacticMatches, 65 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2299 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1787, Invalid=3043, Unknown=0, NotChecked=0, Total=4830 [2024-11-13 16:01:20,196 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:20,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 37 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:01:20,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-13 16:01:20,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 136. [2024-11-13 16:01:20,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 135 states have internal predecessors, (137), 0 states have call successors, (0), 0 states 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 16:01:20,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2024-11-13 16:01:20,205 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 132 [2024-11-13 16:01:20,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:01:20,205 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2024-11-13 16:01:20,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.5789473684210527) internal successors, (136), 38 states have internal predecessors, (136), 0 states have call successors, (0), 0 states 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 16:01:20,205 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2024-11-13 16:01:20,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-13 16:01:20,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:01:20,206 INFO L215 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 1, 1, 1, 1, 1, 1] [2024-11-13 16:01:20,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2024-11-13 16:01:20,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:20,407 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:01:20,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:01:20,407 INFO L85 PathProgramCache]: Analyzing trace with hash 189782799, now seen corresponding path program 63 times [2024-11-13 16:01:20,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:01:20,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031180040] [2024-11-13 16:01:20,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:01:20,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:01:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:22,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1458 proven. 622 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:22,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:01:22,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031180040] [2024-11-13 16:01:22,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031180040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:01:22,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211160106] [2024-11-13 16:01:22,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:01:22,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:22,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:01:22,447 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:01:22,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2024-11-13 16:01:22,738 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2024-11-13 16:01:22,738 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:01:22,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-13 16:01:22,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:01:24,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:24,992 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:01:26,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:26,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211160106] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:01:26,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:01:26,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69, 69] total 104 [2024-11-13 16:01:26,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441403779] [2024-11-13 16:01:26,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:01:26,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2024-11-13 16:01:26,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:01:26,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2024-11-13 16:01:26,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2419, Invalid=8293, Unknown=0, NotChecked=0, Total=10712 [2024-11-13 16:01:26,792 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 104 states, 104 states have (on average 2.298076923076923) internal successors, (239), 104 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:01:27,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:27,426 INFO L93 Difference]: Finished difference Result 240 states and 242 transitions. [2024-11-13 16:01:27,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-11-13 16:01:27,427 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.298076923076923) internal successors, (239), 104 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2024-11-13 16:01:27,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:27,428 INFO L225 Difference]: With dead ends: 240 [2024-11-13 16:01:27,428 INFO L226 Difference]: Without dead ends: 137 [2024-11-13 16:01:27,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 170 SyntacticMatches, 65 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6944 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2419, Invalid=8293, Unknown=0, NotChecked=0, Total=10712 [2024-11-13 16:01:27,429 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:27,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 476 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:01:27,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-13 16:01:27,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-11-13 16:01:27,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 136 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 16:01:27,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2024-11-13 16:01:27,443 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 135 [2024-11-13 16:01:27,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:01:27,444 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2024-11-13 16:01:27,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.298076923076923) internal successors, (239), 104 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:01:27,444 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2024-11-13 16:01:27,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-13 16:01:27,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:01:27,445 INFO L215 NwaCegarLoop]: trace histogram [33, 33, 32, 32, 1, 1, 1, 1, 1, 1] [2024-11-13 16:01:27,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2024-11-13 16:01:27,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:27,645 INFO L396 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:01:27,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:01:27,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1387305131, now seen corresponding path program 64 times [2024-11-13 16:01:27,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:01:27,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883518846] [2024-11-13 16:01:27,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:01:27,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:01:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:28,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 528 proven. 1585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:28,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:01:28,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883518846] [2024-11-13 16:01:28,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883518846] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:01:28,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463729995] [2024-11-13 16:01:28,885 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:01:28,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:28,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:01:28,888 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:01:28,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2024-11-13 16:01:29,172 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:01:29,172 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:01:29,176 INFO L255 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-13 16:01:29,178 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:01:29,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 561 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:29,457 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:01:30,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2113 backedges. 561 proven. 1552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:30,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463729995] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:01:30,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:01:30,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 39 [2024-11-13 16:01:30,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532325688] [2024-11-13 16:01:30,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:01:30,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 16:01:30,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:01:30,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 16:01:30,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=638, Invalid=844, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 16:01:30,769 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand has 39 states, 39 states have (on average 3.58974358974359) internal successors, (140), 39 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 16:01:31,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:31,360 INFO L93 Difference]: Finished difference Result 148 states and 149 transitions. [2024-11-13 16:01:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-13 16:01:31,360 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.58974358974359) internal successors, (140), 39 states have internal predecessors, (140), 0 states have call successors, (0), 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 136 [2024-11-13 16:01:31,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:31,361 INFO L225 Difference]: With dead ends: 148 [2024-11-13 16:01:31,361 INFO L226 Difference]: Without dead ends: 146 [2024-11-13 16:01:31,361 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 236 SyntacticMatches, 66 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2404 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1892, Invalid=3220, Unknown=0, NotChecked=0, Total=5112 [2024-11-13 16:01:31,362 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:31,362 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:01:31,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-13 16:01:31,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2024-11-13 16:01:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.014388489208633) internal successors, (141), 139 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 16:01:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2024-11-13 16:01:31,377 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 136 [2024-11-13 16:01:31,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:01:31,377 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2024-11-13 16:01:31,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.58974358974359) internal successors, (140), 39 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 16:01:31,377 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2024-11-13 16:01:31,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-13 16:01:31,378 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:01:31,378 INFO L215 NwaCegarLoop]: trace histogram [34, 33, 33, 33, 1, 1, 1, 1, 1, 1] [2024-11-13 16:01:31,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2024-11-13 16:01:31,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:31,578 INFO L396 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:01:31,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:01:31,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1258313492, now seen corresponding path program 65 times [2024-11-13 16:01:31,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:01:31,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014263157] [2024-11-13 16:01:31,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:01:31,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:01:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:33,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1553 proven. 658 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:33,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:01:33,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014263157] [2024-11-13 16:01:33,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014263157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:01:33,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141782036] [2024-11-13 16:01:33,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:01:33,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:33,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:01:33,830 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:01:33,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2024-11-13 16:01:34,114 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2024-11-13 16:01:34,114 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:01:34,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-13 16:01:34,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:01:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1650 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:36,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:01:38,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 1650 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:38,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141782036] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:01:38,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:01:38,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71, 71] total 107 [2024-11-13 16:01:38,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172926042] [2024-11-13 16:01:38,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:01:38,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2024-11-13 16:01:38,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:01:38,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2024-11-13 16:01:38,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2560, Invalid=8782, Unknown=0, NotChecked=0, Total=11342 [2024-11-13 16:01:38,196 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand has 107 states, 107 states have (on average 2.2990654205607477) internal successors, (246), 107 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 16:01:38,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:38,795 INFO L93 Difference]: Finished difference Result 247 states and 249 transitions. [2024-11-13 16:01:38,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-13 16:01:38,796 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.2990654205607477) internal successors, (246), 107 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) Word has length 139 [2024-11-13 16:01:38,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:38,797 INFO L225 Difference]: With dead ends: 247 [2024-11-13 16:01:38,797 INFO L226 Difference]: Without dead ends: 141 [2024-11-13 16:01:38,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 175 SyntacticMatches, 67 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7359 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2560, Invalid=8782, Unknown=0, NotChecked=0, Total=11342 [2024-11-13 16:01:38,798 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:38,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 537 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:01:38,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-13 16:01:38,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-13 16:01:38,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.0142857142857142) internal successors, (142), 140 states have internal predecessors, (142), 0 states have call successors, (0), 0 states 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 16:01:38,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 142 transitions. [2024-11-13 16:01:38,824 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 142 transitions. Word has length 139 [2024-11-13 16:01:38,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:01:38,824 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 142 transitions. [2024-11-13 16:01:38,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 2.2990654205607477) internal successors, (246), 107 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 16:01:38,824 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 142 transitions. [2024-11-13 16:01:38,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-13 16:01:38,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:01:38,824 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 1, 1, 1, 1, 1, 1] [2024-11-13 16:01:38,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2024-11-13 16:01:39,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:39,025 INFO L396 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:01:39,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:01:39,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1135593336, now seen corresponding path program 66 times [2024-11-13 16:01:39,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:01:39,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777589230] [2024-11-13 16:01:39,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:01:39,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:01:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 561 proven. 1684 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:40,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:01:40,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777589230] [2024-11-13 16:01:40,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777589230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:01:40,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8570383] [2024-11-13 16:01:40,349 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:01:40,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:40,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:01:40,351 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:01:40,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2024-11-13 16:01:40,654 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2024-11-13 16:01:40,654 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:01:40,657 INFO L255 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-13 16:01:40,659 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:01:40,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 595 proven. 1650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:40,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:01:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2245 backedges. 595 proven. 1650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:42,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8570383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:01:42,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:01:42,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 40 [2024-11-13 16:01:42,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083875698] [2024-11-13 16:01:42,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:01:42,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-13 16:01:42,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:01:42,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-13 16:01:42,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=674, Invalid=886, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 16:01:42,005 INFO L87 Difference]: Start difference. First operand 141 states and 142 transitions. Second operand has 40 states, 40 states have (on average 3.6) internal successors, (144), 40 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 16:01:42,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:42,647 INFO L93 Difference]: Finished difference Result 152 states and 153 transitions. [2024-11-13 16:01:42,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2024-11-13 16:01:42,648 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 3.6) internal successors, (144), 40 states have internal predecessors, (144), 0 states have call successors, (0), 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 140 [2024-11-13 16:01:42,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:42,649 INFO L225 Difference]: With dead ends: 152 [2024-11-13 16:01:42,649 INFO L226 Difference]: Without dead ends: 150 [2024-11-13 16:01:42,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 243 SyntacticMatches, 68 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2545 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2000, Invalid=3402, Unknown=0, NotChecked=0, Total=5402 [2024-11-13 16:01:42,650 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:42,650 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:01:42,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-13 16:01:42,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 144. [2024-11-13 16:01:42,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.013986013986014) internal successors, (145), 143 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 16:01:42,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 145 transitions. [2024-11-13 16:01:42,659 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 145 transitions. Word has length 140 [2024-11-13 16:01:42,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:01:42,659 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 145 transitions. [2024-11-13 16:01:42,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 3.6) internal successors, (144), 40 states have internal predecessors, (144), 0 states have call successors, (0), 0 states 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 16:01:42,659 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 145 transitions. [2024-11-13 16:01:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-13 16:01:42,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:01:42,660 INFO L215 NwaCegarLoop]: trace histogram [35, 34, 34, 34, 1, 1, 1, 1, 1, 1] [2024-11-13 16:01:42,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2024-11-13 16:01:42,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:42,860 INFO L396 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:01:42,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:01:42,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1001136111, now seen corresponding path program 67 times [2024-11-13 16:01:42,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:01:42,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879065019] [2024-11-13 16:01:42,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:01:42,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:01:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1651 proven. 695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:45,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:01:45,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879065019] [2024-11-13 16:01:45,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879065019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:01:45,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354139293] [2024-11-13 16:01:45,160 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:01:45,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:45,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:01:45,162 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:01:45,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2024-11-13 16:01:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:45,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-13 16:01:45,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:01:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1751 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:47,814 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:01:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 1751 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:49,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354139293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:01:49,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:01:49,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73, 73] total 110 [2024-11-13 16:01:49,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487184210] [2024-11-13 16:01:49,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:01:49,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2024-11-13 16:01:49,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:01:49,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2024-11-13 16:01:49,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2705, Invalid=9285, Unknown=0, NotChecked=0, Total=11990 [2024-11-13 16:01:49,640 INFO L87 Difference]: Start difference. First operand 144 states and 145 transitions. Second operand has 110 states, 110 states have (on average 2.3) internal successors, (253), 110 states have internal predecessors, (253), 0 states have call successors, (0), 0 states 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 16:01:50,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:50,168 INFO L93 Difference]: Finished difference Result 254 states and 256 transitions. [2024-11-13 16:01:50,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-13 16:01:50,169 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.3) internal successors, (253), 110 states have internal predecessors, (253), 0 states have call successors, (0), 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 143 [2024-11-13 16:01:50,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:50,170 INFO L225 Difference]: With dead ends: 254 [2024-11-13 16:01:50,170 INFO L226 Difference]: Without dead ends: 145 [2024-11-13 16:01:50,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 180 SyntacticMatches, 69 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7786 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=2705, Invalid=9285, Unknown=0, NotChecked=0, Total=11990 [2024-11-13 16:01:50,171 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:50,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 364 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:01:50,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-13 16:01:50,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2024-11-13 16:01:50,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0138888888888888) internal successors, (146), 144 states have internal predecessors, (146), 0 states have call successors, (0), 0 states 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 16:01:50,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2024-11-13 16:01:50,187 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 143 [2024-11-13 16:01:50,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:01:50,188 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2024-11-13 16:01:50,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 110 states have (on average 2.3) internal successors, (253), 110 states have internal predecessors, (253), 0 states have call successors, (0), 0 states 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 16:01:50,188 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2024-11-13 16:01:50,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-13 16:01:50,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:01:50,188 INFO L215 NwaCegarLoop]: trace histogram [35, 35, 34, 34, 1, 1, 1, 1, 1, 1] [2024-11-13 16:01:50,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2024-11-13 16:01:50,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:50,389 INFO L396 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:01:50,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:01:50,389 INFO L85 PathProgramCache]: Analyzing trace with hash 45318539, now seen corresponding path program 68 times [2024-11-13 16:01:50,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:01:50,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404341864] [2024-11-13 16:01:50,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:01:50,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:01:50,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 595 proven. 1786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:51,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:01:51,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404341864] [2024-11-13 16:01:51,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404341864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:01:51,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371349216] [2024-11-13 16:01:51,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:01:51,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:51,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:01:51,606 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:01:51,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2024-11-13 16:01:51,849 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:01:51,849 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:01:51,852 INFO L255 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-13 16:01:51,854 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:01:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 630 proven. 1751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:52,065 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:01:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 2381 backedges. 630 proven. 1751 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:53,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371349216] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:01:53,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:01:53,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 41 [2024-11-13 16:01:53,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560946866] [2024-11-13 16:01:53,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:01:53,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 16:01:53,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:01:53,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 16:01:53,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=711, Invalid=929, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 16:01:53,286 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand has 41 states, 41 states have (on average 3.6097560975609757) internal successors, (148), 41 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 16:01:53,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:01:53,944 INFO L93 Difference]: Finished difference Result 156 states and 157 transitions. [2024-11-13 16:01:53,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-13 16:01:53,945 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.6097560975609757) internal successors, (148), 41 states have internal predecessors, (148), 0 states have call successors, (0), 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 144 [2024-11-13 16:01:53,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:01:53,946 INFO L225 Difference]: With dead ends: 156 [2024-11-13 16:01:53,946 INFO L226 Difference]: Without dead ends: 154 [2024-11-13 16:01:53,946 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 249 SyntacticMatches, 71 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2725 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2111, Invalid=3589, Unknown=0, NotChecked=0, Total=5700 [2024-11-13 16:01:53,947 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:01:53,947 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 31 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:01:53,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-13 16:01:53,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 148. [2024-11-13 16:01:53,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 147 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 16:01:53,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2024-11-13 16:01:53,963 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 144 [2024-11-13 16:01:53,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:01:53,963 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2024-11-13 16:01:53,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.6097560975609757) internal successors, (148), 41 states have internal predecessors, (148), 0 states have call successors, (0), 0 states 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 16:01:53,963 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2024-11-13 16:01:53,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-13 16:01:53,964 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:01:53,964 INFO L215 NwaCegarLoop]: trace histogram [36, 35, 35, 35, 1, 1, 1, 1, 1, 1] [2024-11-13 16:01:53,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2024-11-13 16:01:54,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2024-11-13 16:01:54,164 INFO L396 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:01:54,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:01:54,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1469682700, now seen corresponding path program 69 times [2024-11-13 16:01:54,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:01:54,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077277571] [2024-11-13 16:01:54,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:01:54,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:01:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:01:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 1752 proven. 733 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:56,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:01:56,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077277571] [2024-11-13 16:01:56,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077277571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:01:56,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016887340] [2024-11-13 16:01:56,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:01:56,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:01:56,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:01:56,679 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:01:56,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2024-11-13 16:01:57,051 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 36 check-sat command(s) [2024-11-13 16:01:57,051 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:01:57,058 INFO L255 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-13 16:01:57,061 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:01:59,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 1855 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:01:59,606 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:02:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 1855 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:01,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016887340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:02:01,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:02:01,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75, 75] total 113 [2024-11-13 16:02:01,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760923575] [2024-11-13 16:02:01,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:02:01,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-11-13 16:02:01,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:01,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-11-13 16:02:01,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2854, Invalid=9802, Unknown=0, NotChecked=0, Total=12656 [2024-11-13 16:02:01,499 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand has 113 states, 113 states have (on average 2.3008849557522124) internal successors, (260), 113 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 16:02:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:01,999 INFO L93 Difference]: Finished difference Result 261 states and 263 transitions. [2024-11-13 16:02:02,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-13 16:02:02,000 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.3008849557522124) internal successors, (260), 113 states have internal predecessors, (260), 0 states have call successors, (0), 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 147 [2024-11-13 16:02:02,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:02,001 INFO L225 Difference]: With dead ends: 261 [2024-11-13 16:02:02,001 INFO L226 Difference]: Without dead ends: 149 [2024-11-13 16:02:02,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 185 SyntacticMatches, 71 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8225 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=2854, Invalid=9802, Unknown=0, NotChecked=0, Total=12656 [2024-11-13 16:02:02,002 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:02,002 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 421 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:02:02,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-13 16:02:02,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2024-11-13 16:02:02,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.0135135135135136) internal successors, (150), 148 states have internal predecessors, (150), 0 states have call successors, (0), 0 states 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 16:02:02,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 150 transitions. [2024-11-13 16:02:02,018 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 150 transitions. Word has length 147 [2024-11-13 16:02:02,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:02,019 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 150 transitions. [2024-11-13 16:02:02,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 2.3008849557522124) internal successors, (260), 113 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 16:02:02,019 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 150 transitions. [2024-11-13 16:02:02,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2024-11-13 16:02:02,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:02,020 INFO L215 NwaCegarLoop]: trace histogram [36, 36, 35, 35, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:02,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2024-11-13 16:02:02,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:02,220 INFO L396 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:02,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:02,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1566652504, now seen corresponding path program 70 times [2024-11-13 16:02:02,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:02,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655203877] [2024-11-13 16:02:02,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:02,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:03,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 630 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:03,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:03,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655203877] [2024-11-13 16:02:03,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655203877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:02:03,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390174744] [2024-11-13 16:02:03,596 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:02:03,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:03,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:02:03,598 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:02:03,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2024-11-13 16:02:03,858 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:02:03,859 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:02:03,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-13 16:02:03,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:02:04,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 666 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:04,056 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:02:05,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2521 backedges. 666 proven. 1855 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:05,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390174744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:02:05,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:02:05,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 42 [2024-11-13 16:02:05,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131812231] [2024-11-13 16:02:05,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:02:05,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 16:02:05,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:05,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 16:02:05,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=749, Invalid=973, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 16:02:05,378 INFO L87 Difference]: Start difference. First operand 149 states and 150 transitions. Second operand has 42 states, 42 states have (on average 3.619047619047619) internal successors, (152), 42 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 16:02:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:06,146 INFO L93 Difference]: Finished difference Result 160 states and 161 transitions. [2024-11-13 16:02:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-13 16:02:06,147 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 3.619047619047619) internal successors, (152), 42 states have internal predecessors, (152), 0 states have call successors, (0), 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 148 [2024-11-13 16:02:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:06,148 INFO L225 Difference]: With dead ends: 160 [2024-11-13 16:02:06,148 INFO L226 Difference]: Without dead ends: 158 [2024-11-13 16:02:06,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 257 SyntacticMatches, 72 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2839 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2225, Invalid=3781, Unknown=0, NotChecked=0, Total=6006 [2024-11-13 16:02:06,149 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:06,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 28 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:02:06,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-13 16:02:06,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2024-11-13 16:02:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0132450331125828) internal successors, (153), 151 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:02:06,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2024-11-13 16:02:06,159 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 148 [2024-11-13 16:02:06,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:06,159 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2024-11-13 16:02:06,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 3.619047619047619) internal successors, (152), 42 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 16:02:06,160 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2024-11-13 16:02:06,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-13 16:02:06,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:06,160 INFO L215 NwaCegarLoop]: trace histogram [37, 36, 36, 36, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:06,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2024-11-13 16:02:06,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:06,362 INFO L396 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:06,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:06,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1269677263, now seen corresponding path program 71 times [2024-11-13 16:02:06,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:06,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876635345] [2024-11-13 16:02:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:06,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:06,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:09,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1856 proven. 772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:09,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:09,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876635345] [2024-11-13 16:02:09,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876635345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:02:09,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533961438] [2024-11-13 16:02:09,173 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:02:09,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:09,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:02:09,174 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:02:09,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2024-11-13 16:02:09,524 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2024-11-13 16:02:09,524 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:02:09,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-13 16:02:09,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:02:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1962 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:12,345 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:02:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 1962 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:14,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533961438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:02:14,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:02:14,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77, 77] total 116 [2024-11-13 16:02:14,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750542061] [2024-11-13 16:02:14,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:02:14,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2024-11-13 16:02:14,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:14,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2024-11-13 16:02:14,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3007, Invalid=10333, Unknown=0, NotChecked=0, Total=13340 [2024-11-13 16:02:14,390 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 116 states, 116 states have (on average 2.3017241379310347) internal successors, (267), 116 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 16:02:14,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:14,958 INFO L93 Difference]: Finished difference Result 268 states and 270 transitions. [2024-11-13 16:02:14,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2024-11-13 16:02:14,959 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.3017241379310347) internal successors, (267), 116 states have internal predecessors, (267), 0 states have call successors, (0), 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 151 [2024-11-13 16:02:14,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:14,960 INFO L225 Difference]: With dead ends: 268 [2024-11-13 16:02:14,960 INFO L226 Difference]: Without dead ends: 153 [2024-11-13 16:02:14,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 190 SyntacticMatches, 73 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8676 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=3007, Invalid=10333, Unknown=0, NotChecked=0, Total=13340 [2024-11-13 16:02:14,961 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:14,961 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 486 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:02:14,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-13 16:02:14,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-11-13 16:02:14,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.013157894736842) internal successors, (154), 152 states have internal predecessors, (154), 0 states have call successors, (0), 0 states 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 16:02:14,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2024-11-13 16:02:14,975 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 151 [2024-11-13 16:02:14,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:14,975 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2024-11-13 16:02:14,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 116 states have (on average 2.3017241379310347) internal successors, (267), 116 states have internal predecessors, (267), 0 states have call successors, (0), 0 states 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 16:02:14,975 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2024-11-13 16:02:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-13 16:02:14,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:14,976 INFO L215 NwaCegarLoop]: trace histogram [37, 37, 36, 36, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:14,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2024-11-13 16:02:15,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:15,176 INFO L396 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:15,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:15,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1668792939, now seen corresponding path program 72 times [2024-11-13 16:02:15,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:15,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154391101] [2024-11-13 16:02:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:15,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:16,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 666 proven. 1999 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:16,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:16,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154391101] [2024-11-13 16:02:16,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154391101] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:02:16,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008256599] [2024-11-13 16:02:16,493 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:02:16,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:16,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:02:16,494 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:02:16,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2024-11-13 16:02:16,823 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2024-11-13 16:02:16,823 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:02:16,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-13 16:02:16,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:02:17,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 703 proven. 1962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:17,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:02:18,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2665 backedges. 703 proven. 1962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:18,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008256599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:02:18,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:02:18,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 43 [2024-11-13 16:02:18,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444534073] [2024-11-13 16:02:18,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:02:18,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-13 16:02:18,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:18,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-13 16:02:18,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=788, Invalid=1018, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 16:02:18,578 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand has 43 states, 43 states have (on average 3.627906976744186) internal successors, (156), 43 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 16:02:19,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:19,556 INFO L93 Difference]: Finished difference Result 164 states and 165 transitions. [2024-11-13 16:02:19,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-13 16:02:19,557 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.627906976744186) internal successors, (156), 43 states have internal predecessors, (156), 0 states have call successors, (0), 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 152 [2024-11-13 16:02:19,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:19,558 INFO L225 Difference]: With dead ends: 164 [2024-11-13 16:02:19,558 INFO L226 Difference]: Without dead ends: 162 [2024-11-13 16:02:19,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 264 SyntacticMatches, 74 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2992 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2342, Invalid=3978, Unknown=0, NotChecked=0, Total=6320 [2024-11-13 16:02:19,559 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:19,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:02:19,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-13 16:02:19,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 156. [2024-11-13 16:02:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 155 states have internal predecessors, (157), 0 states have call successors, (0), 0 states 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 16:02:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2024-11-13 16:02:19,588 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 152 [2024-11-13 16:02:19,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:19,589 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2024-11-13 16:02:19,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.627906976744186) internal successors, (156), 43 states have internal predecessors, (156), 0 states have call successors, (0), 0 states 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 16:02:19,589 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2024-11-13 16:02:19,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-13 16:02:19,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:19,591 INFO L215 NwaCegarLoop]: trace histogram [38, 37, 37, 37, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:19,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2024-11-13 16:02:19,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:19,791 INFO L396 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:19,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:19,792 INFO L85 PathProgramCache]: Analyzing trace with hash 768812844, now seen corresponding path program 73 times [2024-11-13 16:02:19,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:19,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340879163] [2024-11-13 16:02:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:19,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 1963 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:22,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:22,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340879163] [2024-11-13 16:02:22,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340879163] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:02:22,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902758615] [2024-11-13 16:02:22,496 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:02:22,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:22,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:02:22,498 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:02:22,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2024-11-13 16:02:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:22,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 78 conjuncts are in the unsatisfiable core [2024-11-13 16:02:22,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:02:25,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 2072 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:25,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:02:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 2072 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:27,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902758615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:02:27,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:02:27,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79, 79] total 119 [2024-11-13 16:02:27,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031626499] [2024-11-13 16:02:27,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:02:27,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2024-11-13 16:02:27,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:27,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2024-11-13 16:02:27,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3164, Invalid=10878, Unknown=0, NotChecked=0, Total=14042 [2024-11-13 16:02:27,560 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand has 119 states, 119 states have (on average 2.302521008403361) internal successors, (274), 119 states have internal predecessors, (274), 0 states have call successors, (0), 0 states 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 16:02:28,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:28,138 INFO L93 Difference]: Finished difference Result 275 states and 277 transitions. [2024-11-13 16:02:28,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-11-13 16:02:28,138 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.302521008403361) internal successors, (274), 119 states have internal predecessors, (274), 0 states have call successors, (0), 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 155 [2024-11-13 16:02:28,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:28,139 INFO L225 Difference]: With dead ends: 275 [2024-11-13 16:02:28,139 INFO L226 Difference]: Without dead ends: 157 [2024-11-13 16:02:28,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 195 SyntacticMatches, 75 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9139 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=3164, Invalid=10878, Unknown=0, NotChecked=0, Total=14042 [2024-11-13 16:02:28,140 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:28,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 488 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:02:28,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-13 16:02:28,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-11-13 16:02:28,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 156 states have internal predecessors, (158), 0 states have call successors, (0), 0 states 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 16:02:28,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 158 transitions. [2024-11-13 16:02:28,153 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 158 transitions. Word has length 155 [2024-11-13 16:02:28,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:28,153 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 158 transitions. [2024-11-13 16:02:28,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.302521008403361) internal successors, (274), 119 states have internal predecessors, (274), 0 states have call successors, (0), 0 states 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 16:02:28,153 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 158 transitions. [2024-11-13 16:02:28,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-13 16:02:28,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:28,154 INFO L215 NwaCegarLoop]: trace histogram [38, 38, 37, 37, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:28,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2024-11-13 16:02:28,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2024-11-13 16:02:28,354 INFO L396 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:28,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:28,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1616314680, now seen corresponding path program 74 times [2024-11-13 16:02:28,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:28,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238880887] [2024-11-13 16:02:28,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:28,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 703 proven. 2110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:29,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:29,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238880887] [2024-11-13 16:02:29,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238880887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:02:29,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219970838] [2024-11-13 16:02:29,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:02:29,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:29,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:02:29,739 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:02:29,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2024-11-13 16:02:30,013 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:02:30,014 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:02:30,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-13 16:02:30,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:02:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 741 proven. 2072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:30,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:02:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2813 backedges. 741 proven. 2072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:31,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219970838] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:02:31,656 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:02:31,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 44 [2024-11-13 16:02:31,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913911052] [2024-11-13 16:02:31,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:02:31,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-13 16:02:31,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:31,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-13 16:02:31,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=828, Invalid=1064, Unknown=0, NotChecked=0, Total=1892 [2024-11-13 16:02:31,658 INFO L87 Difference]: Start difference. First operand 157 states and 158 transitions. Second operand has 44 states, 44 states have (on average 3.6363636363636362) internal successors, (160), 44 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 16:02:32,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:32,436 INFO L93 Difference]: Finished difference Result 168 states and 169 transitions. [2024-11-13 16:02:32,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-11-13 16:02:32,436 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.6363636363636362) internal successors, (160), 44 states have internal predecessors, (160), 0 states have call successors, (0), 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 156 [2024-11-13 16:02:32,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:32,437 INFO L225 Difference]: With dead ends: 168 [2024-11-13 16:02:32,437 INFO L226 Difference]: Without dead ends: 166 [2024-11-13 16:02:32,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 270 SyntacticMatches, 77 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3187 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2462, Invalid=4180, Unknown=0, NotChecked=0, Total=6642 [2024-11-13 16:02:32,438 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:32,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 38 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:02:32,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-13 16:02:32,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 160. [2024-11-13 16:02:32,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 159 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 16:02:32,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2024-11-13 16:02:32,456 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 156 [2024-11-13 16:02:32,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:32,456 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2024-11-13 16:02:32,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.6363636363636362) internal successors, (160), 44 states have internal predecessors, (160), 0 states have call successors, (0), 0 states 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 16:02:32,456 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2024-11-13 16:02:32,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-13 16:02:32,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:32,457 INFO L215 NwaCegarLoop]: trace histogram [39, 38, 38, 38, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:32,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2024-11-13 16:02:32,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2024-11-13 16:02:32,658 INFO L396 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:32,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:32,659 INFO L85 PathProgramCache]: Analyzing trace with hash -747458129, now seen corresponding path program 75 times [2024-11-13 16:02:32,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:32,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280022598] [2024-11-13 16:02:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:32,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 2073 proven. 853 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:35,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:35,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280022598] [2024-11-13 16:02:35,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280022598] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:02:35,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393768820] [2024-11-13 16:02:35,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:02:35,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:35,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:02:35,453 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:02:35,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2024-11-13 16:02:35,839 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 39 check-sat command(s) [2024-11-13 16:02:35,839 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:02:35,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-13 16:02:35,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:02:39,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 2185 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:39,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:02:41,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2926 backedges. 2185 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:41,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393768820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:02:41,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:02:41,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81, 81] total 122 [2024-11-13 16:02:41,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886702930] [2024-11-13 16:02:41,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:02:41,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2024-11-13 16:02:41,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:41,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2024-11-13 16:02:41,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3325, Invalid=11437, Unknown=0, NotChecked=0, Total=14762 [2024-11-13 16:02:41,268 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 122 states, 122 states have (on average 2.30327868852459) internal successors, (281), 122 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 16:02:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:41,917 INFO L93 Difference]: Finished difference Result 282 states and 284 transitions. [2024-11-13 16:02:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-13 16:02:41,918 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 122 states have (on average 2.30327868852459) internal successors, (281), 122 states have internal predecessors, (281), 0 states have call successors, (0), 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 159 [2024-11-13 16:02:41,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:41,918 INFO L225 Difference]: With dead ends: 282 [2024-11-13 16:02:41,919 INFO L226 Difference]: Without dead ends: 161 [2024-11-13 16:02:41,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 200 SyntacticMatches, 77 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9614 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=3325, Invalid=11437, Unknown=0, NotChecked=0, Total=14762 [2024-11-13 16:02:41,919 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:41,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 596 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:02:41,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-13 16:02:41,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2024-11-13 16:02:41,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.0125) internal successors, (162), 160 states have internal predecessors, (162), 0 states have call successors, (0), 0 states 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 16:02:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 162 transitions. [2024-11-13 16:02:41,937 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 162 transitions. Word has length 159 [2024-11-13 16:02:41,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:41,937 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 162 transitions. [2024-11-13 16:02:41,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 122 states have (on average 2.30327868852459) internal successors, (281), 122 states have internal predecessors, (281), 0 states have call successors, (0), 0 states 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 16:02:41,937 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 162 transitions. [2024-11-13 16:02:41,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-13 16:02:41,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:41,938 INFO L215 NwaCegarLoop]: trace histogram [39, 39, 38, 38, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:41,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2024-11-13 16:02:42,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2024-11-13 16:02:42,138 INFO L396 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:42,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:42,139 INFO L85 PathProgramCache]: Analyzing trace with hash 823876427, now seen corresponding path program 76 times [2024-11-13 16:02:42,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:42,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909055814] [2024-11-13 16:02:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:42,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2965 backedges. 741 proven. 2224 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:43,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:43,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909055814] [2024-11-13 16:02:43,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909055814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:02:43,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728463474] [2024-11-13 16:02:43,716 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:02:43,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:43,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:02:43,717 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:02:43,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2024-11-13 16:02:44,004 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:02:44,004 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:02:44,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-13 16:02:44,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:02:44,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2965 backedges. 780 proven. 2185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:44,209 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:02:45,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2965 backedges. 780 proven. 2185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:45,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728463474] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:02:45,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:02:45,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 45 [2024-11-13 16:02:45,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188252984] [2024-11-13 16:02:45,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:02:45,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 16:02:45,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:45,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 16:02:45,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=1111, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 16:02:45,730 INFO L87 Difference]: Start difference. First operand 161 states and 162 transitions. Second operand has 45 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 45 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 16:02:46,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:46,473 INFO L93 Difference]: Finished difference Result 172 states and 173 transitions. [2024-11-13 16:02:46,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-13 16:02:46,474 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 45 states have internal predecessors, (164), 0 states have call successors, (0), 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 160 [2024-11-13 16:02:46,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:46,475 INFO L225 Difference]: With dead ends: 172 [2024-11-13 16:02:46,475 INFO L226 Difference]: Without dead ends: 170 [2024-11-13 16:02:46,475 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 278 SyntacticMatches, 78 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3310 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2585, Invalid=4387, Unknown=0, NotChecked=0, Total=6972 [2024-11-13 16:02:46,476 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:46,476 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 31 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:02:46,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-13 16:02:46,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 164. [2024-11-13 16:02:46,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.0122699386503067) internal successors, (165), 163 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 16:02:46,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2024-11-13 16:02:46,494 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 160 [2024-11-13 16:02:46,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:46,494 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 165 transitions. [2024-11-13 16:02:46,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 45 states have internal predecessors, (164), 0 states have call successors, (0), 0 states 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 16:02:46,494 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 165 transitions. [2024-11-13 16:02:46,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-11-13 16:02:46,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:46,495 INFO L215 NwaCegarLoop]: trace histogram [40, 39, 39, 39, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:46,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2024-11-13 16:02:46,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2024-11-13 16:02:46,699 INFO L396 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:46,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:46,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1630641588, now seen corresponding path program 77 times [2024-11-13 16:02:46,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:46,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145053910] [2024-11-13 16:02:46,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:46,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:46,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 2186 proven. 895 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:49,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145053910] [2024-11-13 16:02:49,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145053910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:02:49,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700174639] [2024-11-13 16:02:49,638 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:02:49,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:49,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:02:49,639 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:02:49,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2024-11-13 16:02:49,986 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 40 check-sat command(s) [2024-11-13 16:02:49,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:02:49,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 82 conjuncts are in the unsatisfiable core [2024-11-13 16:02:49,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:02:52,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 2301 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:52,928 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:02:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3081 backedges. 2301 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:55,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700174639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:02:55,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:02:55,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83, 83] total 125 [2024-11-13 16:02:55,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817472408] [2024-11-13 16:02:55,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:02:55,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 125 states [2024-11-13 16:02:55,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:55,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 125 interpolants. [2024-11-13 16:02:55,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3490, Invalid=12010, Unknown=0, NotChecked=0, Total=15500 [2024-11-13 16:02:55,245 INFO L87 Difference]: Start difference. First operand 164 states and 165 transitions. Second operand has 125 states, 125 states have (on average 2.304) internal successors, (288), 125 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 16:02:55,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:02:55,987 INFO L93 Difference]: Finished difference Result 289 states and 291 transitions. [2024-11-13 16:02:55,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-13 16:02:55,988 INFO L78 Accepts]: Start accepts. Automaton has has 125 states, 125 states have (on average 2.304) internal successors, (288), 125 states have internal predecessors, (288), 0 states have call successors, (0), 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 163 [2024-11-13 16:02:55,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:02:55,989 INFO L225 Difference]: With dead ends: 289 [2024-11-13 16:02:55,989 INFO L226 Difference]: Without dead ends: 165 [2024-11-13 16:02:55,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 205 SyntacticMatches, 79 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10101 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=3490, Invalid=12010, Unknown=0, NotChecked=0, Total=15500 [2024-11-13 16:02:55,990 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:02:55,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 658 Invalid, 1265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:02:55,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-13 16:02:56,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-13 16:02:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.0121951219512195) internal successors, (166), 164 states have internal predecessors, (166), 0 states have call successors, (0), 0 states 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 16:02:56,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2024-11-13 16:02:56,010 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 163 [2024-11-13 16:02:56,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:02:56,010 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2024-11-13 16:02:56,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 125 states, 125 states have (on average 2.304) internal successors, (288), 125 states have internal predecessors, (288), 0 states have call successors, (0), 0 states 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 16:02:56,011 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2024-11-13 16:02:56,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-13 16:02:56,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:02:56,011 INFO L215 NwaCegarLoop]: trace histogram [40, 40, 39, 39, 1, 1, 1, 1, 1, 1] [2024-11-13 16:02:56,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2024-11-13 16:02:56,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2024-11-13 16:02:56,212 INFO L396 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:02:56,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:02:56,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1049681384, now seen corresponding path program 78 times [2024-11-13 16:02:56,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:02:56,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920744770] [2024-11-13 16:02:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:02:56,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:02:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:02:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 780 proven. 2341 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:57,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:02:57,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920744770] [2024-11-13 16:02:57,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920744770] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:02:57,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721581622] [2024-11-13 16:02:57,723 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:02:57,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:02:57,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:02:57,724 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:02:57,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2024-11-13 16:02:58,084 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 40 check-sat command(s) [2024-11-13 16:02:58,084 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:02:58,088 INFO L255 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-13 16:02:58,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:02:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 820 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:58,316 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:02:59,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3121 backedges. 820 proven. 2301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:02:59,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721581622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:02:59,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:02:59,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 46 [2024-11-13 16:02:59,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602072692] [2024-11-13 16:02:59,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:02:59,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 16:02:59,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:02:59,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 16:02:59,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=911, Invalid=1159, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 16:02:59,940 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand has 46 states, 46 states have (on average 3.652173913043478) internal successors, (168), 46 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 16:03:00,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:00,780 INFO L93 Difference]: Finished difference Result 176 states and 177 transitions. [2024-11-13 16:03:00,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-13 16:03:00,781 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.652173913043478) internal successors, (168), 46 states have internal predecessors, (168), 0 states have call successors, (0), 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 164 [2024-11-13 16:03:00,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:00,781 INFO L225 Difference]: With dead ends: 176 [2024-11-13 16:03:00,781 INFO L226 Difference]: Without dead ends: 174 [2024-11-13 16:03:00,782 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 285 SyntacticMatches, 80 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3475 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2711, Invalid=4599, Unknown=0, NotChecked=0, Total=7310 [2024-11-13 16:03:00,782 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:00,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:03:00,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-13 16:03:00,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 168. [2024-11-13 16:03:00,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 167 states have internal predecessors, (169), 0 states have call successors, (0), 0 states 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 16:03:00,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2024-11-13 16:03:00,813 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 164 [2024-11-13 16:03:00,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:00,814 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2024-11-13 16:03:00,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.652173913043478) internal successors, (168), 46 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 16:03:00,814 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2024-11-13 16:03:00,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-13 16:03:00,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:00,815 INFO L215 NwaCegarLoop]: trace histogram [41, 40, 40, 40, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:00,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2024-11-13 16:03:01,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:01,016 INFO L396 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:03:01,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:01,016 INFO L85 PathProgramCache]: Analyzing trace with hash -593953137, now seen corresponding path program 79 times [2024-11-13 16:03:01,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:01,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431864283] [2024-11-13 16:03:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:01,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:04,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 2302 proven. 938 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:04,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:04,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431864283] [2024-11-13 16:03:04,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431864283] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:04,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942113166] [2024-11-13 16:03:04,036 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:03:04,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:04,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:04,038 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:04,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2024-11-13 16:03:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:04,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 84 conjuncts are in the unsatisfiable core [2024-11-13 16:03:04,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:07,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 2420 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:07,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:09,795 INFO L134 CoverageAnalysis]: Checked inductivity of 3240 backedges. 2420 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:09,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942113166] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:09,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:09,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85, 85] total 128 [2024-11-13 16:03:09,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692066164] [2024-11-13 16:03:09,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:09,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2024-11-13 16:03:09,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:09,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2024-11-13 16:03:09,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=12597, Unknown=0, NotChecked=0, Total=16256 [2024-11-13 16:03:09,798 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 128 states, 128 states have (on average 2.3046875) internal successors, (295), 128 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 16:03:10,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:10,372 INFO L93 Difference]: Finished difference Result 296 states and 298 transitions. [2024-11-13 16:03:10,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-13 16:03:10,373 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 128 states have (on average 2.3046875) internal successors, (295), 128 states have internal predecessors, (295), 0 states have call successors, (0), 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 167 [2024-11-13 16:03:10,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:10,374 INFO L225 Difference]: With dead ends: 296 [2024-11-13 16:03:10,374 INFO L226 Difference]: Without dead ends: 169 [2024-11-13 16:03:10,375 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 210 SyntacticMatches, 81 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10600 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=3659, Invalid=12597, Unknown=0, NotChecked=0, Total=16256 [2024-11-13 16:03:10,375 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:10,375 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 375 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:03:10,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-13 16:03:10,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-11-13 16:03:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 168 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:03:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 170 transitions. [2024-11-13 16:03:10,386 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 170 transitions. Word has length 167 [2024-11-13 16:03:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:10,386 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 170 transitions. [2024-11-13 16:03:10,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 128 states have (on average 2.3046875) internal successors, (295), 128 states have internal predecessors, (295), 0 states have call successors, (0), 0 states 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 16:03:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 170 transitions. [2024-11-13 16:03:10,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-13 16:03:10,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:10,386 INFO L215 NwaCegarLoop]: trace histogram [41, 41, 40, 40, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:10,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2024-11-13 16:03:10,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:10,587 INFO L396 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:03:10,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:10,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1724101589, now seen corresponding path program 80 times [2024-11-13 16:03:10,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:10,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772136951] [2024-11-13 16:03:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:10,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3281 backedges. 820 proven. 2461 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:12,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:12,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772136951] [2024-11-13 16:03:12,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772136951] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:12,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417297862] [2024-11-13 16:03:12,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:03:12,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:12,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:12,144 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:12,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2024-11-13 16:03:12,446 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:03:12,446 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:03:12,449 INFO L255 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 85 conjuncts are in the unsatisfiable core [2024-11-13 16:03:12,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3281 backedges. 861 proven. 2420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:12,644 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:14,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3281 backedges. 861 proven. 2420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:14,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417297862] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:14,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:14,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 47 [2024-11-13 16:03:14,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27354492] [2024-11-13 16:03:14,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:14,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 16:03:14,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:14,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 16:03:14,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=954, Invalid=1208, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 16:03:14,240 INFO L87 Difference]: Start difference. First operand 169 states and 170 transitions. Second operand has 47 states, 47 states have (on average 3.6595744680851063) internal successors, (172), 47 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 16:03:15,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:15,045 INFO L93 Difference]: Finished difference Result 180 states and 181 transitions. [2024-11-13 16:03:15,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-13 16:03:15,046 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.6595744680851063) internal successors, (172), 47 states have internal predecessors, (172), 0 states have call successors, (0), 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 168 [2024-11-13 16:03:15,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:15,047 INFO L225 Difference]: With dead ends: 180 [2024-11-13 16:03:15,047 INFO L226 Difference]: Without dead ends: 178 [2024-11-13 16:03:15,047 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 291 SyntacticMatches, 83 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3685 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2840, Invalid=4816, Unknown=0, NotChecked=0, Total=7656 [2024-11-13 16:03:15,048 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:15,048 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:03:15,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-13 16:03:15,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 172. [2024-11-13 16:03:15,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 171 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 16:03:15,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 173 transitions. [2024-11-13 16:03:15,068 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 173 transitions. Word has length 168 [2024-11-13 16:03:15,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:15,068 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 173 transitions. [2024-11-13 16:03:15,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.6595744680851063) internal successors, (172), 47 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 16:03:15,068 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 173 transitions. [2024-11-13 16:03:15,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-13 16:03:15,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:15,069 INFO L215 NwaCegarLoop]: trace histogram [42, 41, 41, 41, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:15,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2024-11-13 16:03:15,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:15,270 INFO L396 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:03:15,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:15,270 INFO L85 PathProgramCache]: Analyzing trace with hash 808273260, now seen corresponding path program 81 times [2024-11-13 16:03:15,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:15,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748948470] [2024-11-13 16:03:15,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:15,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 2421 proven. 982 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:18,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:18,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748948470] [2024-11-13 16:03:18,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748948470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:18,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326069485] [2024-11-13 16:03:18,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:03:18,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:18,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:18,492 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:18,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2024-11-13 16:03:18,888 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2024-11-13 16:03:18,888 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:03:18,892 INFO L255 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-13 16:03:18,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:22,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 2542 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:22,164 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3403 backedges. 2542 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:24,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326069485] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:24,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:24,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 131 [2024-11-13 16:03:24,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912146094] [2024-11-13 16:03:24,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:24,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2024-11-13 16:03:24,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:24,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2024-11-13 16:03:24,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3832, Invalid=13198, Unknown=0, NotChecked=0, Total=17030 [2024-11-13 16:03:24,641 INFO L87 Difference]: Start difference. First operand 172 states and 173 transitions. Second operand has 131 states, 131 states have (on average 2.3053435114503817) internal successors, (302), 131 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 16:03:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:25,401 INFO L93 Difference]: Finished difference Result 303 states and 305 transitions. [2024-11-13 16:03:25,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-11-13 16:03:25,402 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 2.3053435114503817) internal successors, (302), 131 states have internal predecessors, (302), 0 states have call successors, (0), 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 171 [2024-11-13 16:03:25,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:25,403 INFO L225 Difference]: With dead ends: 303 [2024-11-13 16:03:25,403 INFO L226 Difference]: Without dead ends: 173 [2024-11-13 16:03:25,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 215 SyntacticMatches, 83 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11111 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=3832, Invalid=13198, Unknown=0, NotChecked=0, Total=17030 [2024-11-13 16:03:25,404 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 0 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:25,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 487 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:03:25,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-13 16:03:25,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-11-13 16:03:25,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 172 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 16:03:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 174 transitions. [2024-11-13 16:03:25,425 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 174 transitions. Word has length 171 [2024-11-13 16:03:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:25,426 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 174 transitions. [2024-11-13 16:03:25,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 2.3053435114503817) internal successors, (302), 131 states have internal predecessors, (302), 0 states have call successors, (0), 0 states 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 16:03:25,426 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 174 transitions. [2024-11-13 16:03:25,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-11-13 16:03:25,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:25,427 INFO L215 NwaCegarLoop]: trace histogram [42, 42, 41, 41, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:25,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2024-11-13 16:03:25,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:25,628 INFO L396 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:03:25,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:25,628 INFO L85 PathProgramCache]: Analyzing trace with hash 687367432, now seen corresponding path program 82 times [2024-11-13 16:03:25,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:25,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745858225] [2024-11-13 16:03:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:25,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3445 backedges. 861 proven. 2584 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:27,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:27,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745858225] [2024-11-13 16:03:27,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745858225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:27,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755117482] [2024-11-13 16:03:27,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:03:27,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:27,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:27,303 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:27,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2024-11-13 16:03:27,628 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:03:27,628 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:03:27,633 INFO L255 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-13 16:03:27,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3445 backedges. 903 proven. 2542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:27,854 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3445 backedges. 903 proven. 2542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:29,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755117482] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:29,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:29,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 48 [2024-11-13 16:03:29,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445427438] [2024-11-13 16:03:29,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:29,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-13 16:03:29,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:29,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-13 16:03:29,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=998, Invalid=1258, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 16:03:29,527 INFO L87 Difference]: Start difference. First operand 173 states and 174 transitions. Second operand has 48 states, 48 states have (on average 3.6666666666666665) internal successors, (176), 48 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 16:03:30,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:30,446 INFO L93 Difference]: Finished difference Result 184 states and 185 transitions. [2024-11-13 16:03:30,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-13 16:03:30,447 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.6666666666666665) internal successors, (176), 48 states have internal predecessors, (176), 0 states have call successors, (0), 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 172 [2024-11-13 16:03:30,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:30,448 INFO L225 Difference]: With dead ends: 184 [2024-11-13 16:03:30,448 INFO L226 Difference]: Without dead ends: 182 [2024-11-13 16:03:30,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 299 SyntacticMatches, 84 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3817 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2972, Invalid=5038, Unknown=0, NotChecked=0, Total=8010 [2024-11-13 16:03:30,449 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:30,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 38 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:03:30,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-13 16:03:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2024-11-13 16:03:30,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.0114285714285713) internal successors, (177), 175 states have internal predecessors, (177), 0 states have call successors, (0), 0 states 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 16:03:30,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 177 transitions. [2024-11-13 16:03:30,470 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 177 transitions. Word has length 172 [2024-11-13 16:03:30,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:30,470 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 177 transitions. [2024-11-13 16:03:30,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.6666666666666665) internal successors, (176), 48 states have internal predecessors, (176), 0 states have call successors, (0), 0 states 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 16:03:30,471 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 177 transitions. [2024-11-13 16:03:30,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-11-13 16:03:30,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:30,471 INFO L215 NwaCegarLoop]: trace histogram [43, 42, 42, 42, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:30,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2024-11-13 16:03:30,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2024-11-13 16:03:30,673 INFO L396 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:03:30,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:30,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1036082321, now seen corresponding path program 83 times [2024-11-13 16:03:30,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:30,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028634213] [2024-11-13 16:03:30,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:30,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:30,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 2543 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:34,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:34,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028634213] [2024-11-13 16:03:34,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028634213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:34,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469282787] [2024-11-13 16:03:34,064 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:03:34,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:34,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:34,066 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:34,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2024-11-13 16:03:34,451 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 43 check-sat command(s) [2024-11-13 16:03:34,452 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:03:34,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-13 16:03:34,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 2667 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:37,828 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 2667 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:40,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469282787] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:40,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:40,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89, 89] total 134 [2024-11-13 16:03:40,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150724708] [2024-11-13 16:03:40,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:40,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2024-11-13 16:03:40,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:40,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2024-11-13 16:03:40,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4009, Invalid=13813, Unknown=0, NotChecked=0, Total=17822 [2024-11-13 16:03:40,480 INFO L87 Difference]: Start difference. First operand 176 states and 177 transitions. Second operand has 134 states, 134 states have (on average 2.3059701492537314) internal successors, (309), 134 states have internal predecessors, (309), 0 states have call successors, (0), 0 states 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 16:03:41,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:41,171 INFO L93 Difference]: Finished difference Result 310 states and 312 transitions. [2024-11-13 16:03:41,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-13 16:03:41,171 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 2.3059701492537314) internal successors, (309), 134 states have internal predecessors, (309), 0 states have call successors, (0), 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 175 [2024-11-13 16:03:41,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:41,172 INFO L225 Difference]: With dead ends: 310 [2024-11-13 16:03:41,172 INFO L226 Difference]: Without dead ends: 177 [2024-11-13 16:03:41,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 220 SyntacticMatches, 85 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11634 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=4009, Invalid=13813, Unknown=0, NotChecked=0, Total=17822 [2024-11-13 16:03:41,173 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 1110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:41,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 574 Invalid, 1110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:03:41,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-13 16:03:41,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2024-11-13 16:03:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.0113636363636365) internal successors, (178), 176 states have internal predecessors, (178), 0 states have call successors, (0), 0 states 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 16:03:41,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2024-11-13 16:03:41,195 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 175 [2024-11-13 16:03:41,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:41,196 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2024-11-13 16:03:41,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 2.3059701492537314) internal successors, (309), 134 states have internal predecessors, (309), 0 states have call successors, (0), 0 states 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 16:03:41,196 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2024-11-13 16:03:41,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-13 16:03:41,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:41,197 INFO L215 NwaCegarLoop]: trace histogram [43, 43, 42, 42, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:41,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2024-11-13 16:03:41,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2024-11-13 16:03:41,398 INFO L396 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:03:41,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:41,398 INFO L85 PathProgramCache]: Analyzing trace with hash 452498699, now seen corresponding path program 84 times [2024-11-13 16:03:41,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:41,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295755888] [2024-11-13 16:03:41,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:41,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:43,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3613 backedges. 903 proven. 2710 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:43,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:43,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295755888] [2024-11-13 16:03:43,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295755888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:43,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620099124] [2024-11-13 16:03:43,119 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:03:43,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:43,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:43,122 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:43,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2024-11-13 16:03:43,523 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2024-11-13 16:03:43,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:03:43,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-13 16:03:43,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3613 backedges. 946 proven. 2667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:43,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3613 backedges. 946 proven. 2667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:45,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620099124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:45,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:45,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 49 [2024-11-13 16:03:45,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442778089] [2024-11-13 16:03:45,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:45,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-13 16:03:45,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:45,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-13 16:03:45,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1043, Invalid=1309, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 16:03:45,445 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand has 49 states, 49 states have (on average 3.673469387755102) internal successors, (180), 49 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 16:03:46,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:46,313 INFO L93 Difference]: Finished difference Result 188 states and 189 transitions. [2024-11-13 16:03:46,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-11-13 16:03:46,313 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.673469387755102) internal successors, (180), 49 states have internal predecessors, (180), 0 states have call successors, (0), 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 176 [2024-11-13 16:03:46,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:46,314 INFO L225 Difference]: With dead ends: 188 [2024-11-13 16:03:46,314 INFO L226 Difference]: Without dead ends: 186 [2024-11-13 16:03:46,314 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 306 SyntacticMatches, 86 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3994 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=3107, Invalid=5265, Unknown=0, NotChecked=0, Total=8372 [2024-11-13 16:03:46,315 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:46,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 44 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:03:46,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-13 16:03:46,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 180. [2024-11-13 16:03:46,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.011173184357542) internal successors, (181), 179 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 16:03:46,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 181 transitions. [2024-11-13 16:03:46,338 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 181 transitions. Word has length 176 [2024-11-13 16:03:46,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:46,338 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 181 transitions. [2024-11-13 16:03:46,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.673469387755102) internal successors, (180), 49 states have internal predecessors, (180), 0 states have call successors, (0), 0 states 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 16:03:46,338 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 181 transitions. [2024-11-13 16:03:46,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-13 16:03:46,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:46,339 INFO L215 NwaCegarLoop]: trace histogram [44, 43, 43, 43, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:46,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2024-11-13 16:03:46,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2024-11-13 16:03:46,540 INFO L396 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:03:46,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:46,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1508781940, now seen corresponding path program 85 times [2024-11-13 16:03:46,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:46,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066543092] [2024-11-13 16:03:46,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:46,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:46,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:50,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 2668 proven. 1073 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:50,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:50,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066543092] [2024-11-13 16:03:50,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066543092] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:50,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588049645] [2024-11-13 16:03:50,161 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:03:50,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:50,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:50,163 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:50,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2024-11-13 16:03:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:50,498 INFO L255 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-13 16:03:50,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:53,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 2795 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:53,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:03:56,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3741 backedges. 2795 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:56,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588049645] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:03:56,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:03:56,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91, 91] total 137 [2024-11-13 16:03:56,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218382001] [2024-11-13 16:03:56,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:03:56,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 137 states [2024-11-13 16:03:56,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:03:56,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 137 interpolants. [2024-11-13 16:03:56,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4190, Invalid=14442, Unknown=0, NotChecked=0, Total=18632 [2024-11-13 16:03:56,665 INFO L87 Difference]: Start difference. First operand 180 states and 181 transitions. Second operand has 137 states, 137 states have (on average 2.3065693430656933) internal successors, (316), 137 states have internal predecessors, (316), 0 states have call successors, (0), 0 states 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 16:03:57,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:03:57,356 INFO L93 Difference]: Finished difference Result 317 states and 319 transitions. [2024-11-13 16:03:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2024-11-13 16:03:57,356 INFO L78 Accepts]: Start accepts. Automaton has has 137 states, 137 states have (on average 2.3065693430656933) internal successors, (316), 137 states have internal predecessors, (316), 0 states have call successors, (0), 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 179 [2024-11-13 16:03:57,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:03:57,357 INFO L225 Difference]: With dead ends: 317 [2024-11-13 16:03:57,357 INFO L226 Difference]: Without dead ends: 181 [2024-11-13 16:03:57,358 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 225 SyntacticMatches, 87 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12169 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=4190, Invalid=14442, Unknown=0, NotChecked=0, Total=18632 [2024-11-13 16:03:57,359 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:03:57,359 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 544 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:03:57,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-13 16:03:57,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2024-11-13 16:03:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.011111111111111) internal successors, (182), 180 states have internal predecessors, (182), 0 states have call successors, (0), 0 states 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 16:03:57,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 182 transitions. [2024-11-13 16:03:57,382 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 182 transitions. Word has length 179 [2024-11-13 16:03:57,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:03:57,382 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 182 transitions. [2024-11-13 16:03:57,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 137 states, 137 states have (on average 2.3065693430656933) internal successors, (316), 137 states have internal predecessors, (316), 0 states have call successors, (0), 0 states 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 16:03:57,382 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 182 transitions. [2024-11-13 16:03:57,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-13 16:03:57,383 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:03:57,383 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 43, 43, 1, 1, 1, 1, 1, 1] [2024-11-13 16:03:57,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2024-11-13 16:03:57,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:57,584 INFO L396 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:03:57,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:03:57,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1191285800, now seen corresponding path program 86 times [2024-11-13 16:03:57,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:03:57,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933884524] [2024-11-13 16:03:57,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:03:57,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:03:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:03:59,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 946 proven. 2839 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:59,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:03:59,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933884524] [2024-11-13 16:03:59,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933884524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:03:59,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004817964] [2024-11-13 16:03:59,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:03:59,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:03:59,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:03:59,388 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:03:59,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2024-11-13 16:03:59,731 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:03:59,732 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:03:59,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-13 16:03:59,737 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:03:59,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 990 proven. 2795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:03:59,946 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:04:01,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 990 proven. 2795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:01,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004817964] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:04:01,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:04:01,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 50 [2024-11-13 16:04:01,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517669885] [2024-11-13 16:04:01,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:04:01,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-13 16:04:01,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:04:01,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-13 16:04:01,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1089, Invalid=1361, Unknown=0, NotChecked=0, Total=2450 [2024-11-13 16:04:01,767 INFO L87 Difference]: Start difference. First operand 181 states and 182 transitions. Second operand has 50 states, 50 states have (on average 3.68) internal successors, (184), 50 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 16:04:02,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:04:02,661 INFO L93 Difference]: Finished difference Result 192 states and 193 transitions. [2024-11-13 16:04:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-13 16:04:02,662 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.68) internal successors, (184), 50 states have internal predecessors, (184), 0 states have call successors, (0), 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 180 [2024-11-13 16:04:02,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:04:02,663 INFO L225 Difference]: With dead ends: 192 [2024-11-13 16:04:02,663 INFO L226 Difference]: Without dead ends: 190 [2024-11-13 16:04:02,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 312 SyntacticMatches, 89 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4219 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=3245, Invalid=5497, Unknown=0, NotChecked=0, Total=8742 [2024-11-13 16:04:02,664 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:04:02,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:04:02,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-13 16:04:02,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 184. [2024-11-13 16:04:02,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 1.010928961748634) internal successors, (185), 183 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 16:04:02,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 185 transitions. [2024-11-13 16:04:02,676 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 185 transitions. Word has length 180 [2024-11-13 16:04:02,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:04:02,677 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 185 transitions. [2024-11-13 16:04:02,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.68) internal successors, (184), 50 states have internal predecessors, (184), 0 states have call successors, (0), 0 states 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 16:04:02,677 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 185 transitions. [2024-11-13 16:04:02,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-13 16:04:02,677 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:04:02,678 INFO L215 NwaCegarLoop]: trace histogram [45, 44, 44, 44, 1, 1, 1, 1, 1, 1] [2024-11-13 16:04:02,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2024-11-13 16:04:02,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:02,878 INFO L396 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:04:02,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:04:02,878 INFO L85 PathProgramCache]: Analyzing trace with hash 285319247, now seen corresponding path program 87 times [2024-11-13 16:04:02,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:04:02,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062632960] [2024-11-13 16:04:02,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:04:02,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:04:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:04:06,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 2796 proven. 1120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:06,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:04:06,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062632960] [2024-11-13 16:04:06,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062632960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:04:06,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805989778] [2024-11-13 16:04:06,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:04:06,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:06,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:04:06,529 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:04:06,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2024-11-13 16:04:07,008 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 45 check-sat command(s) [2024-11-13 16:04:07,008 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:04:07,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-13 16:04:07,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:04:10,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 2926 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:10,783 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:04:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3916 backedges. 2926 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:13,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805989778] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:04:13,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:04:13,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93, 93] total 140 [2024-11-13 16:04:13,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711086147] [2024-11-13 16:04:13,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:04:13,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2024-11-13 16:04:13,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:04:13,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2024-11-13 16:04:13,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4375, Invalid=15085, Unknown=0, NotChecked=0, Total=19460 [2024-11-13 16:04:13,795 INFO L87 Difference]: Start difference. First operand 184 states and 185 transitions. Second operand has 140 states, 140 states have (on average 2.307142857142857) internal successors, (323), 140 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 16:04:14,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:04:14,498 INFO L93 Difference]: Finished difference Result 324 states and 326 transitions. [2024-11-13 16:04:14,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2024-11-13 16:04:14,498 INFO L78 Accepts]: Start accepts. Automaton has has 140 states, 140 states have (on average 2.307142857142857) internal successors, (323), 140 states have internal predecessors, (323), 0 states have call successors, (0), 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 183 [2024-11-13 16:04:14,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:04:14,500 INFO L225 Difference]: With dead ends: 324 [2024-11-13 16:04:14,500 INFO L226 Difference]: Without dead ends: 185 [2024-11-13 16:04:14,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 230 SyntacticMatches, 89 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12716 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=4375, Invalid=15085, Unknown=0, NotChecked=0, Total=19460 [2024-11-13 16:04:14,501 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:04:14,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 550 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:04:14,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-13 16:04:14,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2024-11-13 16:04:14,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.0108695652173914) internal successors, (186), 184 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 16:04:14,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2024-11-13 16:04:14,524 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 183 [2024-11-13 16:04:14,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:04:14,524 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2024-11-13 16:04:14,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 140 states, 140 states have (on average 2.307142857142857) internal successors, (323), 140 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 16:04:14,525 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2024-11-13 16:04:14,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-13 16:04:14,526 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:04:14,526 INFO L215 NwaCegarLoop]: trace histogram [45, 45, 44, 44, 1, 1, 1, 1, 1, 1] [2024-11-13 16:04:14,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2024-11-13 16:04:14,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:14,730 INFO L396 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:04:14,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:04:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1726887403, now seen corresponding path program 88 times [2024-11-13 16:04:14,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:04:14,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962404974] [2024-11-13 16:04:14,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:04:14,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:04:14,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:04:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3961 backedges. 990 proven. 2971 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:16,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:04:16,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962404974] [2024-11-13 16:04:16,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962404974] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:04:16,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813592792] [2024-11-13 16:04:16,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:04:16,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:16,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:04:16,834 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:04:16,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2024-11-13 16:04:17,220 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:04:17,220 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:04:17,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 699 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-13 16:04:17,228 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:04:17,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3961 backedges. 1035 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:17,483 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:04:19,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3961 backedges. 1035 proven. 2926 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:19,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813592792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:04:19,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:04:19,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 51 [2024-11-13 16:04:19,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855574357] [2024-11-13 16:04:19,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:04:19,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-13 16:04:19,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:04:19,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-13 16:04:19,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1136, Invalid=1414, Unknown=0, NotChecked=0, Total=2550 [2024-11-13 16:04:19,685 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand has 51 states, 51 states have (on average 3.6862745098039214) internal successors, (188), 51 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 16:04:20,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:04:20,908 INFO L93 Difference]: Finished difference Result 196 states and 197 transitions. [2024-11-13 16:04:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2024-11-13 16:04:20,909 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.6862745098039214) internal successors, (188), 51 states have internal predecessors, (188), 0 states have call successors, (0), 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 184 [2024-11-13 16:04:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:04:20,910 INFO L225 Difference]: With dead ends: 196 [2024-11-13 16:04:20,910 INFO L226 Difference]: Without dead ends: 194 [2024-11-13 16:04:20,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 320 SyntacticMatches, 90 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4360 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3386, Invalid=5734, Unknown=0, NotChecked=0, Total=9120 [2024-11-13 16:04:20,911 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:04:20,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:04:20,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-13 16:04:20,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2024-11-13 16:04:20,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.0106951871657754) internal successors, (189), 187 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 16:04:20,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 189 transitions. [2024-11-13 16:04:20,938 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 189 transitions. Word has length 184 [2024-11-13 16:04:20,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:04:20,938 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 189 transitions. [2024-11-13 16:04:20,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.6862745098039214) internal successors, (188), 51 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 16:04:20,938 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 189 transitions. [2024-11-13 16:04:20,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-13 16:04:20,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:04:20,940 INFO L215 NwaCegarLoop]: trace histogram [46, 45, 45, 45, 1, 1, 1, 1, 1, 1] [2024-11-13 16:04:20,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2024-11-13 16:04:21,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:21,140 INFO L396 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:04:21,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:04:21,140 INFO L85 PathProgramCache]: Analyzing trace with hash 589169580, now seen corresponding path program 89 times [2024-11-13 16:04:21,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:04:21,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272114714] [2024-11-13 16:04:21,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:04:21,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:04:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:04:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 2927 proven. 1168 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:25,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:04:25,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272114714] [2024-11-13 16:04:25,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272114714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:04:25,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153437361] [2024-11-13 16:04:25,603 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:04:25,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:25,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:04:25,605 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:04:25,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2024-11-13 16:04:26,119 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 46 check-sat command(s) [2024-11-13 16:04:26,119 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:04:26,125 INFO L255 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-13 16:04:26,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:04:30,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 3060 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:30,094 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:04:33,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4095 backedges. 3060 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:33,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153437361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:04:33,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:04:33,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 143 [2024-11-13 16:04:33,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963732458] [2024-11-13 16:04:33,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:04:33,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 143 states [2024-11-13 16:04:33,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:04:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2024-11-13 16:04:33,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4564, Invalid=15742, Unknown=0, NotChecked=0, Total=20306 [2024-11-13 16:04:33,030 INFO L87 Difference]: Start difference. First operand 188 states and 189 transitions. Second operand has 143 states, 143 states have (on average 2.3076923076923075) internal successors, (330), 143 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 16:04:33,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:04:33,783 INFO L93 Difference]: Finished difference Result 331 states and 333 transitions. [2024-11-13 16:04:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-13 16:04:33,784 INFO L78 Accepts]: Start accepts. Automaton has has 143 states, 143 states have (on average 2.3076923076923075) internal successors, (330), 143 states have internal predecessors, (330), 0 states have call successors, (0), 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 187 [2024-11-13 16:04:33,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:04:33,785 INFO L225 Difference]: With dead ends: 331 [2024-11-13 16:04:33,785 INFO L226 Difference]: Without dead ends: 189 [2024-11-13 16:04:33,786 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 235 SyntacticMatches, 91 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13275 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=4564, Invalid=15742, Unknown=0, NotChecked=0, Total=20306 [2024-11-13 16:04:33,786 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 0 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 1235 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 1235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:04:33,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 632 Invalid, 1235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1235 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:04:33,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-13 16:04:33,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2024-11-13 16:04:33,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.0106382978723405) internal successors, (190), 188 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 16:04:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 190 transitions. [2024-11-13 16:04:33,810 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 190 transitions. Word has length 187 [2024-11-13 16:04:33,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:04:33,810 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 190 transitions. [2024-11-13 16:04:33,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 143 states, 143 states have (on average 2.3076923076923075) internal successors, (330), 143 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 16:04:33,810 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 190 transitions. [2024-11-13 16:04:33,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-13 16:04:33,811 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:04:33,811 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 45, 45, 1, 1, 1, 1, 1, 1] [2024-11-13 16:04:33,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2024-11-13 16:04:34,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:34,012 INFO L396 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:04:34,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:04:34,012 INFO L85 PathProgramCache]: Analyzing trace with hash -548508856, now seen corresponding path program 90 times [2024-11-13 16:04:34,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:04:34,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770975356] [2024-11-13 16:04:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:04:34,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:04:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:04:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 1035 proven. 3106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:36,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:04:36,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770975356] [2024-11-13 16:04:36,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770975356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:04:36,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453830817] [2024-11-13 16:04:36,085 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:04:36,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:36,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:04:36,086 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:04:36,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2024-11-13 16:04:36,534 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2024-11-13 16:04:36,534 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:04:36,538 INFO L255 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-13 16:04:36,541 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:04:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 1081 proven. 3060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:36,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:04:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4141 backedges. 1081 proven. 3060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:38,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453830817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:04:38,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:04:38,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 52 [2024-11-13 16:04:38,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142758508] [2024-11-13 16:04:38,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:04:38,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-13 16:04:38,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:04:38,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-13 16:04:38,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1184, Invalid=1468, Unknown=0, NotChecked=0, Total=2652 [2024-11-13 16:04:38,708 INFO L87 Difference]: Start difference. First operand 189 states and 190 transitions. Second operand has 52 states, 52 states have (on average 3.6923076923076925) internal successors, (192), 52 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 16:04:39,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:04:39,782 INFO L93 Difference]: Finished difference Result 200 states and 201 transitions. [2024-11-13 16:04:39,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-13 16:04:39,783 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.6923076923076925) internal successors, (192), 52 states have internal predecessors, (192), 0 states have call successors, (0), 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 188 [2024-11-13 16:04:39,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:04:39,784 INFO L225 Difference]: With dead ends: 200 [2024-11-13 16:04:39,784 INFO L226 Difference]: Without dead ends: 198 [2024-11-13 16:04:39,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 327 SyntacticMatches, 92 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4549 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3530, Invalid=5976, Unknown=0, NotChecked=0, Total=9506 [2024-11-13 16:04:39,785 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:04:39,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 29 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:04:39,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-13 16:04:39,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 192. [2024-11-13 16:04:39,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 1.0104712041884816) internal successors, (193), 191 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 16:04:39,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 193 transitions. [2024-11-13 16:04:39,824 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 193 transitions. Word has length 188 [2024-11-13 16:04:39,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:04:39,825 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 193 transitions. [2024-11-13 16:04:39,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.6923076923076925) internal successors, (192), 52 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 16:04:39,825 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 193 transitions. [2024-11-13 16:04:39,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-13 16:04:39,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:04:39,826 INFO L215 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2024-11-13 16:04:39,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2024-11-13 16:04:40,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:40,026 INFO L396 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:04:40,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:04:40,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1728050479, now seen corresponding path program 91 times [2024-11-13 16:04:40,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:04:40,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886852105] [2024-11-13 16:04:40,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:04:40,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:04:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:04:43,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 3061 proven. 1217 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:43,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:04:43,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886852105] [2024-11-13 16:04:43,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886852105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:04:43,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358563664] [2024-11-13 16:04:43,964 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:04:43,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:43,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:04:43,966 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:04:43,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2024-11-13 16:04:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:04:44,333 INFO L255 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-13 16:04:44,335 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:04:48,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 3197 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:48,364 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:04:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 4278 backedges. 3197 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:51,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358563664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:04:51,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:04:51,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 146 [2024-11-13 16:04:51,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225624074] [2024-11-13 16:04:51,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:04:51,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2024-11-13 16:04:51,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:04:51,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2024-11-13 16:04:51,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4757, Invalid=16413, Unknown=0, NotChecked=0, Total=21170 [2024-11-13 16:04:51,554 INFO L87 Difference]: Start difference. First operand 192 states and 193 transitions. Second operand has 146 states, 146 states have (on average 2.308219178082192) internal successors, (337), 146 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 16:04:52,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:04:52,339 INFO L93 Difference]: Finished difference Result 338 states and 340 transitions. [2024-11-13 16:04:52,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2024-11-13 16:04:52,340 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 146 states have (on average 2.308219178082192) internal successors, (337), 146 states have internal predecessors, (337), 0 states have call successors, (0), 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 191 [2024-11-13 16:04:52,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:04:52,341 INFO L225 Difference]: With dead ends: 338 [2024-11-13 16:04:52,341 INFO L226 Difference]: Without dead ends: 193 [2024-11-13 16:04:52,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 240 SyntacticMatches, 93 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13846 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=4757, Invalid=16413, Unknown=0, NotChecked=0, Total=21170 [2024-11-13 16:04:52,342 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 0 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:04:52,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 629 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:04:52,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2024-11-13 16:04:52,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2024-11-13 16:04:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 192 states have internal predecessors, (194), 0 states have call successors, (0), 0 states 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 16:04:52,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2024-11-13 16:04:52,365 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 191 [2024-11-13 16:04:52,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:04:52,365 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2024-11-13 16:04:52,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 146 states have (on average 2.308219178082192) internal successors, (337), 146 states have internal predecessors, (337), 0 states have call successors, (0), 0 states 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 16:04:52,365 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2024-11-13 16:04:52,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2024-11-13 16:04:52,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:04:52,366 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 1, 1, 1, 1, 1, 1] [2024-11-13 16:04:52,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2024-11-13 16:04:52,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:52,567 INFO L396 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:04:52,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:04:52,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1060843211, now seen corresponding path program 92 times [2024-11-13 16:04:52,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:04:52,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88173502] [2024-11-13 16:04:52,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:04:52,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:04:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:04:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 1081 proven. 3244 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:54,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:04:54,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88173502] [2024-11-13 16:04:54,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88173502] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:04:54,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480569634] [2024-11-13 16:04:54,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:04:54,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:54,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:04:54,656 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:04:54,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2024-11-13 16:04:55,029 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:04:55,029 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:04:55,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-13 16:04:55,035 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:04:55,257 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 1128 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:55,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:04:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4325 backedges. 1128 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:04:57,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480569634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:04:57,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:04:57,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 53 [2024-11-13 16:04:57,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668536834] [2024-11-13 16:04:57,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:04:57,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-11-13 16:04:57,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:04:57,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-11-13 16:04:57,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1233, Invalid=1523, Unknown=0, NotChecked=0, Total=2756 [2024-11-13 16:04:57,304 INFO L87 Difference]: Start difference. First operand 193 states and 194 transitions. Second operand has 53 states, 53 states have (on average 3.69811320754717) internal successors, (196), 53 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 16:04:58,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:04:58,313 INFO L93 Difference]: Finished difference Result 204 states and 205 transitions. [2024-11-13 16:04:58,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2024-11-13 16:04:58,313 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 3.69811320754717) internal successors, (196), 53 states have internal predecessors, (196), 0 states have call successors, (0), 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 192 [2024-11-13 16:04:58,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:04:58,314 INFO L225 Difference]: With dead ends: 204 [2024-11-13 16:04:58,314 INFO L226 Difference]: Without dead ends: 202 [2024-11-13 16:04:58,315 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 333 SyntacticMatches, 95 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4789 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3677, Invalid=6223, Unknown=0, NotChecked=0, Total=9900 [2024-11-13 16:04:58,315 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:04:58,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 31 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:04:58,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-13 16:04:58,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 196. [2024-11-13 16:04:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 195 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 16:04:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 197 transitions. [2024-11-13 16:04:58,341 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 197 transitions. Word has length 192 [2024-11-13 16:04:58,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:04:58,341 INFO L471 AbstractCegarLoop]: Abstraction has 196 states and 197 transitions. [2024-11-13 16:04:58,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 3.69811320754717) internal successors, (196), 53 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 16:04:58,342 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 197 transitions. [2024-11-13 16:04:58,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-13 16:04:58,342 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:04:58,343 INFO L215 NwaCegarLoop]: trace histogram [48, 47, 47, 47, 1, 1, 1, 1, 1, 1] [2024-11-13 16:04:58,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2024-11-13 16:04:58,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:04:58,543 INFO L396 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:04:58,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:04:58,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1215553228, now seen corresponding path program 93 times [2024-11-13 16:04:58,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:04:58,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690843751] [2024-11-13 16:04:58,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:04:58,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:04:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:05:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 3198 proven. 1267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:02,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:05:02,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690843751] [2024-11-13 16:05:02,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690843751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:05:02,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509740940] [2024-11-13 16:05:02,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:05:02,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:05:02,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:05:02,701 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:05:02,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2024-11-13 16:05:03,203 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 48 check-sat command(s) [2024-11-13 16:05:03,203 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:05:03,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-13 16:05:03,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:05:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 3337 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:07,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:05:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 3337 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:10,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509740940] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:05:10,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:05:10,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99, 99] total 149 [2024-11-13 16:05:10,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255281367] [2024-11-13 16:05:10,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:05:10,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2024-11-13 16:05:10,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:05:10,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2024-11-13 16:05:10,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4954, Invalid=17098, Unknown=0, NotChecked=0, Total=22052 [2024-11-13 16:05:10,573 INFO L87 Difference]: Start difference. First operand 196 states and 197 transitions. Second operand has 149 states, 149 states have (on average 2.3087248322147653) internal successors, (344), 149 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 16:05:11,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:05:11,441 INFO L93 Difference]: Finished difference Result 345 states and 347 transitions. [2024-11-13 16:05:11,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-13 16:05:11,442 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 2.3087248322147653) internal successors, (344), 149 states have internal predecessors, (344), 0 states have call successors, (0), 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 195 [2024-11-13 16:05:11,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:05:11,442 INFO L225 Difference]: With dead ends: 345 [2024-11-13 16:05:11,442 INFO L226 Difference]: Without dead ends: 197 [2024-11-13 16:05:11,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 245 SyntacticMatches, 95 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14429 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=4954, Invalid=17098, Unknown=0, NotChecked=0, Total=22052 [2024-11-13 16:05:11,443 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:05:11,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 659 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:05:11,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-13 16:05:11,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-13 16:05:11,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.010204081632653) internal successors, (198), 196 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 16:05:11,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2024-11-13 16:05:11,469 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 195 [2024-11-13 16:05:11,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:05:11,469 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2024-11-13 16:05:11,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 2.3087248322147653) internal successors, (344), 149 states have internal predecessors, (344), 0 states have call successors, (0), 0 states 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 16:05:11,469 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2024-11-13 16:05:11,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-13 16:05:11,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:05:11,470 INFO L215 NwaCegarLoop]: trace histogram [48, 48, 47, 47, 1, 1, 1, 1, 1, 1] [2024-11-13 16:05:11,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2024-11-13 16:05:11,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:05:11,671 INFO L396 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:05:11,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:05:11,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1224676760, now seen corresponding path program 94 times [2024-11-13 16:05:11,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:05:11,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205125141] [2024-11-13 16:05:11,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:05:11,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:05:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:05:13,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4513 backedges. 1128 proven. 3385 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:13,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:05:13,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205125141] [2024-11-13 16:05:13,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205125141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:05:13,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395529660] [2024-11-13 16:05:13,793 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:05:13,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:05:13,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:05:13,794 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:05:13,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2024-11-13 16:05:14,185 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:05:14,185 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:05:14,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-13 16:05:14,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:05:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4513 backedges. 1176 proven. 3337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:14,416 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:05:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4513 backedges. 1176 proven. 3337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:16,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395529660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:05:16,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:05:16,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 54 [2024-11-13 16:05:16,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441997940] [2024-11-13 16:05:16,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:05:16,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-13 16:05:16,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:05:16,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-13 16:05:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1283, Invalid=1579, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 16:05:16,529 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand has 54 states, 54 states have (on average 3.7037037037037037) internal successors, (200), 54 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 16:05:17,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:05:17,540 INFO L93 Difference]: Finished difference Result 208 states and 209 transitions. [2024-11-13 16:05:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-13 16:05:17,540 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 3.7037037037037037) internal successors, (200), 54 states have internal predecessors, (200), 0 states have call successors, (0), 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 196 [2024-11-13 16:05:17,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:05:17,541 INFO L225 Difference]: With dead ends: 208 [2024-11-13 16:05:17,541 INFO L226 Difference]: Without dead ends: 206 [2024-11-13 16:05:17,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 341 SyntacticMatches, 96 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4939 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3827, Invalid=6475, Unknown=0, NotChecked=0, Total=10302 [2024-11-13 16:05:17,542 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:05:17,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:05:17,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-13 16:05:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 200. [2024-11-13 16:05:17,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.0100502512562815) internal successors, (201), 199 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:05:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 201 transitions. [2024-11-13 16:05:17,568 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 201 transitions. Word has length 196 [2024-11-13 16:05:17,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:05:17,568 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 201 transitions. [2024-11-13 16:05:17,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 3.7037037037037037) internal successors, (200), 54 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 16:05:17,569 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 201 transitions. [2024-11-13 16:05:17,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-13 16:05:17,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:05:17,570 INFO L215 NwaCegarLoop]: trace histogram [49, 48, 48, 48, 1, 1, 1, 1, 1, 1] [2024-11-13 16:05:17,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2024-11-13 16:05:17,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:05:17,770 INFO L396 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:05:17,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:05:17,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1406640655, now seen corresponding path program 95 times [2024-11-13 16:05:17,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:05:17,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886801997] [2024-11-13 16:05:17,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:05:17,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:05:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:05:22,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 3338 proven. 1318 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:22,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:05:22,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886801997] [2024-11-13 16:05:22,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886801997] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:05:22,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140940605] [2024-11-13 16:05:22,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:05:22,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:05:22,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:05:22,093 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:05:22,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2024-11-13 16:05:22,581 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 49 check-sat command(s) [2024-11-13 16:05:22,581 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:05:22,586 INFO L255 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-13 16:05:22,588 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:05:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 3480 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:26,800 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:05:30,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4656 backedges. 3480 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:30,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140940605] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:05:30,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:05:30,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 152 [2024-11-13 16:05:30,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781265913] [2024-11-13 16:05:30,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:05:30,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 152 states [2024-11-13 16:05:30,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:05:30,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants. [2024-11-13 16:05:30,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5155, Invalid=17797, Unknown=0, NotChecked=0, Total=22952 [2024-11-13 16:05:30,120 INFO L87 Difference]: Start difference. First operand 200 states and 201 transitions. Second operand has 152 states, 152 states have (on average 2.3092105263157894) internal successors, (351), 152 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 16:05:30,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:05:30,858 INFO L93 Difference]: Finished difference Result 352 states and 354 transitions. [2024-11-13 16:05:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-13 16:05:30,859 INFO L78 Accepts]: Start accepts. Automaton has has 152 states, 152 states have (on average 2.3092105263157894) internal successors, (351), 152 states have internal predecessors, (351), 0 states have call successors, (0), 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 199 [2024-11-13 16:05:30,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:05:30,859 INFO L225 Difference]: With dead ends: 352 [2024-11-13 16:05:30,859 INFO L226 Difference]: Without dead ends: 201 [2024-11-13 16:05:30,860 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 250 SyntacticMatches, 97 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15024 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=5155, Invalid=17797, Unknown=0, NotChecked=0, Total=22952 [2024-11-13 16:05:30,861 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 0 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:05:30,861 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 548 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:05:30,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-13 16:05:30,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2024-11-13 16:05:30,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.01) internal successors, (202), 200 states have internal predecessors, (202), 0 states have call successors, (0), 0 states 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 16:05:30,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 202 transitions. [2024-11-13 16:05:30,876 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 202 transitions. Word has length 199 [2024-11-13 16:05:30,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:05:30,876 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 202 transitions. [2024-11-13 16:05:30,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 152 states, 152 states have (on average 2.3092105263157894) internal successors, (351), 152 states have internal predecessors, (351), 0 states have call successors, (0), 0 states 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 16:05:30,876 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 202 transitions. [2024-11-13 16:05:30,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-13 16:05:30,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:05:30,877 INFO L215 NwaCegarLoop]: trace histogram [49, 49, 48, 48, 1, 1, 1, 1, 1, 1] [2024-11-13 16:05:30,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2024-11-13 16:05:31,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:05:31,077 INFO L396 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:05:31,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:05:31,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1467842475, now seen corresponding path program 96 times [2024-11-13 16:05:31,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:05:31,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094878470] [2024-11-13 16:05:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:05:31,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:05:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:05:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4705 backedges. 1176 proven. 3529 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:33,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:05:33,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094878470] [2024-11-13 16:05:33,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094878470] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:05:33,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494337120] [2024-11-13 16:05:33,369 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:05:33,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:05:33,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:05:33,370 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:05:33,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2024-11-13 16:05:33,872 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2024-11-13 16:05:33,872 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:05:33,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-13 16:05:33,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:05:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4705 backedges. 1225 proven. 3480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:34,112 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:05:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 4705 backedges. 1225 proven. 3480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:36,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494337120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:05:36,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:05:36,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 55 [2024-11-13 16:05:36,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545709725] [2024-11-13 16:05:36,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:05:36,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-13 16:05:36,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:05:36,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-13 16:05:36,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1334, Invalid=1636, Unknown=0, NotChecked=0, Total=2970 [2024-11-13 16:05:36,313 INFO L87 Difference]: Start difference. First operand 201 states and 202 transitions. Second operand has 55 states, 55 states have (on average 3.709090909090909) internal successors, (204), 55 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 16:05:37,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:05:37,368 INFO L93 Difference]: Finished difference Result 212 states and 213 transitions. [2024-11-13 16:05:37,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-13 16:05:37,369 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.709090909090909) internal successors, (204), 55 states have internal predecessors, (204), 0 states have call successors, (0), 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 200 [2024-11-13 16:05:37,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:05:37,370 INFO L225 Difference]: With dead ends: 212 [2024-11-13 16:05:37,370 INFO L226 Difference]: Without dead ends: 210 [2024-11-13 16:05:37,371 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 348 SyntacticMatches, 98 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5140 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3980, Invalid=6732, Unknown=0, NotChecked=0, Total=10712 [2024-11-13 16:05:37,371 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:05:37,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:05:37,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-13 16:05:37,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 204. [2024-11-13 16:05:37,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.0098522167487685) internal successors, (205), 203 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 16:05:37,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 205 transitions. [2024-11-13 16:05:37,400 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 205 transitions. Word has length 200 [2024-11-13 16:05:37,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:05:37,401 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 205 transitions. [2024-11-13 16:05:37,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.709090909090909) internal successors, (204), 55 states have internal predecessors, (204), 0 states have call successors, (0), 0 states 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 16:05:37,401 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 205 transitions. [2024-11-13 16:05:37,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-13 16:05:37,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:05:37,401 INFO L215 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 1, 1, 1, 1, 1, 1] [2024-11-13 16:05:37,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2024-11-13 16:05:37,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2024-11-13 16:05:37,602 INFO L396 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:05:37,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:05:37,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1437950444, now seen corresponding path program 97 times [2024-11-13 16:05:37,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:05:37,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996321780] [2024-11-13 16:05:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:05:37,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:05:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:05:42,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 3481 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:42,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:05:42,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996321780] [2024-11-13 16:05:42,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996321780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:05:42,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062806866] [2024-11-13 16:05:42,124 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:05:42,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:05:42,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:05:42,126 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:05:42,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2024-11-13 16:05:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:05:42,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-13 16:05:42,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:05:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 3626 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:46,951 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:05:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4851 backedges. 3626 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:50,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062806866] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:05:50,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:05:50,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103, 103] total 155 [2024-11-13 16:05:50,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867220931] [2024-11-13 16:05:50,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:05:50,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2024-11-13 16:05:50,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:05:50,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2024-11-13 16:05:50,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5360, Invalid=18510, Unknown=0, NotChecked=0, Total=23870 [2024-11-13 16:05:50,473 INFO L87 Difference]: Start difference. First operand 204 states and 205 transitions. Second operand has 155 states, 155 states have (on average 2.3096774193548386) internal successors, (358), 155 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:05:51,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:05:51,177 INFO L93 Difference]: Finished difference Result 359 states and 361 transitions. [2024-11-13 16:05:51,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2024-11-13 16:05:51,177 INFO L78 Accepts]: Start accepts. Automaton has has 155 states, 155 states have (on average 2.3096774193548386) internal successors, (358), 155 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2024-11-13 16:05:51,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:05:51,178 INFO L225 Difference]: With dead ends: 359 [2024-11-13 16:05:51,178 INFO L226 Difference]: Without dead ends: 205 [2024-11-13 16:05:51,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 255 SyntacticMatches, 99 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15631 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=5360, Invalid=18510, Unknown=0, NotChecked=0, Total=23870 [2024-11-13 16:05:51,180 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:05:51,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 450 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:05:51,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-13 16:05:51,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2024-11-13 16:05:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.0098039215686274) internal successors, (206), 204 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 16:05:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 206 transitions. [2024-11-13 16:05:51,195 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 206 transitions. Word has length 203 [2024-11-13 16:05:51,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:05:51,195 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 206 transitions. [2024-11-13 16:05:51,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 155 states, 155 states have (on average 2.3096774193548386) internal successors, (358), 155 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:05:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 206 transitions. [2024-11-13 16:05:51,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-11-13 16:05:51,196 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:05:51,196 INFO L215 NwaCegarLoop]: trace histogram [50, 50, 49, 49, 1, 1, 1, 1, 1, 1] [2024-11-13 16:05:51,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2024-11-13 16:05:51,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2024-11-13 16:05:51,396 INFO L396 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:05:51,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:05:51,397 INFO L85 PathProgramCache]: Analyzing trace with hash 834343304, now seen corresponding path program 98 times [2024-11-13 16:05:51,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:05:51,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820872329] [2024-11-13 16:05:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:05:51,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:05:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:05:53,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1225 proven. 3676 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:53,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:05:53,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820872329] [2024-11-13 16:05:53,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820872329] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:05:53,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516001890] [2024-11-13 16:05:53,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:05:53,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:05:53,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:05:53,876 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:05:53,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2024-11-13 16:05:54,337 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:05:54,337 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:05:54,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 103 conjuncts are in the unsatisfiable core [2024-11-13 16:05:54,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:05:54,622 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1275 proven. 3626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:54,622 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:05:57,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4901 backedges. 1275 proven. 3626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:05:57,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516001890] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:05:57,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:05:57,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 56 [2024-11-13 16:05:57,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163272826] [2024-11-13 16:05:57,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:05:57,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 16:05:57,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:05:57,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 16:05:57,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1386, Invalid=1694, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 16:05:57,203 INFO L87 Difference]: Start difference. First operand 205 states and 206 transitions. Second operand has 56 states, 56 states have (on average 3.7142857142857144) internal successors, (208), 56 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 16:05:58,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:05:58,515 INFO L93 Difference]: Finished difference Result 216 states and 217 transitions. [2024-11-13 16:05:58,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2024-11-13 16:05:58,515 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.7142857142857144) internal successors, (208), 56 states have internal predecessors, (208), 0 states have call successors, (0), 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 204 [2024-11-13 16:05:58,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:05:58,516 INFO L225 Difference]: With dead ends: 216 [2024-11-13 16:05:58,517 INFO L226 Difference]: Without dead ends: 214 [2024-11-13 16:05:58,517 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 354 SyntacticMatches, 101 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5395 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=4136, Invalid=6994, Unknown=0, NotChecked=0, Total=11130 [2024-11-13 16:05:58,518 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:05:58,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:05:58,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-13 16:05:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 208. [2024-11-13 16:05:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 207 states have internal predecessors, (209), 0 states have call successors, (0), 0 states 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 16:05:58,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 209 transitions. [2024-11-13 16:05:58,541 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 209 transitions. Word has length 204 [2024-11-13 16:05:58,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:05:58,541 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 209 transitions. [2024-11-13 16:05:58,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.7142857142857144) internal successors, (208), 56 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 16:05:58,541 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 209 transitions. [2024-11-13 16:05:58,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-13 16:05:58,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:05:58,542 INFO L215 NwaCegarLoop]: trace histogram [51, 50, 50, 50, 1, 1, 1, 1, 1, 1] [2024-11-13 16:05:58,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2024-11-13 16:05:58,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2024-11-13 16:05:58,742 INFO L396 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:05:58,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:05:58,743 INFO L85 PathProgramCache]: Analyzing trace with hash 950445807, now seen corresponding path program 99 times [2024-11-13 16:05:58,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:05:58,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741407664] [2024-11-13 16:05:58,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:05:58,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:05:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:06:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 3627 proven. 1423 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:03,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:06:03,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741407664] [2024-11-13 16:06:03,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741407664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:06:03,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312353329] [2024-11-13 16:06:03,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:06:03,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:06:03,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:06:03,598 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:06:03,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2024-11-13 16:06:04,139 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 51 check-sat command(s) [2024-11-13 16:06:04,139 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:06:04,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 104 conjuncts are in the unsatisfiable core [2024-11-13 16:06:04,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:06:08,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 3775 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:08,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:06:12,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5050 backedges. 3775 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:12,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312353329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:06:12,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:06:12,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105, 105] total 158 [2024-11-13 16:06:12,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965424071] [2024-11-13 16:06:12,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:06:12,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 158 states [2024-11-13 16:06:12,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:06:12,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants. [2024-11-13 16:06:12,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5569, Invalid=19237, Unknown=0, NotChecked=0, Total=24806 [2024-11-13 16:06:12,319 INFO L87 Difference]: Start difference. First operand 208 states and 209 transitions. Second operand has 158 states, 158 states have (on average 2.310126582278481) internal successors, (365), 158 states have internal predecessors, (365), 0 states have call successors, (0), 0 states 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 16:06:13,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:06:13,261 INFO L93 Difference]: Finished difference Result 366 states and 368 transitions. [2024-11-13 16:06:13,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2024-11-13 16:06:13,261 INFO L78 Accepts]: Start accepts. Automaton has has 158 states, 158 states have (on average 2.310126582278481) internal successors, (365), 158 states have internal predecessors, (365), 0 states have call successors, (0), 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 207 [2024-11-13 16:06:13,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:06:13,263 INFO L225 Difference]: With dead ends: 366 [2024-11-13 16:06:13,263 INFO L226 Difference]: Without dead ends: 209 [2024-11-13 16:06:13,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 260 SyntacticMatches, 101 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16250 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=5569, Invalid=19237, Unknown=0, NotChecked=0, Total=24806 [2024-11-13 16:06:13,264 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:06:13,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 734 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:06:13,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-13 16:06:13,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2024-11-13 16:06:13,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.0096153846153846) internal successors, (210), 208 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 16:06:13,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2024-11-13 16:06:13,301 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 207 [2024-11-13 16:06:13,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:06:13,301 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2024-11-13 16:06:13,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 158 states, 158 states have (on average 2.310126582278481) internal successors, (365), 158 states have internal predecessors, (365), 0 states have call successors, (0), 0 states 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 16:06:13,301 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2024-11-13 16:06:13,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-13 16:06:13,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:06:13,302 INFO L215 NwaCegarLoop]: trace histogram [51, 51, 50, 50, 1, 1, 1, 1, 1, 1] [2024-11-13 16:06:13,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2024-11-13 16:06:13,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2024-11-13 16:06:13,503 INFO L396 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:06:13,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:06:13,503 INFO L85 PathProgramCache]: Analyzing trace with hash 886253707, now seen corresponding path program 100 times [2024-11-13 16:06:13,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:06:13,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850538038] [2024-11-13 16:06:13,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:06:13,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:06:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:06:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5101 backedges. 1275 proven. 3826 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:15,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:06:15,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850538038] [2024-11-13 16:06:15,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850538038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:06:15,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386809816] [2024-11-13 16:06:15,932 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:06:15,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:06:15,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:06:15,934 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:06:15,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2024-11-13 16:06:16,365 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:06:16,365 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:06:16,371 INFO L255 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-13 16:06:16,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:06:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5101 backedges. 1326 proven. 3775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:16,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:06:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 5101 backedges. 1326 proven. 3775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:18,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386809816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:06:18,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:06:18,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55, 55] total 57 [2024-11-13 16:06:18,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848585126] [2024-11-13 16:06:18,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:06:18,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-13 16:06:18,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:06:18,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-13 16:06:18,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1439, Invalid=1753, Unknown=0, NotChecked=0, Total=3192 [2024-11-13 16:06:18,976 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand has 57 states, 57 states have (on average 3.719298245614035) internal successors, (212), 57 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 16:06:20,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:06:20,156 INFO L93 Difference]: Finished difference Result 220 states and 221 transitions. [2024-11-13 16:06:20,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-13 16:06:20,157 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.719298245614035) internal successors, (212), 57 states have internal predecessors, (212), 0 states have call successors, (0), 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 208 [2024-11-13 16:06:20,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:06:20,158 INFO L225 Difference]: With dead ends: 220 [2024-11-13 16:06:20,158 INFO L226 Difference]: Without dead ends: 218 [2024-11-13 16:06:20,158 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 362 SyntacticMatches, 102 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5554 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=4295, Invalid=7261, Unknown=0, NotChecked=0, Total=11556 [2024-11-13 16:06:20,158 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:06:20,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 37 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:06:20,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-13 16:06:20,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 212. [2024-11-13 16:06:20,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 1.009478672985782) internal successors, (213), 211 states have internal predecessors, (213), 0 states have call successors, (0), 0 states 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 16:06:20,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 213 transitions. [2024-11-13 16:06:20,177 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 213 transitions. Word has length 208 [2024-11-13 16:06:20,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:06:20,177 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 213 transitions. [2024-11-13 16:06:20,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.719298245614035) internal successors, (212), 57 states have internal predecessors, (212), 0 states have call successors, (0), 0 states 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 16:06:20,177 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 213 transitions. [2024-11-13 16:06:20,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-13 16:06:20,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:06:20,178 INFO L215 NwaCegarLoop]: trace histogram [52, 51, 51, 51, 1, 1, 1, 1, 1, 1] [2024-11-13 16:06:20,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2024-11-13 16:06:20,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2024-11-13 16:06:20,379 INFO L396 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:06:20,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:06:20,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1225035020, now seen corresponding path program 101 times [2024-11-13 16:06:20,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:06:20,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458433413] [2024-11-13 16:06:20,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:06:20,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:06:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:06:25,214 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 3776 proven. 1477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:25,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:06:25,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458433413] [2024-11-13 16:06:25,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458433413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:06:25,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478882457] [2024-11-13 16:06:25,215 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:06:25,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:06:25,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:06:25,216 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:06:25,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2024-11-13 16:06:25,743 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 52 check-sat command(s) [2024-11-13 16:06:25,743 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:06:25,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-11-13 16:06:25,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:06:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 3927 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:30,551 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:06:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5253 backedges. 3927 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:34,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478882457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:06:34,248 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:06:34,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107, 107] total 161 [2024-11-13 16:06:34,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390617648] [2024-11-13 16:06:34,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:06:34,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 161 states [2024-11-13 16:06:34,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:06:34,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 161 interpolants. [2024-11-13 16:06:34,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5782, Invalid=19978, Unknown=0, NotChecked=0, Total=25760 [2024-11-13 16:06:34,250 INFO L87 Difference]: Start difference. First operand 212 states and 213 transitions. Second operand has 161 states, 161 states have (on average 2.31055900621118) internal successors, (372), 161 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 16:06:35,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:06:35,226 INFO L93 Difference]: Finished difference Result 373 states and 375 transitions. [2024-11-13 16:06:35,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-11-13 16:06:35,227 INFO L78 Accepts]: Start accepts. Automaton has has 161 states, 161 states have (on average 2.31055900621118) internal successors, (372), 161 states have internal predecessors, (372), 0 states have call successors, (0), 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 211 [2024-11-13 16:06:35,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:06:35,228 INFO L225 Difference]: With dead ends: 373 [2024-11-13 16:06:35,228 INFO L226 Difference]: Without dead ends: 213 [2024-11-13 16:06:35,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 265 SyntacticMatches, 103 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16881 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=5782, Invalid=19978, Unknown=0, NotChecked=0, Total=25760 [2024-11-13 16:06:35,229 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:06:35,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 747 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:06:35,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-13 16:06:35,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-11-13 16:06:35,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.009433962264151) internal successors, (214), 212 states have internal predecessors, (214), 0 states have call successors, (0), 0 states 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 16:06:35,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 214 transitions. [2024-11-13 16:06:35,246 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 214 transitions. Word has length 211 [2024-11-13 16:06:35,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:06:35,246 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 214 transitions. [2024-11-13 16:06:35,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 161 states, 161 states have (on average 2.31055900621118) internal successors, (372), 161 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 16:06:35,246 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 214 transitions. [2024-11-13 16:06:35,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2024-11-13 16:06:35,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:06:35,247 INFO L215 NwaCegarLoop]: trace histogram [52, 52, 51, 51, 1, 1, 1, 1, 1, 1] [2024-11-13 16:06:35,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2024-11-13 16:06:35,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2024-11-13 16:06:35,447 INFO L396 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:06:35,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:06:35,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1906237608, now seen corresponding path program 102 times [2024-11-13 16:06:35,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:06:35,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835777024] [2024-11-13 16:06:35,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:06:35,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:06:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:06:37,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5305 backedges. 1326 proven. 3979 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:37,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:06:37,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835777024] [2024-11-13 16:06:37,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835777024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:06:37,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168859381] [2024-11-13 16:06:37,988 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:06:37,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:06:37,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:06:37,989 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:06:37,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2024-11-13 16:06:38,534 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 52 check-sat command(s) [2024-11-13 16:06:38,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:06:38,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-13 16:06:38,543 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:06:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 5305 backedges. 1378 proven. 3927 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:38,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:06:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5305 backedges. 1378 proven. 3927 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:41,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168859381] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:06:41,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:06:41,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 58 [2024-11-13 16:06:41,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168275254] [2024-11-13 16:06:41,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:06:41,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-13 16:06:41,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:06:41,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-13 16:06:41,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1493, Invalid=1813, Unknown=0, NotChecked=0, Total=3306 [2024-11-13 16:06:41,245 INFO L87 Difference]: Start difference. First operand 213 states and 214 transitions. Second operand has 58 states, 58 states have (on average 3.7241379310344827) internal successors, (216), 58 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 16:06:42,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:06:42,421 INFO L93 Difference]: Finished difference Result 224 states and 225 transitions. [2024-11-13 16:06:42,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2024-11-13 16:06:42,421 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.7241379310344827) internal successors, (216), 58 states have internal predecessors, (216), 0 states have call successors, (0), 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 212 [2024-11-13 16:06:42,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:06:42,423 INFO L225 Difference]: With dead ends: 224 [2024-11-13 16:06:42,423 INFO L226 Difference]: Without dead ends: 222 [2024-11-13 16:06:42,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 369 SyntacticMatches, 104 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5767 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4457, Invalid=7533, Unknown=0, NotChecked=0, Total=11990 [2024-11-13 16:06:42,424 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:06:42,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 43 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:06:42,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2024-11-13 16:06:42,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 216. [2024-11-13 16:06:42,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.0093023255813953) internal successors, (217), 215 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:06:42,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 217 transitions. [2024-11-13 16:06:42,447 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 217 transitions. Word has length 212 [2024-11-13 16:06:42,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:06:42,447 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 217 transitions. [2024-11-13 16:06:42,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.7241379310344827) internal successors, (216), 58 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 16:06:42,448 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 217 transitions. [2024-11-13 16:06:42,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-13 16:06:42,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:06:42,448 INFO L215 NwaCegarLoop]: trace histogram [53, 52, 52, 52, 1, 1, 1, 1, 1, 1] [2024-11-13 16:06:42,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2024-11-13 16:06:42,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2024-11-13 16:06:42,649 INFO L396 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:06:42,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:06:42,649 INFO L85 PathProgramCache]: Analyzing trace with hash 671810511, now seen corresponding path program 103 times [2024-11-13 16:06:42,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:06:42,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461393751] [2024-11-13 16:06:42,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:06:42,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:06:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:06:47,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 3928 proven. 1532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:47,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:06:47,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461393751] [2024-11-13 16:06:47,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461393751] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:06:47,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673968717] [2024-11-13 16:06:47,657 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:06:47,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:06:47,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:06:47,658 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:06:47,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2024-11-13 16:06:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:06:48,101 INFO L255 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 108 conjuncts are in the unsatisfiable core [2024-11-13 16:06:48,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:06:53,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 4082 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:53,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:06:56,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5460 backedges. 4082 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:06:56,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673968717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:06:56,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:06:56,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109, 109] total 164 [2024-11-13 16:06:56,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120948079] [2024-11-13 16:06:56,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:06:56,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2024-11-13 16:06:56,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:06:56,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2024-11-13 16:06:56,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5999, Invalid=20733, Unknown=0, NotChecked=0, Total=26732 [2024-11-13 16:06:56,870 INFO L87 Difference]: Start difference. First operand 216 states and 217 transitions. Second operand has 164 states, 164 states have (on average 2.3109756097560976) internal successors, (379), 164 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 16:06:57,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:06:57,807 INFO L93 Difference]: Finished difference Result 380 states and 382 transitions. [2024-11-13 16:06:57,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-11-13 16:06:57,808 INFO L78 Accepts]: Start accepts. Automaton has has 164 states, 164 states have (on average 2.3109756097560976) internal successors, (379), 164 states have internal predecessors, (379), 0 states have call successors, (0), 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 215 [2024-11-13 16:06:57,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:06:57,809 INFO L225 Difference]: With dead ends: 380 [2024-11-13 16:06:57,809 INFO L226 Difference]: Without dead ends: 217 [2024-11-13 16:06:57,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 537 GetRequests, 270 SyntacticMatches, 105 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17524 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=5999, Invalid=20733, Unknown=0, NotChecked=0, Total=26732 [2024-11-13 16:06:57,810 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:06:57,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 693 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:06:57,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-13 16:06:57,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2024-11-13 16:06:57,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.0092592592592593) internal successors, (218), 216 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 16:06:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2024-11-13 16:06:57,832 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 215 [2024-11-13 16:06:57,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:06:57,832 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2024-11-13 16:06:57,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 2.3109756097560976) internal successors, (379), 164 states have internal predecessors, (379), 0 states have call successors, (0), 0 states 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 16:06:57,833 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2024-11-13 16:06:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-13 16:06:57,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:06:57,833 INFO L215 NwaCegarLoop]: trace histogram [53, 53, 52, 52, 1, 1, 1, 1, 1, 1] [2024-11-13 16:06:57,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2024-11-13 16:06:58,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2024-11-13 16:06:58,034 INFO L396 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:06:58,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:06:58,034 INFO L85 PathProgramCache]: Analyzing trace with hash 232401259, now seen corresponding path program 104 times [2024-11-13 16:06:58,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:06:58,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782647081] [2024-11-13 16:06:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:06:58,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:06:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 1378 proven. 4135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:00,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782647081] [2024-11-13 16:07:00,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782647081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:00,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249257086] [2024-11-13 16:07:00,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:07:00,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:00,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:00,653 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:00,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2024-11-13 16:07:01,101 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:07:01,101 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:01,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-11-13 16:07:01,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:01,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 1431 proven. 4082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:01,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5513 backedges. 1431 proven. 4082 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:03,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249257086] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:03,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:03,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 59 [2024-11-13 16:07:03,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164987568] [2024-11-13 16:07:03,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:03,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-11-13 16:07:03,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:03,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-11-13 16:07:03,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1548, Invalid=1874, Unknown=0, NotChecked=0, Total=3422 [2024-11-13 16:07:03,895 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand has 59 states, 59 states have (on average 3.7288135593220337) internal successors, (220), 59 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 16:07:05,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:07:05,096 INFO L93 Difference]: Finished difference Result 228 states and 229 transitions. [2024-11-13 16:07:05,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2024-11-13 16:07:05,096 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.7288135593220337) internal successors, (220), 59 states have internal predecessors, (220), 0 states have call successors, (0), 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 216 [2024-11-13 16:07:05,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:07:05,097 INFO L225 Difference]: With dead ends: 228 [2024-11-13 16:07:05,097 INFO L226 Difference]: Without dead ends: 226 [2024-11-13 16:07:05,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 375 SyntacticMatches, 107 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6037 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=4622, Invalid=7810, Unknown=0, NotChecked=0, Total=12432 [2024-11-13 16:07:05,098 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:07:05,098 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:07:05,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2024-11-13 16:07:05,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 220. [2024-11-13 16:07:05,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 1.0091324200913243) internal successors, (221), 219 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:05,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 221 transitions. [2024-11-13 16:07:05,130 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 221 transitions. Word has length 216 [2024-11-13 16:07:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:07:05,130 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 221 transitions. [2024-11-13 16:07:05,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.7288135593220337) internal successors, (220), 59 states have internal predecessors, (220), 0 states have call successors, (0), 0 states 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 16:07:05,131 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 221 transitions. [2024-11-13 16:07:05,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-13 16:07:05,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:07:05,132 INFO L215 NwaCegarLoop]: trace histogram [54, 53, 53, 53, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:05,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2024-11-13 16:07:05,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2024-11-13 16:07:05,332 INFO L396 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:07:05,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:05,332 INFO L85 PathProgramCache]: Analyzing trace with hash -16555988, now seen corresponding path program 105 times [2024-11-13 16:07:05,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:05,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379651562] [2024-11-13 16:07:05,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:05,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:10,664 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 4083 proven. 1588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:10,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:10,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379651562] [2024-11-13 16:07:10,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379651562] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:10,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603544898] [2024-11-13 16:07:10,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:07:10,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:10,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:10,666 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:10,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2024-11-13 16:07:11,271 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 54 check-sat command(s) [2024-11-13 16:07:11,271 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:11,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-13 16:07:11,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 4240 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:16,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:20,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5671 backedges. 4240 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:20,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603544898] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:20,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:20,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111, 111] total 167 [2024-11-13 16:07:20,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173314673] [2024-11-13 16:07:20,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:20,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 167 states [2024-11-13 16:07:20,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:20,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2024-11-13 16:07:20,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6220, Invalid=21502, Unknown=0, NotChecked=0, Total=27722 [2024-11-13 16:07:20,365 INFO L87 Difference]: Start difference. First operand 220 states and 221 transitions. Second operand has 167 states, 167 states have (on average 2.311377245508982) internal successors, (386), 167 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 16:07:21,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:07:21,433 INFO L93 Difference]: Finished difference Result 387 states and 389 transitions. [2024-11-13 16:07:21,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-13 16:07:21,433 INFO L78 Accepts]: Start accepts. Automaton has has 167 states, 167 states have (on average 2.311377245508982) internal successors, (386), 167 states have internal predecessors, (386), 0 states have call successors, (0), 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 219 [2024-11-13 16:07:21,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:07:21,435 INFO L225 Difference]: With dead ends: 387 [2024-11-13 16:07:21,435 INFO L226 Difference]: Without dead ends: 221 [2024-11-13 16:07:21,436 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 275 SyntacticMatches, 107 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18179 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=6220, Invalid=21502, Unknown=0, NotChecked=0, Total=27722 [2024-11-13 16:07:21,436 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:07:21,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 748 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:07:21,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-13 16:07:21,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2024-11-13 16:07:21,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.009090909090909) internal successors, (222), 220 states have internal predecessors, (222), 0 states have call successors, (0), 0 states 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 16:07:21,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 222 transitions. [2024-11-13 16:07:21,458 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 222 transitions. Word has length 219 [2024-11-13 16:07:21,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:07:21,458 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 222 transitions. [2024-11-13 16:07:21,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 167 states, 167 states have (on average 2.311377245508982) internal successors, (386), 167 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 16:07:21,458 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 222 transitions. [2024-11-13 16:07:21,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-13 16:07:21,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:07:21,459 INFO L215 NwaCegarLoop]: trace histogram [54, 54, 53, 53, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:21,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2024-11-13 16:07:21,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2024-11-13 16:07:21,659 INFO L396 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:07:21,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:21,660 INFO L85 PathProgramCache]: Analyzing trace with hash 2001622984, now seen corresponding path program 106 times [2024-11-13 16:07:21,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:21,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045865522] [2024-11-13 16:07:21,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:21,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5725 backedges. 1431 proven. 4294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:24,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:24,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045865522] [2024-11-13 16:07:24,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045865522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:24,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383162451] [2024-11-13 16:07:24,456 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:07:24,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:24,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:24,458 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:24,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2024-11-13 16:07:24,952 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:07:24,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:24,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-13 16:07:24,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:25,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5725 backedges. 1485 proven. 4240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:25,219 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:28,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5725 backedges. 1485 proven. 4240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:28,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383162451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:28,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:28,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 60 [2024-11-13 16:07:28,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24306787] [2024-11-13 16:07:28,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:28,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-13 16:07:28,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:28,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-13 16:07:28,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1604, Invalid=1936, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 16:07:28,017 INFO L87 Difference]: Start difference. First operand 221 states and 222 transitions. Second operand has 60 states, 60 states have (on average 3.7333333333333334) internal successors, (224), 60 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 16:07:29,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:07:29,403 INFO L93 Difference]: Finished difference Result 232 states and 233 transitions. [2024-11-13 16:07:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-13 16:07:29,403 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.7333333333333334) internal successors, (224), 60 states have internal predecessors, (224), 0 states have call successors, (0), 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 220 [2024-11-13 16:07:29,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:07:29,405 INFO L225 Difference]: With dead ends: 232 [2024-11-13 16:07:29,405 INFO L226 Difference]: Without dead ends: 230 [2024-11-13 16:07:29,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 603 GetRequests, 383 SyntacticMatches, 108 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6205 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4790, Invalid=8092, Unknown=0, NotChecked=0, Total=12882 [2024-11-13 16:07:29,406 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:07:29,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 38 Invalid, 558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:07:29,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-13 16:07:29,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 224. [2024-11-13 16:07:29,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.0089686098654709) internal successors, (225), 223 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 225 transitions. [2024-11-13 16:07:29,429 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 225 transitions. Word has length 220 [2024-11-13 16:07:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:07:29,430 INFO L471 AbstractCegarLoop]: Abstraction has 224 states and 225 transitions. [2024-11-13 16:07:29,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.7333333333333334) internal successors, (224), 60 states have internal predecessors, (224), 0 states have call successors, (0), 0 states 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 16:07:29,430 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 225 transitions. [2024-11-13 16:07:29,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-13 16:07:29,430 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:07:29,431 INFO L215 NwaCegarLoop]: trace histogram [55, 54, 54, 54, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:29,452 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2024-11-13 16:07:29,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2024-11-13 16:07:29,631 INFO L396 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:07:29,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:29,631 INFO L85 PathProgramCache]: Analyzing trace with hash -970803025, now seen corresponding path program 107 times [2024-11-13 16:07:29,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:29,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626413140] [2024-11-13 16:07:29,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:29,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:35,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 4241 proven. 1645 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:35,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:35,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626413140] [2024-11-13 16:07:35,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626413140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:35,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318016420] [2024-11-13 16:07:35,234 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:07:35,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:35,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:35,235 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:35,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2024-11-13 16:07:35,815 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 55 check-sat command(s) [2024-11-13 16:07:35,815 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:35,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-13 16:07:35,824 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:41,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 4401 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:41,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:45,298 INFO L134 CoverageAnalysis]: Checked inductivity of 5886 backedges. 4401 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:45,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318016420] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:45,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:45,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113, 113] total 170 [2024-11-13 16:07:45,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457109493] [2024-11-13 16:07:45,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:45,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 170 states [2024-11-13 16:07:45,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:45,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants. [2024-11-13 16:07:45,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6445, Invalid=22285, Unknown=0, NotChecked=0, Total=28730 [2024-11-13 16:07:45,301 INFO L87 Difference]: Start difference. First operand 224 states and 225 transitions. Second operand has 170 states, 170 states have (on average 2.3117647058823527) internal successors, (393), 170 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 16:07:46,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:07:46,227 INFO L93 Difference]: Finished difference Result 394 states and 396 transitions. [2024-11-13 16:07:46,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2024-11-13 16:07:46,228 INFO L78 Accepts]: Start accepts. Automaton has has 170 states, 170 states have (on average 2.3117647058823527) internal successors, (393), 170 states have internal predecessors, (393), 0 states have call successors, (0), 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 223 [2024-11-13 16:07:46,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:07:46,229 INFO L225 Difference]: With dead ends: 394 [2024-11-13 16:07:46,229 INFO L226 Difference]: Without dead ends: 225 [2024-11-13 16:07:46,230 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 280 SyntacticMatches, 109 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18846 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=6445, Invalid=22285, Unknown=0, NotChecked=0, Total=28730 [2024-11-13 16:07:46,230 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:07:46,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 668 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:07:46,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-13 16:07:46,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2024-11-13 16:07:46,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.0089285714285714) internal successors, (226), 224 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 16:07:46,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2024-11-13 16:07:46,264 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 223 [2024-11-13 16:07:46,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:07:46,264 INFO L471 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2024-11-13 16:07:46,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 170 states, 170 states have (on average 2.3117647058823527) internal successors, (393), 170 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 16:07:46,265 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2024-11-13 16:07:46,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-13 16:07:46,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:07:46,265 INFO L215 NwaCegarLoop]: trace histogram [55, 55, 54, 54, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:46,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2024-11-13 16:07:46,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:46,466 INFO L396 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:07:46,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:46,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1431272885, now seen corresponding path program 108 times [2024-11-13 16:07:46,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:46,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585245479] [2024-11-13 16:07:46,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:46,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:07:49,293 INFO L134 CoverageAnalysis]: Checked inductivity of 5941 backedges. 1485 proven. 4456 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:49,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:07:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585245479] [2024-11-13 16:07:49,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585245479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:07:49,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025287590] [2024-11-13 16:07:49,293 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:07:49,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:49,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:07:49,295 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:07:49,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2024-11-13 16:07:49,911 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2024-11-13 16:07:49,911 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:07:49,916 INFO L255 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-13 16:07:49,919 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:07:50,174 INFO L134 CoverageAnalysis]: Checked inductivity of 5941 backedges. 1540 proven. 4401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:50,174 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:07:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5941 backedges. 1540 proven. 4401 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:07:52,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025287590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:07:52,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:07:52,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59, 59] total 61 [2024-11-13 16:07:52,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738705413] [2024-11-13 16:07:52,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:07:52,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-13 16:07:52,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:07:52,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-13 16:07:52,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1661, Invalid=1999, Unknown=0, NotChecked=0, Total=3660 [2024-11-13 16:07:52,871 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand has 61 states, 61 states have (on average 3.737704918032787) internal successors, (228), 61 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 16:07:54,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:07:54,138 INFO L93 Difference]: Finished difference Result 236 states and 237 transitions. [2024-11-13 16:07:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-11-13 16:07:54,138 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 3.737704918032787) internal successors, (228), 61 states have internal predecessors, (228), 0 states have call successors, (0), 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 224 [2024-11-13 16:07:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:07:54,139 INFO L225 Difference]: With dead ends: 236 [2024-11-13 16:07:54,139 INFO L226 Difference]: Without dead ends: 234 [2024-11-13 16:07:54,140 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 614 GetRequests, 390 SyntacticMatches, 110 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6430 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4961, Invalid=8379, Unknown=0, NotChecked=0, Total=13340 [2024-11-13 16:07:54,140 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:07:54,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:07:54,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-13 16:07:54,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 228. [2024-11-13 16:07:54,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.0088105726872247) internal successors, (229), 227 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:07:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 229 transitions. [2024-11-13 16:07:54,158 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 229 transitions. Word has length 224 [2024-11-13 16:07:54,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:07:54,159 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 229 transitions. [2024-11-13 16:07:54,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 3.737704918032787) internal successors, (228), 61 states have internal predecessors, (228), 0 states have call successors, (0), 0 states 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 16:07:54,159 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 229 transitions. [2024-11-13 16:07:54,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-13 16:07:54,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:07:54,159 INFO L215 NwaCegarLoop]: trace histogram [56, 55, 55, 55, 1, 1, 1, 1, 1, 1] [2024-11-13 16:07:54,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2024-11-13 16:07:54,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:07:54,360 INFO L396 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:07:54,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:07:54,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1389615948, now seen corresponding path program 109 times [2024-11-13 16:07:54,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:07:54,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536375418] [2024-11-13 16:07:54,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:07:54,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:07:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:00,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 4402 proven. 1703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:00,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:00,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536375418] [2024-11-13 16:08:00,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536375418] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:00,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254379163] [2024-11-13 16:08:00,592 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:08:00,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:00,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:00,593 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:00,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2024-11-13 16:08:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:01,078 INFO L255 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-13 16:08:01,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 4565 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:06,516 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6105 backedges. 4565 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:10,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254379163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:10,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:10,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115, 115] total 173 [2024-11-13 16:08:10,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156439429] [2024-11-13 16:08:10,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:10,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2024-11-13 16:08:10,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:10,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2024-11-13 16:08:10,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6674, Invalid=23082, Unknown=0, NotChecked=0, Total=29756 [2024-11-13 16:08:10,831 INFO L87 Difference]: Start difference. First operand 228 states and 229 transitions. Second operand has 173 states, 173 states have (on average 2.3121387283236996) internal successors, (400), 173 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 16:08:11,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:08:11,758 INFO L93 Difference]: Finished difference Result 401 states and 403 transitions. [2024-11-13 16:08:11,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2024-11-13 16:08:11,759 INFO L78 Accepts]: Start accepts. Automaton has has 173 states, 173 states have (on average 2.3121387283236996) internal successors, (400), 173 states have internal predecessors, (400), 0 states have call successors, (0), 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 227 [2024-11-13 16:08:11,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:08:11,760 INFO L225 Difference]: With dead ends: 401 [2024-11-13 16:08:11,760 INFO L226 Difference]: Without dead ends: 229 [2024-11-13 16:08:11,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 285 SyntacticMatches, 111 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19525 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=6674, Invalid=23082, Unknown=0, NotChecked=0, Total=29756 [2024-11-13 16:08:11,762 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:08:11,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 673 Invalid, 1338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:08:11,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-13 16:08:11,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2024-11-13 16:08:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 228 states have (on average 1.0087719298245614) internal successors, (230), 228 states have internal predecessors, (230), 0 states have call successors, (0), 0 states 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 16:08:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 230 transitions. [2024-11-13 16:08:11,781 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 230 transitions. Word has length 227 [2024-11-13 16:08:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:08:11,781 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 230 transitions. [2024-11-13 16:08:11,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 173 states, 173 states have (on average 2.3121387283236996) internal successors, (400), 173 states have internal predecessors, (400), 0 states have call successors, (0), 0 states 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 16:08:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 230 transitions. [2024-11-13 16:08:11,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-13 16:08:11,782 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:08:11,782 INFO L215 NwaCegarLoop]: trace histogram [56, 56, 55, 55, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:11,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2024-11-13 16:08:11,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:11,983 INFO L396 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:08:11,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:11,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1105950440, now seen corresponding path program 110 times [2024-11-13 16:08:11,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:11,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005656976] [2024-11-13 16:08:11,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:11,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6161 backedges. 1540 proven. 4621 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:14,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:14,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005656976] [2024-11-13 16:08:14,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005656976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:14,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371240045] [2024-11-13 16:08:14,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:08:14,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:14,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:14,917 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:14,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2024-11-13 16:08:15,405 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:08:15,405 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:15,410 INFO L255 TraceCheckSpWp]: Trace formula consists of 864 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-13 16:08:15,412 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:15,673 INFO L134 CoverageAnalysis]: Checked inductivity of 6161 backedges. 1596 proven. 4565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:15,673 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:18,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6161 backedges. 1596 proven. 4565 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:18,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371240045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:18,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:18,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 62 [2024-11-13 16:08:18,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243474856] [2024-11-13 16:08:18,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:18,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-13 16:08:18,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:18,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-13 16:08:18,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1719, Invalid=2063, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 16:08:18,490 INFO L87 Difference]: Start difference. First operand 229 states and 230 transitions. Second operand has 62 states, 62 states have (on average 3.7419354838709675) internal successors, (232), 62 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:19,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:08:19,807 INFO L93 Difference]: Finished difference Result 240 states and 241 transitions. [2024-11-13 16:08:19,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2024-11-13 16:08:19,807 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 3.7419354838709675) internal successors, (232), 62 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 228 [2024-11-13 16:08:19,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:08:19,809 INFO L225 Difference]: With dead ends: 240 [2024-11-13 16:08:19,809 INFO L226 Difference]: Without dead ends: 238 [2024-11-13 16:08:19,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 396 SyntacticMatches, 113 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6715 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=5135, Invalid=8671, Unknown=0, NotChecked=0, Total=13806 [2024-11-13 16:08:19,809 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:08:19,810 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 37 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:08:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-13 16:08:19,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 232. [2024-11-13 16:08:19,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.0086580086580086) internal successors, (233), 231 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 233 transitions. [2024-11-13 16:08:19,828 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 233 transitions. Word has length 228 [2024-11-13 16:08:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:08:19,828 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 233 transitions. [2024-11-13 16:08:19,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 3.7419354838709675) internal successors, (232), 62 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:19,828 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 233 transitions. [2024-11-13 16:08:19,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-13 16:08:19,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:08:19,828 INFO L215 NwaCegarLoop]: trace histogram [57, 56, 56, 56, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:19,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2024-11-13 16:08:20,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:20,029 INFO L396 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:08:20,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:20,029 INFO L85 PathProgramCache]: Analyzing trace with hash 680248719, now seen corresponding path program 111 times [2024-11-13 16:08:20,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:20,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098875998] [2024-11-13 16:08:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:20,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:20,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:25,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 4566 proven. 1762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:25,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:25,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098875998] [2024-11-13 16:08:25,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098875998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:25,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095950214] [2024-11-13 16:08:25,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:08:25,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:25,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:25,819 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:25,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2024-11-13 16:08:26,477 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 57 check-sat command(s) [2024-11-13 16:08:26,477 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:26,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-13 16:08:26,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 4732 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:32,202 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6328 backedges. 4732 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:36,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095950214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:36,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:36,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117, 117] total 176 [2024-11-13 16:08:36,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509685326] [2024-11-13 16:08:36,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:36,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 176 states [2024-11-13 16:08:36,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:36,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 176 interpolants. [2024-11-13 16:08:36,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6907, Invalid=23893, Unknown=0, NotChecked=0, Total=30800 [2024-11-13 16:08:36,599 INFO L87 Difference]: Start difference. First operand 232 states and 233 transitions. Second operand has 176 states, 176 states have (on average 2.3125) internal successors, (407), 176 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 16:08:37,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:08:37,426 INFO L93 Difference]: Finished difference Result 408 states and 410 transitions. [2024-11-13 16:08:37,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-11-13 16:08:37,426 INFO L78 Accepts]: Start accepts. Automaton has has 176 states, 176 states have (on average 2.3125) internal successors, (407), 176 states have internal predecessors, (407), 0 states have call successors, (0), 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 231 [2024-11-13 16:08:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:08:37,427 INFO L225 Difference]: With dead ends: 408 [2024-11-13 16:08:37,428 INFO L226 Difference]: Without dead ends: 233 [2024-11-13 16:08:37,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 290 SyntacticMatches, 113 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20216 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=6907, Invalid=23893, Unknown=0, NotChecked=0, Total=30800 [2024-11-13 16:08:37,428 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 0 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:08:37,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 521 Invalid, 1058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:08:37,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-13 16:08:37,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2024-11-13 16:08:37,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 232 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:37,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2024-11-13 16:08:37,447 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 231 [2024-11-13 16:08:37,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:08:37,448 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2024-11-13 16:08:37,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 176 states, 176 states have (on average 2.3125) internal successors, (407), 176 states have internal predecessors, (407), 0 states have call successors, (0), 0 states 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 16:08:37,448 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2024-11-13 16:08:37,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-13 16:08:37,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:08:37,448 INFO L215 NwaCegarLoop]: trace histogram [57, 57, 56, 56, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:37,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2024-11-13 16:08:37,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2024-11-13 16:08:37,649 INFO L396 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:08:37,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:37,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1156854571, now seen corresponding path program 112 times [2024-11-13 16:08:37,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:37,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654046423] [2024-11-13 16:08:37,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:37,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6385 backedges. 1596 proven. 4789 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:40,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:40,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654046423] [2024-11-13 16:08:40,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654046423] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:40,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159453891] [2024-11-13 16:08:40,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:08:40,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:40,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:40,796 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:40,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2024-11-13 16:08:41,314 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:08:41,314 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:41,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-13 16:08:41,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6385 backedges. 1653 proven. 4732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:41,586 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:08:44,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6385 backedges. 1653 proven. 4732 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:44,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159453891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:08:44,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:08:44,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61, 61] total 63 [2024-11-13 16:08:44,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793426978] [2024-11-13 16:08:44,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:08:44,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-13 16:08:44,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:08:44,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-13 16:08:44,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1778, Invalid=2128, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 16:08:44,463 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand has 63 states, 63 states have (on average 3.746031746031746) internal successors, (236), 63 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 16:08:45,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:08:45,794 INFO L93 Difference]: Finished difference Result 244 states and 245 transitions. [2024-11-13 16:08:45,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2024-11-13 16:08:45,795 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.746031746031746) internal successors, (236), 63 states have internal predecessors, (236), 0 states have call successors, (0), 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 232 [2024-11-13 16:08:45,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:08:45,796 INFO L225 Difference]: With dead ends: 244 [2024-11-13 16:08:45,796 INFO L226 Difference]: Without dead ends: 242 [2024-11-13 16:08:45,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 404 SyntacticMatches, 114 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6892 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=5312, Invalid=8968, Unknown=0, NotChecked=0, Total=14280 [2024-11-13 16:08:45,797 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:08:45,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:08:45,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-13 16:08:45,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 236. [2024-11-13 16:08:45,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.0085106382978724) internal successors, (237), 235 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:08:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 237 transitions. [2024-11-13 16:08:45,816 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 237 transitions. Word has length 232 [2024-11-13 16:08:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:08:45,816 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 237 transitions. [2024-11-13 16:08:45,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.746031746031746) internal successors, (236), 63 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 16:08:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 237 transitions. [2024-11-13 16:08:45,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-11-13 16:08:45,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:08:45,817 INFO L215 NwaCegarLoop]: trace histogram [58, 57, 57, 57, 1, 1, 1, 1, 1, 1] [2024-11-13 16:08:45,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2024-11-13 16:08:46,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:46,017 INFO L396 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:08:46,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:08:46,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1041759852, now seen corresponding path program 113 times [2024-11-13 16:08:46,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:08:46,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563344207] [2024-11-13 16:08:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:08:46,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:08:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:08:52,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 4733 proven. 1822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:52,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:08:52,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563344207] [2024-11-13 16:08:52,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563344207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:08:52,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912846882] [2024-11-13 16:08:52,204 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:08:52,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:08:52,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:08:52,206 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:08:52,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2024-11-13 16:08:52,851 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 58 check-sat command(s) [2024-11-13 16:08:52,851 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:08:52,858 INFO L255 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-13 16:08:52,860 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:08:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 4902 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:08:58,671 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:09:03,458 INFO L134 CoverageAnalysis]: Checked inductivity of 6555 backedges. 4902 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:03,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912846882] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:09:03,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:09:03,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119, 119] total 179 [2024-11-13 16:09:03,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854315050] [2024-11-13 16:09:03,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:09:03,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 179 states [2024-11-13 16:09:03,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:09:03,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 179 interpolants. [2024-11-13 16:09:03,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7144, Invalid=24718, Unknown=0, NotChecked=0, Total=31862 [2024-11-13 16:09:03,462 INFO L87 Difference]: Start difference. First operand 236 states and 237 transitions. Second operand has 179 states, 179 states have (on average 2.3128491620111733) internal successors, (414), 179 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 16:09:05,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:09:05,017 INFO L93 Difference]: Finished difference Result 415 states and 417 transitions. [2024-11-13 16:09:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2024-11-13 16:09:05,017 INFO L78 Accepts]: Start accepts. Automaton has has 179 states, 179 states have (on average 2.3128491620111733) internal successors, (414), 179 states have internal predecessors, (414), 0 states have call successors, (0), 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 235 [2024-11-13 16:09:05,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:09:05,018 INFO L225 Difference]: With dead ends: 415 [2024-11-13 16:09:05,018 INFO L226 Difference]: Without dead ends: 237 [2024-11-13 16:09:05,020 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 295 SyntacticMatches, 115 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20919 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=7144, Invalid=24718, Unknown=0, NotChecked=0, Total=31862 [2024-11-13 16:09:05,021 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 0 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 1704 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 1704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:09:05,021 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 860 Invalid, 1704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1704 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 16:09:05,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-13 16:09:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2024-11-13 16:09:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.0084745762711864) internal successors, (238), 236 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:09:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 238 transitions. [2024-11-13 16:09:05,046 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 238 transitions. Word has length 235 [2024-11-13 16:09:05,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:09:05,046 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 238 transitions. [2024-11-13 16:09:05,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 179 states, 179 states have (on average 2.3128491620111733) internal successors, (414), 179 states have internal predecessors, (414), 0 states have call successors, (0), 0 states 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 16:09:05,046 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 238 transitions. [2024-11-13 16:09:05,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-13 16:09:05,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:09:05,047 INFO L215 NwaCegarLoop]: trace histogram [58, 58, 57, 57, 1, 1, 1, 1, 1, 1] [2024-11-13 16:09:05,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2024-11-13 16:09:05,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2024-11-13 16:09:05,247 INFO L396 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:09:05,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:09:05,248 INFO L85 PathProgramCache]: Analyzing trace with hash -283623928, now seen corresponding path program 114 times [2024-11-13 16:09:05,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:09:05,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781422350] [2024-11-13 16:09:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:09:05,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:09:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:09:09,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6613 backedges. 1653 proven. 4960 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:09,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:09:09,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781422350] [2024-11-13 16:09:09,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781422350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:09:09,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471820592] [2024-11-13 16:09:09,070 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:09:09,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:09:09,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:09:09,072 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:09:09,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2024-11-13 16:09:09,923 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2024-11-13 16:09:09,923 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:09:09,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-13 16:09:09,932 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:09:10,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6613 backedges. 1711 proven. 4902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:10,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:09:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6613 backedges. 1711 proven. 4902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:13,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471820592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:09:13,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:09:13,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 64 [2024-11-13 16:09:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153476771] [2024-11-13 16:09:13,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:09:13,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-13 16:09:13,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:09:13,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-13 16:09:13,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1838, Invalid=2194, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 16:09:13,425 INFO L87 Difference]: Start difference. First operand 237 states and 238 transitions. Second operand has 64 states, 64 states have (on average 3.75) internal successors, (240), 64 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:09:14,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:09:14,794 INFO L93 Difference]: Finished difference Result 248 states and 249 transitions. [2024-11-13 16:09:14,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2024-11-13 16:09:14,795 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.75) internal successors, (240), 64 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2024-11-13 16:09:14,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:09:14,796 INFO L225 Difference]: With dead ends: 248 [2024-11-13 16:09:14,796 INFO L226 Difference]: Without dead ends: 246 [2024-11-13 16:09:14,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 647 GetRequests, 411 SyntacticMatches, 116 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7129 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=5492, Invalid=9270, Unknown=0, NotChecked=0, Total=14762 [2024-11-13 16:09:14,797 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:09:14,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:09:14,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-13 16:09:14,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 240. [2024-11-13 16:09:14,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 1.00836820083682) internal successors, (241), 239 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:09:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 241 transitions. [2024-11-13 16:09:14,823 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 241 transitions. Word has length 236 [2024-11-13 16:09:14,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:09:14,823 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 241 transitions. [2024-11-13 16:09:14,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.75) internal successors, (240), 64 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:09:14,823 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 241 transitions. [2024-11-13 16:09:14,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2024-11-13 16:09:14,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:09:14,824 INFO L215 NwaCegarLoop]: trace histogram [59, 58, 58, 58, 1, 1, 1, 1, 1, 1] [2024-11-13 16:09:14,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2024-11-13 16:09:15,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:09:15,024 INFO L396 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:09:15,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:09:15,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1234949521, now seen corresponding path program 115 times [2024-11-13 16:09:15,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:09:15,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359517599] [2024-11-13 16:09:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:09:15,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:09:15,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:09:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 4903 proven. 1883 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:21,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:09:21,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359517599] [2024-11-13 16:09:21,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359517599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:09:21,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705032841] [2024-11-13 16:09:21,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:09:21,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:09:21,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:09:21,471 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:09:21,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2024-11-13 16:09:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:09:21,993 INFO L255 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 120 conjuncts are in the unsatisfiable core [2024-11-13 16:09:21,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:09:27,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 5075 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:27,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:09:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6786 backedges. 5075 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:32,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705032841] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:09:32,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:09:32,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121, 121] total 182 [2024-11-13 16:09:32,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837375338] [2024-11-13 16:09:32,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:09:32,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 182 states [2024-11-13 16:09:32,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:09:32,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 182 interpolants. [2024-11-13 16:09:32,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7385, Invalid=25557, Unknown=0, NotChecked=0, Total=32942 [2024-11-13 16:09:32,693 INFO L87 Difference]: Start difference. First operand 240 states and 241 transitions. Second operand has 182 states, 182 states have (on average 2.3131868131868134) internal successors, (421), 182 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 16:09:34,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:09:34,062 INFO L93 Difference]: Finished difference Result 422 states and 424 transitions. [2024-11-13 16:09:34,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-13 16:09:34,063 INFO L78 Accepts]: Start accepts. Automaton has has 182 states, 182 states have (on average 2.3131868131868134) internal successors, (421), 182 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2024-11-13 16:09:34,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:09:34,064 INFO L225 Difference]: With dead ends: 422 [2024-11-13 16:09:34,064 INFO L226 Difference]: Without dead ends: 241 [2024-11-13 16:09:34,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 300 SyntacticMatches, 117 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21634 ImplicationChecksByTransitivity, 14.4s TimeCoverageRelationStatistics Valid=7385, Invalid=25557, Unknown=0, NotChecked=0, Total=32942 [2024-11-13 16:09:34,066 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 0 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1978 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:09:34,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1000 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1978 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 16:09:34,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2024-11-13 16:09:34,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2024-11-13 16:09:34,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.0083333333333333) internal successors, (242), 240 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:09:34,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2024-11-13 16:09:34,091 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 239 [2024-11-13 16:09:34,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:09:34,092 INFO L471 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2024-11-13 16:09:34,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 182 states, 182 states have (on average 2.3131868131868134) internal successors, (421), 182 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 16:09:34,092 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2024-11-13 16:09:34,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2024-11-13 16:09:34,092 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:09:34,092 INFO L215 NwaCegarLoop]: trace histogram [59, 59, 58, 58, 1, 1, 1, 1, 1, 1] [2024-11-13 16:09:34,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2024-11-13 16:09:34,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:09:34,293 INFO L396 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:09:34,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:09:34,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1740848139, now seen corresponding path program 116 times [2024-11-13 16:09:34,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:09:34,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822964876] [2024-11-13 16:09:34,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:09:34,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:09:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:09:37,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6845 backedges. 1711 proven. 5134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:37,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:09:37,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822964876] [2024-11-13 16:09:37,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822964876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:09:37,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025071331] [2024-11-13 16:09:37,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:09:37,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:09:37,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:09:37,558 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:09:37,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2024-11-13 16:09:38,118 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:09:38,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:09:38,126 INFO L255 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 121 conjuncts are in the unsatisfiable core [2024-11-13 16:09:38,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:09:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6845 backedges. 1770 proven. 5075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:38,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:09:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6845 backedges. 1770 proven. 5075 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:41,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025071331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:09:41,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:09:41,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63, 63] total 65 [2024-11-13 16:09:41,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484559979] [2024-11-13 16:09:41,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:09:41,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-13 16:09:41,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:09:41,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-13 16:09:41,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1899, Invalid=2261, Unknown=0, NotChecked=0, Total=4160 [2024-11-13 16:09:41,540 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand has 65 states, 65 states have (on average 3.753846153846154) internal successors, (244), 65 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 16:09:42,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:09:42,952 INFO L93 Difference]: Finished difference Result 252 states and 253 transitions. [2024-11-13 16:09:42,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-11-13 16:09:42,952 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.753846153846154) internal successors, (244), 65 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 240 [2024-11-13 16:09:42,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:09:42,953 INFO L225 Difference]: With dead ends: 252 [2024-11-13 16:09:42,953 INFO L226 Difference]: Without dead ends: 250 [2024-11-13 16:09:42,954 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 417 SyntacticMatches, 119 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7429 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=5675, Invalid=9577, Unknown=0, NotChecked=0, Total=15252 [2024-11-13 16:09:42,954 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:09:42,955 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 44 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:09:42,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-13 16:09:42,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 244. [2024-11-13 16:09:42,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.008230452674897) internal successors, (245), 243 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 16:09:42,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 245 transitions. [2024-11-13 16:09:42,975 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 245 transitions. Word has length 240 [2024-11-13 16:09:42,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:09:42,976 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 245 transitions. [2024-11-13 16:09:42,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.753846153846154) internal successors, (244), 65 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 16:09:42,976 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 245 transitions. [2024-11-13 16:09:42,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-13 16:09:42,977 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:09:42,977 INFO L215 NwaCegarLoop]: trace histogram [60, 59, 59, 59, 1, 1, 1, 1, 1, 1] [2024-11-13 16:09:42,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2024-11-13 16:09:43,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:09:43,177 INFO L396 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:09:43,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:09:43,178 INFO L85 PathProgramCache]: Analyzing trace with hash -118371956, now seen corresponding path program 117 times [2024-11-13 16:09:43,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:09:43,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340890453] [2024-11-13 16:09:43,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:09:43,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:09:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:09:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 5076 proven. 1945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:49,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:09:49,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340890453] [2024-11-13 16:09:49,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340890453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:09:49,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249752075] [2024-11-13 16:09:49,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:09:49,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:09:49,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:09:49,725 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:09:49,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2024-11-13 16:09:50,475 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 60 check-sat command(s) [2024-11-13 16:09:50,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:09:50,481 INFO L255 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-13 16:09:50,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:09:56,683 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 5251 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:09:56,683 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:10:01,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7021 backedges. 5251 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:10:01,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249752075] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:10:01,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:10:01,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123, 123] total 185 [2024-11-13 16:10:01,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207719006] [2024-11-13 16:10:01,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:10:01,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 185 states [2024-11-13 16:10:01,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:10:01,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 185 interpolants. [2024-11-13 16:10:01,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7630, Invalid=26410, Unknown=0, NotChecked=0, Total=34040 [2024-11-13 16:10:01,588 INFO L87 Difference]: Start difference. First operand 244 states and 245 transitions. Second operand has 185 states, 185 states have (on average 2.3135135135135134) internal successors, (428), 185 states have internal predecessors, (428), 0 states have call successors, (0), 0 states 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 16:10:02,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:10:02,660 INFO L93 Difference]: Finished difference Result 429 states and 431 transitions. [2024-11-13 16:10:02,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2024-11-13 16:10:02,660 INFO L78 Accepts]: Start accepts. Automaton has has 185 states, 185 states have (on average 2.3135135135135134) internal successors, (428), 185 states have internal predecessors, (428), 0 states have call successors, (0), 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 243 [2024-11-13 16:10:02,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:10:02,661 INFO L225 Difference]: With dead ends: 429 [2024-11-13 16:10:02,661 INFO L226 Difference]: Without dead ends: 245 [2024-11-13 16:10:02,662 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 305 SyntacticMatches, 119 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22361 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=7630, Invalid=26410, Unknown=0, NotChecked=0, Total=34040 [2024-11-13 16:10:02,663 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 663 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:10:02,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 727 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 16:10:02,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-13 16:10:02,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2024-11-13 16:10:02,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 244 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 16:10:02,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 246 transitions. [2024-11-13 16:10:02,688 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 246 transitions. Word has length 243 [2024-11-13 16:10:02,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:10:02,688 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 246 transitions. [2024-11-13 16:10:02,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 185 states, 185 states have (on average 2.3135135135135134) internal successors, (428), 185 states have internal predecessors, (428), 0 states have call successors, (0), 0 states 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 16:10:02,689 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 246 transitions. [2024-11-13 16:10:02,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-13 16:10:02,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:10:02,689 INFO L215 NwaCegarLoop]: trace histogram [60, 60, 59, 59, 1, 1, 1, 1, 1, 1] [2024-11-13 16:10:02,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2024-11-13 16:10:02,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:10:02,890 INFO L396 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:10:02,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:10:02,890 INFO L85 PathProgramCache]: Analyzing trace with hash -621368024, now seen corresponding path program 118 times [2024-11-13 16:10:02,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:10:02,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216557766] [2024-11-13 16:10:02,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:10:02,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:10:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:10:06,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7081 backedges. 1770 proven. 5311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:10:06,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:10:06,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216557766] [2024-11-13 16:10:06,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216557766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:10:06,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198330022] [2024-11-13 16:10:06,283 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:10:06,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:10:06,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:10:06,284 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:10:06,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2024-11-13 16:10:06,847 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:10:06,847 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:10:06,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-13 16:10:06,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:10:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7081 backedges. 1830 proven. 5251 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:10:07,148 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:10:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7081 backedges. 1830 proven. 5251 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:10:10,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198330022] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:10:10,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:10:10,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 66 [2024-11-13 16:10:10,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39456884] [2024-11-13 16:10:10,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:10:10,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2024-11-13 16:10:10,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:10:10,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2024-11-13 16:10:10,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1961, Invalid=2329, Unknown=0, NotChecked=0, Total=4290 [2024-11-13 16:10:10,415 INFO L87 Difference]: Start difference. First operand 245 states and 246 transitions. Second operand has 66 states, 66 states have (on average 3.757575757575758) internal successors, (248), 66 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 16:10:11,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:10:11,908 INFO L93 Difference]: Finished difference Result 256 states and 257 transitions. [2024-11-13 16:10:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-13 16:10:11,908 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.757575757575758) internal successors, (248), 66 states have internal predecessors, (248), 0 states have call successors, (0), 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 244 [2024-11-13 16:10:11,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:10:11,909 INFO L225 Difference]: With dead ends: 256 [2024-11-13 16:10:11,909 INFO L226 Difference]: Without dead ends: 254 [2024-11-13 16:10:11,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 425 SyntacticMatches, 120 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7615 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=5861, Invalid=9889, Unknown=0, NotChecked=0, Total=15750 [2024-11-13 16:10:11,910 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:10:11,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 46 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:10:11,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-13 16:10:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 248. [2024-11-13 16:10:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.008097165991903) internal successors, (249), 247 states have internal predecessors, (249), 0 states have call successors, (0), 0 states 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 16:10:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 249 transitions. [2024-11-13 16:10:11,931 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 249 transitions. Word has length 244 [2024-11-13 16:10:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:10:11,932 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 249 transitions. [2024-11-13 16:10:11,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.757575757575758) internal successors, (248), 66 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 16:10:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 249 transitions. [2024-11-13 16:10:11,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2024-11-13 16:10:11,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:10:11,933 INFO L215 NwaCegarLoop]: trace histogram [61, 60, 60, 60, 1, 1, 1, 1, 1, 1] [2024-11-13 16:10:11,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2024-11-13 16:10:12,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:10:12,133 INFO L396 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:10:12,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:10:12,133 INFO L85 PathProgramCache]: Analyzing trace with hash 139061071, now seen corresponding path program 119 times [2024-11-13 16:10:12,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:10:12,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901099293] [2024-11-13 16:10:12,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:10:12,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:10:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:10:18,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 5252 proven. 2008 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:10:18,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:10:18,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901099293] [2024-11-13 16:10:18,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901099293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:10:18,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247301161] [2024-11-13 16:10:18,879 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:10:18,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:10:18,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:10:18,880 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:10:18,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2024-11-13 16:10:19,624 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 61 check-sat command(s) [2024-11-13 16:10:19,625 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:10:19,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-11-13 16:10:19,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:10:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 5430 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:10:26,017 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:10:31,062 INFO L134 CoverageAnalysis]: Checked inductivity of 7260 backedges. 5430 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:10:31,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247301161] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:10:31,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:10:31,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125, 125] total 188 [2024-11-13 16:10:31,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33482291] [2024-11-13 16:10:31,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:10:31,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 188 states [2024-11-13 16:10:31,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:10:31,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 188 interpolants. [2024-11-13 16:10:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7879, Invalid=27277, Unknown=0, NotChecked=0, Total=35156 [2024-11-13 16:10:31,066 INFO L87 Difference]: Start difference. First operand 248 states and 249 transitions. Second operand has 188 states, 188 states have (on average 2.3138297872340425) internal successors, (435), 188 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 16:10:32,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:10:32,038 INFO L93 Difference]: Finished difference Result 436 states and 438 transitions. [2024-11-13 16:10:32,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-11-13 16:10:32,039 INFO L78 Accepts]: Start accepts. Automaton has has 188 states, 188 states have (on average 2.3138297872340425) internal successors, (435), 188 states have internal predecessors, (435), 0 states have call successors, (0), 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 247 [2024-11-13 16:10:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:10:32,040 INFO L225 Difference]: With dead ends: 436 [2024-11-13 16:10:32,040 INFO L226 Difference]: Without dead ends: 249 [2024-11-13 16:10:32,040 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 617 GetRequests, 310 SyntacticMatches, 121 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23100 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=7879, Invalid=27277, Unknown=0, NotChecked=0, Total=35156 [2024-11-13 16:10:32,041 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 1188 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:10:32,041 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 585 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1188 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:10:32,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-13 16:10:32,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2024-11-13 16:10:32,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.0080645161290323) internal successors, (250), 248 states have internal predecessors, (250), 0 states have call successors, (0), 0 states 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 16:10:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2024-11-13 16:10:32,063 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 247 [2024-11-13 16:10:32,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:10:32,063 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2024-11-13 16:10:32,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 188 states, 188 states have (on average 2.3138297872340425) internal successors, (435), 188 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 16:10:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2024-11-13 16:10:32,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2024-11-13 16:10:32,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:10:32,064 INFO L215 NwaCegarLoop]: trace histogram [61, 61, 60, 60, 1, 1, 1, 1, 1, 1] [2024-11-13 16:10:32,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2024-11-13 16:10:32,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:10:32,265 INFO L396 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:10:32,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:10:32,265 INFO L85 PathProgramCache]: Analyzing trace with hash -809788181, now seen corresponding path program 120 times [2024-11-13 16:10:32,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:10:32,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960747901] [2024-11-13 16:10:32,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:10:32,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:10:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:10:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7321 backedges. 1830 proven. 5491 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:10:35,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:10:35,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960747901] [2024-11-13 16:10:35,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960747901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:10:35,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920896383] [2024-11-13 16:10:35,758 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:10:35,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:10:35,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:10:35,759 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:10:35,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2024-11-13 16:10:36,473 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2024-11-13 16:10:36,473 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:10:36,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-13 16:10:36,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:10:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7321 backedges. 1891 proven. 5430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:10:36,765 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:10:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 7321 backedges. 1891 proven. 5430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:10:40,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920896383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:10:40,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:10:40,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 67 [2024-11-13 16:10:40,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100144695] [2024-11-13 16:10:40,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:10:40,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-13 16:10:40,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:10:40,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-13 16:10:40,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2024, Invalid=2398, Unknown=0, NotChecked=0, Total=4422 [2024-11-13 16:10:40,130 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand has 67 states, 67 states have (on average 3.7611940298507465) internal successors, (252), 67 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 16:10:41,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:10:41,630 INFO L93 Difference]: Finished difference Result 260 states and 261 transitions. [2024-11-13 16:10:41,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-13 16:10:41,631 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.7611940298507465) internal successors, (252), 67 states have internal predecessors, (252), 0 states have call successors, (0), 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 248 [2024-11-13 16:10:41,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:10:41,632 INFO L225 Difference]: With dead ends: 260 [2024-11-13 16:10:41,632 INFO L226 Difference]: Without dead ends: 258 [2024-11-13 16:10:41,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 680 GetRequests, 432 SyntacticMatches, 122 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7864 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=6050, Invalid=10206, Unknown=0, NotChecked=0, Total=16256 [2024-11-13 16:10:41,633 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:10:41,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:10:41,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-13 16:10:41,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 252. [2024-11-13 16:10:41,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.0079681274900398) internal successors, (253), 251 states have internal predecessors, (253), 0 states have call successors, (0), 0 states 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 16:10:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 253 transitions. [2024-11-13 16:10:41,656 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 253 transitions. Word has length 248 [2024-11-13 16:10:41,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:10:41,656 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 253 transitions. [2024-11-13 16:10:41,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.7611940298507465) internal successors, (252), 67 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 16:10:41,656 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 253 transitions. [2024-11-13 16:10:41,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2024-11-13 16:10:41,657 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:10:41,657 INFO L215 NwaCegarLoop]: trace histogram [62, 61, 61, 61, 1, 1, 1, 1, 1, 1] [2024-11-13 16:10:41,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2024-11-13 16:10:41,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:10:41,857 INFO L396 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:10:41,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:10:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash 436419756, now seen corresponding path program 121 times [2024-11-13 16:10:41,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:10:41,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627864978] [2024-11-13 16:10:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:10:41,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:10:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:10:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 5431 proven. 2072 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:10:49,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:10:49,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627864978] [2024-11-13 16:10:49,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627864978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:10:49,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393910256] [2024-11-13 16:10:49,738 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:10:49,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:10:49,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:10:49,740 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:10:49,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2024-11-13 16:10:50,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:10:50,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 126 conjuncts are in the unsatisfiable core [2024-11-13 16:10:50,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:10:57,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 5612 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:10:57,023 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 5612 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:02,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393910256] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:02,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:02,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127, 127] total 191 [2024-11-13 16:11:02,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300175876] [2024-11-13 16:11:02,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:02,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 191 states [2024-11-13 16:11:02,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:02,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 191 interpolants. [2024-11-13 16:11:02,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8132, Invalid=28158, Unknown=0, NotChecked=0, Total=36290 [2024-11-13 16:11:02,238 INFO L87 Difference]: Start difference. First operand 252 states and 253 transitions. Second operand has 191 states, 191 states have (on average 2.3141361256544504) internal successors, (442), 191 states have internal predecessors, (442), 0 states have call successors, (0), 0 states 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 16:11:03,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:03,660 INFO L93 Difference]: Finished difference Result 443 states and 445 transitions. [2024-11-13 16:11:03,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-13 16:11:03,661 INFO L78 Accepts]: Start accepts. Automaton has has 191 states, 191 states have (on average 2.3141361256544504) internal successors, (442), 191 states have internal predecessors, (442), 0 states have call successors, (0), 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 251 [2024-11-13 16:11:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:03,662 INFO L225 Difference]: With dead ends: 443 [2024-11-13 16:11:03,662 INFO L226 Difference]: Without dead ends: 253 [2024-11-13 16:11:03,663 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 315 SyntacticMatches, 123 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23851 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=8132, Invalid=28158, Unknown=0, NotChecked=0, Total=36290 [2024-11-13 16:11:03,663 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:03,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 962 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1908 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 16:11:03,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-13 16:11:03,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-13 16:11:03,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.007936507936508) internal successors, (254), 252 states have internal predecessors, (254), 0 states have call successors, (0), 0 states 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 16:11:03,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 254 transitions. [2024-11-13 16:11:03,685 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 254 transitions. Word has length 251 [2024-11-13 16:11:03,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:03,685 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 254 transitions. [2024-11-13 16:11:03,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 191 states, 191 states have (on average 2.3141361256544504) internal successors, (442), 191 states have internal predecessors, (442), 0 states have call successors, (0), 0 states 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 16:11:03,685 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 254 transitions. [2024-11-13 16:11:03,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-13 16:11:03,686 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:03,686 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 61, 61, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:03,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2024-11-13 16:11:03,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2024-11-13 16:11:03,886 INFO L396 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:03,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:03,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1071070136, now seen corresponding path program 122 times [2024-11-13 16:11:03,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:03,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182308815] [2024-11-13 16:11:03,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:03,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:03,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7565 backedges. 1891 proven. 5674 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:07,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:07,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182308815] [2024-11-13 16:11:07,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182308815] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:07,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381041648] [2024-11-13 16:11:07,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:11:07,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:07,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:07,522 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:07,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2024-11-13 16:11:08,100 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:11:08,100 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:08,106 INFO L255 TraceCheckSpWp]: Trace formula consists of 954 conjuncts, 127 conjuncts are in the unsatisfiable core [2024-11-13 16:11:08,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7565 backedges. 1953 proven. 5612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:08,398 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 7565 backedges. 1953 proven. 5612 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:11,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381041648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:11,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:11,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 68 [2024-11-13 16:11:11,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444452353] [2024-11-13 16:11:11,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:11,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-13 16:11:11,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:11,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-13 16:11:11,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2088, Invalid=2468, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 16:11:11,875 INFO L87 Difference]: Start difference. First operand 253 states and 254 transitions. Second operand has 68 states, 68 states have (on average 3.764705882352941) internal successors, (256), 68 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 16:11:13,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:13,446 INFO L93 Difference]: Finished difference Result 264 states and 265 transitions. [2024-11-13 16:11:13,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-13 16:11:13,446 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.764705882352941) internal successors, (256), 68 states have internal predecessors, (256), 0 states have call successors, (0), 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 252 [2024-11-13 16:11:13,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:13,447 INFO L225 Difference]: With dead ends: 264 [2024-11-13 16:11:13,447 INFO L226 Difference]: Without dead ends: 262 [2024-11-13 16:11:13,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 438 SyntacticMatches, 125 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8179 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=6242, Invalid=10528, Unknown=0, NotChecked=0, Total=16770 [2024-11-13 16:11:13,448 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:13,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 39 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:11:13,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-13 16:11:13,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2024-11-13 16:11:13,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.007843137254902) internal successors, (257), 255 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 16:11:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 257 transitions. [2024-11-13 16:11:13,479 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 257 transitions. Word has length 252 [2024-11-13 16:11:13,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:13,479 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 257 transitions. [2024-11-13 16:11:13,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.764705882352941) internal successors, (256), 68 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 16:11:13,480 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 257 transitions. [2024-11-13 16:11:13,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-13 16:11:13,480 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:13,480 INFO L215 NwaCegarLoop]: trace histogram [63, 62, 62, 62, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:13,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2024-11-13 16:11:13,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2024-11-13 16:11:13,681 INFO L396 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:13,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:13,681 INFO L85 PathProgramCache]: Analyzing trace with hash -933561297, now seen corresponding path program 123 times [2024-11-13 16:11:13,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:13,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548104296] [2024-11-13 16:11:13,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:13,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 5613 proven. 2137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:20,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:20,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548104296] [2024-11-13 16:11:20,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548104296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:20,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553546363] [2024-11-13 16:11:20,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:11:20,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:20,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:20,899 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:20,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2024-11-13 16:11:21,686 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2024-11-13 16:11:21,686 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:21,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-13 16:11:21,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:28,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 5797 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:28,494 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 7750 backedges. 5797 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:33,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553546363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:33,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:33,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 194 [2024-11-13 16:11:33,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504652390] [2024-11-13 16:11:33,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:33,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 194 states [2024-11-13 16:11:33,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:33,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 194 interpolants. [2024-11-13 16:11:33,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8389, Invalid=29053, Unknown=0, NotChecked=0, Total=37442 [2024-11-13 16:11:33,849 INFO L87 Difference]: Start difference. First operand 256 states and 257 transitions. Second operand has 194 states, 194 states have (on average 2.314432989690722) internal successors, (449), 194 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:35,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:35,320 INFO L93 Difference]: Finished difference Result 450 states and 452 transitions. [2024-11-13 16:11:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2024-11-13 16:11:35,320 INFO L78 Accepts]: Start accepts. Automaton has has 194 states, 194 states have (on average 2.314432989690722) internal successors, (449), 194 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2024-11-13 16:11:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:35,321 INFO L225 Difference]: With dead ends: 450 [2024-11-13 16:11:35,321 INFO L226 Difference]: Without dead ends: 257 [2024-11-13 16:11:35,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 637 GetRequests, 320 SyntacticMatches, 125 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24614 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=8389, Invalid=29053, Unknown=0, NotChecked=0, Total=37442 [2024-11-13 16:11:35,323 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:35,323 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1003 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 16:11:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-13 16:11:35,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2024-11-13 16:11:35,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.0078125) internal successors, (258), 256 states have internal predecessors, (258), 0 states have call successors, (0), 0 states 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 16:11:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2024-11-13 16:11:35,346 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 255 [2024-11-13 16:11:35,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:35,346 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2024-11-13 16:11:35,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 194 states, 194 states have (on average 2.314432989690722) internal successors, (449), 194 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:35,346 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2024-11-13 16:11:35,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-13 16:11:35,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:35,346 INFO L215 NwaCegarLoop]: trace histogram [63, 63, 62, 62, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:35,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2024-11-13 16:11:35,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2024-11-13 16:11:35,547 INFO L396 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:35,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:35,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1257985483, now seen corresponding path program 124 times [2024-11-13 16:11:35,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:35,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545022823] [2024-11-13 16:11:35,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:35,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 7813 backedges. 1953 proven. 5860 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:39,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:39,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545022823] [2024-11-13 16:11:39,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545022823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:39,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285930920] [2024-11-13 16:11:39,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:11:39,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:39,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:39,318 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:39,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2024-11-13 16:11:39,940 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:11:39,940 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:39,947 INFO L255 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 132 conjuncts are in the unsatisfiable core [2024-11-13 16:11:39,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 7813 backedges. 2016 proven. 5797 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:40,242 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:43,725 INFO L134 CoverageAnalysis]: Checked inductivity of 7813 backedges. 2016 proven. 5797 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:43,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285930920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:43,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:11:43,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67, 67] total 69 [2024-11-13 16:11:43,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498023210] [2024-11-13 16:11:43,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:43,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-13 16:11:43,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:11:43,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-13 16:11:43,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2153, Invalid=2539, Unknown=0, NotChecked=0, Total=4692 [2024-11-13 16:11:43,727 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand has 69 states, 69 states have (on average 3.7681159420289854) internal successors, (260), 69 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 16:11:45,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:45,330 INFO L93 Difference]: Finished difference Result 268 states and 269 transitions. [2024-11-13 16:11:45,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-11-13 16:11:45,331 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 3.7681159420289854) internal successors, (260), 69 states have internal predecessors, (260), 0 states have call successors, (0), 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 256 [2024-11-13 16:11:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:45,332 INFO L225 Difference]: With dead ends: 268 [2024-11-13 16:11:45,332 INFO L226 Difference]: Without dead ends: 266 [2024-11-13 16:11:45,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 702 GetRequests, 446 SyntacticMatches, 126 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8374 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=6437, Invalid=10855, Unknown=0, NotChecked=0, Total=17292 [2024-11-13 16:11:45,333 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:45,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 44 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:11:45,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-13 16:11:45,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 260. [2024-11-13 16:11:45,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 1.0077220077220077) internal successors, (261), 259 states have internal predecessors, (261), 0 states have call successors, (0), 0 states 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 16:11:45,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 261 transitions. [2024-11-13 16:11:45,360 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 261 transitions. Word has length 256 [2024-11-13 16:11:45,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:45,360 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 261 transitions. [2024-11-13 16:11:45,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 3.7681159420289854) internal successors, (260), 69 states have internal predecessors, (260), 0 states have call successors, (0), 0 states 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 16:11:45,360 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 261 transitions. [2024-11-13 16:11:45,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-13 16:11:45,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:45,361 INFO L215 NwaCegarLoop]: trace histogram [64, 63, 63, 63, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:45,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2024-11-13 16:11:45,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2024-11-13 16:11:45,561 INFO L396 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:11:45,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:45,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1234282548, now seen corresponding path program 125 times [2024-11-13 16:11:45,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:11:45,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078000614] [2024-11-13 16:11:45,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:45,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:11:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:52,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 5798 proven. 2203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:52,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:11:52,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078000614] [2024-11-13 16:11:52,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078000614] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:11:52,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366620637] [2024-11-13 16:11:52,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:11:52,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:52,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:52,990 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:52,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e59ff5f-b386-4c76-95c1-f75244a66f3f/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2024-11-13 16:11:53,732 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 64 check-sat command(s) [2024-11-13 16:11:53,732 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:11:53,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 130 conjuncts are in the unsatisfiable core [2024-11-13 16:11:53,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 5985 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:00,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:06,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8001 backedges. 5985 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:06,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366620637] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:12:06,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:12:06,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [131, 131, 131] total 197 [2024-11-13 16:12:06,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461934936] [2024-11-13 16:12:06,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:12:06,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 197 states [2024-11-13 16:12:06,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:06,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 197 interpolants. [2024-11-13 16:12:06,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8650, Invalid=29962, Unknown=0, NotChecked=0, Total=38612 [2024-11-13 16:12:06,254 INFO L87 Difference]: Start difference. First operand 260 states and 261 transitions. Second operand has 197 states, 197 states have (on average 2.314720812182741) internal successors, (456), 197 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)