./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/in-de42.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/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_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/in-de42.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/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_46183749-34bd-48a0-b606-44002ae6bb55/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 6b13c8359dfc3fa3ad0e51c85ccdf97c793022ae2240daea5433bdb872a277a9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:23:34,753 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:23:34,836 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:23:34,847 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:23:34,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:23:34,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:23:34,890 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:23:34,890 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:23:34,891 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:23:34,891 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:23:34,891 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:23:34,891 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:23:34,892 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:23:34,892 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:23:34,893 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:23:34,893 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:23:34,893 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:23:34,893 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:23:34,894 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:23:34,894 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:23:34,894 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:23:34,894 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:23:34,894 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:23:34,894 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:23:34,895 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:23:34,895 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:23:34,895 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:23:34,895 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:23:34,895 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:23:34,895 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:23:34,895 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:23:34,896 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:23:34,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:23:34,896 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:23:34,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:23:34,897 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:23:34,897 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:23:34,897 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:23:34,897 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:23:34,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:23:34,897 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:23:34,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:23:34,897 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_46183749-34bd-48a0-b606-44002ae6bb55/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 -> 6b13c8359dfc3fa3ad0e51c85ccdf97c793022ae2240daea5433bdb872a277a9 [2024-11-13 14:23:35,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:23:35,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:23:35,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:23:35,224 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:23:35,224 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:23:35,226 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/loops-crafted-1/in-de42.c Unable to find full path for "g++" [2024-11-13 14:23:37,060 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:23:37,282 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:23:37,282 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/sv-benchmarks/c/loops-crafted-1/in-de42.c [2024-11-13 14:23:37,300 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/data/ddd598411/abb574ae67f346c99cd3b2942ce07d4f/FLAG355021937 [2024-11-13 14:23:37,344 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/data/ddd598411/abb574ae67f346c99cd3b2942ce07d4f [2024-11-13 14:23:37,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:23:37,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:23:37,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:23:37,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:23:37,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:23:37,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:23:37" (1/1) ... [2024-11-13 14:23:37,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16dad1ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37, skipping insertion in model container [2024-11-13 14:23:37,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:23:37" (1/1) ... [2024-11-13 14:23:37,370 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:23:37,531 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_46183749-34bd-48a0-b606-44002ae6bb55/sv-benchmarks/c/loops-crafted-1/in-de42.c[368,381] [2024-11-13 14:23:37,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:23:37,567 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:23:37,581 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_46183749-34bd-48a0-b606-44002ae6bb55/sv-benchmarks/c/loops-crafted-1/in-de42.c[368,381] [2024-11-13 14:23:37,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:23:37,608 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:23:37,609 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37 WrapperNode [2024-11-13 14:23:37,609 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:23:37,611 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:23:37,611 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:23:37,611 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:23:37,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37" (1/1) ... [2024-11-13 14:23:37,626 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37" (1/1) ... [2024-11-13 14:23:37,646 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 61 [2024-11-13 14:23:37,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:23:37,650 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:23:37,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:23:37,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:23:37,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37" (1/1) ... [2024-11-13 14:23:37,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37" (1/1) ... [2024-11-13 14:23:37,665 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37" (1/1) ... [2024-11-13 14:23:37,684 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 14:23:37,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37" (1/1) ... [2024-11-13 14:23:37,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37" (1/1) ... [2024-11-13 14:23:37,689 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37" (1/1) ... [2024-11-13 14:23:37,697 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37" (1/1) ... [2024-11-13 14:23:37,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37" (1/1) ... [2024-11-13 14:23:37,701 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37" (1/1) ... [2024-11-13 14:23:37,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:23:37,703 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:23:37,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:23:37,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:23:37,708 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37" (1/1) ... [2024-11-13 14:23:37,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:23:37,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:37,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:23:37,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:23:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:23:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:23:37,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:23:37,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:23:37,866 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:23:37,868 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:23:38,009 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-13 14:23:38,009 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:23:38,017 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:23:38,018 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 14:23:38,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:23:38 BoogieIcfgContainer [2024-11-13 14:23:38,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:23:38,020 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:23:38,020 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:23:38,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:23:38,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:23:37" (1/3) ... [2024-11-13 14:23:38,024 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddb1877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:23:38, skipping insertion in model container [2024-11-13 14:23:38,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:23:37" (2/3) ... [2024-11-13 14:23:38,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddb1877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:23:38, skipping insertion in model container [2024-11-13 14:23:38,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:23:38" (3/3) ... [2024-11-13 14:23:38,026 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de42.c [2024-11-13 14:23:38,042 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:23:38,044 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG in-de42.c that has 1 procedures, 15 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-13 14:23:38,098 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:23:38,109 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;@6e378d27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:23:38,109 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:23:38,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:38,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 14:23:38,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:38,119 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:38,119 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:38,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:38,124 INFO L85 PathProgramCache]: Analyzing trace with hash 86057599, now seen corresponding path program 1 times [2024-11-13 14:23:38,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:38,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501582447] [2024-11-13 14:23:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:38,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:38,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:38,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:38,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501582447] [2024-11-13 14:23:38,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501582447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:23:38,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:23:38,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:23:38,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480282716] [2024-11-13 14:23:38,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:23:38,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:23:38,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:38,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:23:38,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:23:38,349 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:38,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:38,362 INFO L93 Difference]: Finished difference Result 27 states and 41 transitions. [2024-11-13 14:23:38,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:23:38,364 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-13 14:23:38,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:38,371 INFO L225 Difference]: With dead ends: 27 [2024-11-13 14:23:38,371 INFO L226 Difference]: Without dead ends: 11 [2024-11-13 14:23:38,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:23:38,380 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:38,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:23:38,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2024-11-13 14:23:38,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2024-11-13 14:23:38,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:38,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2024-11-13 14:23:38,414 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 10 [2024-11-13 14:23:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:38,415 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2024-11-13 14:23:38,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2024-11-13 14:23:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 14:23:38,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:38,417 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:38,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:23:38,418 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:38,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:38,419 INFO L85 PathProgramCache]: Analyzing trace with hash 82363515, now seen corresponding path program 1 times [2024-11-13 14:23:38,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:38,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558311455] [2024-11-13 14:23:38,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:38,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:39,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:39,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:39,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558311455] [2024-11-13 14:23:39,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558311455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:23:39,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:23:39,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:23:39,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262831781] [2024-11-13 14:23:39,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:23:39,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:23:39,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:39,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:23:39,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:23:39,243 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:39,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:39,426 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2024-11-13 14:23:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:23:39,427 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2024-11-13 14:23:39,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:39,428 INFO L225 Difference]: With dead ends: 25 [2024-11-13 14:23:39,428 INFO L226 Difference]: Without dead ends: 17 [2024-11-13 14:23:39,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:23:39,429 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:39,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:39,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-13 14:23:39,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-13 14:23:39,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:39,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 23 transitions. [2024-11-13 14:23:39,441 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 23 transitions. Word has length 10 [2024-11-13 14:23:39,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:39,441 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 23 transitions. [2024-11-13 14:23:39,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:39,442 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 23 transitions. [2024-11-13 14:23:39,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 14:23:39,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:39,443 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:39,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:23:39,443 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:39,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:39,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1693856879, now seen corresponding path program 1 times [2024-11-13 14:23:39,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:39,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184844486] [2024-11-13 14:23:39,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:39,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:39,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:39,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:39,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184844486] [2024-11-13 14:23:39,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184844486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:23:39,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:23:39,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:23:39,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179312514] [2024-11-13 14:23:39,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:23:39,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:23:39,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:39,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:23:39,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:23:39,549 INFO L87 Difference]: Start difference. First operand 17 states and 23 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:39,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:39,570 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2024-11-13 14:23:39,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:23:39,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 14:23:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:39,572 INFO L225 Difference]: With dead ends: 25 [2024-11-13 14:23:39,572 INFO L226 Difference]: Without dead ends: 16 [2024-11-13 14:23:39,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:23:39,573 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:39,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 20 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:23:39,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2024-11-13 14:23:39,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2024-11-13 14:23:39,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 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 14:23:39,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 21 transitions. [2024-11-13 14:23:39,580 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 21 transitions. Word has length 11 [2024-11-13 14:23:39,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:39,580 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 21 transitions. [2024-11-13 14:23:39,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:39,581 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2024-11-13 14:23:39,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 14:23:39,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:39,582 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:39,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:23:39,583 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:39,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:39,584 INFO L85 PathProgramCache]: Analyzing trace with hash -262399329, now seen corresponding path program 1 times [2024-11-13 14:23:39,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:39,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920009315] [2024-11-13 14:23:39,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:39,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:39,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:39,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:39,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920009315] [2024-11-13 14:23:39,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920009315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:23:39,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:23:39,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:23:39,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715943248] [2024-11-13 14:23:39,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:23:39,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:23:39,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:39,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:23:39,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:23:39,694 INFO L87 Difference]: Start difference. First operand 16 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:39,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:39,740 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2024-11-13 14:23:39,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:23:39,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-13 14:23:39,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:39,742 INFO L225 Difference]: With dead ends: 21 [2024-11-13 14:23:39,742 INFO L226 Difference]: Without dead ends: 12 [2024-11-13 14:23:39,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:23:39,743 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27 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 14:23:39,746 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 27 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:23:39,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-11-13 14:23:39,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-11-13 14:23:39,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2024-11-13 14:23:39,753 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 11 [2024-11-13 14:23:39,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:39,753 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2024-11-13 14:23:39,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2024-11-13 14:23:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 14:23:39,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:39,754 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:39,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:23:39,754 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:39,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:39,754 INFO L85 PathProgramCache]: Analyzing trace with hash 40636767, now seen corresponding path program 1 times [2024-11-13 14:23:39,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:39,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227629251] [2024-11-13 14:23:39,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:39,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:39,877 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 14:23:39,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:39,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227629251] [2024-11-13 14:23:39,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227629251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:39,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72334368] [2024-11-13 14:23:39,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:39,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:39,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:39,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:39,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:23:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:39,968 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:23:39,971 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:40,004 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 14:23:40,005 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:40,062 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 14:23:40,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72334368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:40,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:40,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-13 14:23:40,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576380965] [2024-11-13 14:23:40,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:40,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:23:40,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:40,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:23:40,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:23:40,065 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 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 14:23:40,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:40,248 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2024-11-13 14:23:40,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:23:40,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 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) Word has length 11 [2024-11-13 14:23:40,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:40,250 INFO L225 Difference]: With dead ends: 35 [2024-11-13 14:23:40,251 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 14:23:40,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:23:40,253 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 25 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:40,255 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 40 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:40,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 14:23:40,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2024-11-13 14:23:40,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.391304347826087) internal successors, (32), 23 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 32 transitions. [2024-11-13 14:23:40,269 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 32 transitions. Word has length 11 [2024-11-13 14:23:40,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:40,270 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 32 transitions. [2024-11-13 14:23:40,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 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 14:23:40,270 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 32 transitions. [2024-11-13 14:23:40,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 14:23:40,270 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:40,270 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:40,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:23:40,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:40,471 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:40,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:40,472 INFO L85 PathProgramCache]: Analyzing trace with hash -941302319, now seen corresponding path program 1 times [2024-11-13 14:23:40,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:40,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44564403] [2024-11-13 14:23:40,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:40,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:23:40,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:40,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44564403] [2024-11-13 14:23:40,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44564403] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:40,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288630461] [2024-11-13 14:23:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:40,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:40,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:40,574 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:40,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:23:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:40,635 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:23:40,637 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:40,706 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:23:40,707 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:40,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:23:40,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288630461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:40,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:40,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-13 14:23:40,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056142511] [2024-11-13 14:23:40,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:40,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:23:40,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:40,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:23:40,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:23:40,749 INFO L87 Difference]: Start difference. First operand 24 states and 32 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:40,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:40,831 INFO L93 Difference]: Finished difference Result 57 states and 84 transitions. [2024-11-13 14:23:40,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:23:40,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 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 13 [2024-11-13 14:23:40,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:40,833 INFO L225 Difference]: With dead ends: 57 [2024-11-13 14:23:40,833 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 14:23:40,834 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:23:40,835 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 9 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:40,835 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:23:40,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 14:23:40,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2024-11-13 14:23:40,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.488888888888889) internal successors, (67), 45 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:40,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 67 transitions. [2024-11-13 14:23:40,858 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 67 transitions. Word has length 13 [2024-11-13 14:23:40,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:40,859 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 67 transitions. [2024-11-13 14:23:40,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:40,859 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 67 transitions. [2024-11-13 14:23:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 14:23:40,859 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:40,860 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:40,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:23:41,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 14:23:41,060 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:41,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:41,061 INFO L85 PathProgramCache]: Analyzing trace with hash 886064585, now seen corresponding path program 1 times [2024-11-13 14:23:41,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:41,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482386585] [2024-11-13 14:23:41,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:41,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:41,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:41,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482386585] [2024-11-13 14:23:41,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482386585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:41,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131743387] [2024-11-13 14:23:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:41,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:41,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:41,563 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:41,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:23:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:41,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 14:23:41,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:41,973 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:42,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131743387] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:42,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:42,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2024-11-13 14:23:42,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072745899] [2024-11-13 14:23:42,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:42,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:23:42,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:42,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:23:42,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:23:42,607 INFO L87 Difference]: Start difference. First operand 46 states and 67 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:43,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:43,544 INFO L93 Difference]: Finished difference Result 57 states and 78 transitions. [2024-11-13 14:23:43,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:23:43,545 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 14:23:43,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:43,546 INFO L225 Difference]: With dead ends: 57 [2024-11-13 14:23:43,546 INFO L226 Difference]: Without dead ends: 35 [2024-11-13 14:23:43,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2024-11-13 14:23:43,547 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:43,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 87 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:23:43,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-13 14:23:43,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2024-11-13 14:23:43,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 33 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 14:23:43,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 50 transitions. [2024-11-13 14:23:43,570 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 50 transitions. Word has length 14 [2024-11-13 14:23:43,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:43,571 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 50 transitions. [2024-11-13 14:23:43,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 50 transitions. [2024-11-13 14:23:43,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 14:23:43,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:43,572 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:43,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 14:23:43,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 14:23:43,773 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:43,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash -238625413, now seen corresponding path program 2 times [2024-11-13 14:23:43,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:43,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782996702] [2024-11-13 14:23:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:43,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:43,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:43,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782996702] [2024-11-13 14:23:43,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782996702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:43,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371395955] [2024-11-13 14:23:43,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:23:43,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:43,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:43,909 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:43,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:23:43,959 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:23:43,959 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:43,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:23:43,962 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:43,989 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:44,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371395955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:44,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:44,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-13 14:23:44,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712575939] [2024-11-13 14:23:44,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:44,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 14:23:44,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:44,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 14:23:44,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:23:44,134 INFO L87 Difference]: Start difference. First operand 34 states and 50 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:44,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:44,933 INFO L93 Difference]: Finished difference Result 141 states and 245 transitions. [2024-11-13 14:23:44,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 14:23:44,934 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 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 14 [2024-11-13 14:23:44,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:44,935 INFO L225 Difference]: With dead ends: 141 [2024-11-13 14:23:44,936 INFO L226 Difference]: Without dead ends: 129 [2024-11-13 14:23:44,936 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2024-11-13 14:23:44,937 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 110 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:44,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 110 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:23:44,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-13 14:23:44,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 72. [2024-11-13 14:23:44,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 71 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 14:23:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2024-11-13 14:23:44,981 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 14 [2024-11-13 14:23:44,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:44,981 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2024-11-13 14:23:44,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:44,981 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2024-11-13 14:23:44,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 14:23:44,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:44,982 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:45,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:23:45,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 14:23:45,187 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:45,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:45,187 INFO L85 PathProgramCache]: Analyzing trace with hash -329167493, now seen corresponding path program 2 times [2024-11-13 14:23:45,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:45,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899764497] [2024-11-13 14:23:45,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:45,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:23:45,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:45,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899764497] [2024-11-13 14:23:45,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899764497] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:45,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541610449] [2024-11-13 14:23:45,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:23:45,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:45,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:45,333 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:45,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:23:45,390 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:23:45,390 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:45,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 14:23:45,393 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:45,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:23:45,442 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:23:45,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [541610449] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:45,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:45,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2024-11-13 14:23:45,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444670604] [2024-11-13 14:23:45,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:45,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:23:45,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:45,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:23:45,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:23:45,548 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:45,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:45,742 INFO L93 Difference]: Finished difference Result 101 states and 140 transitions. [2024-11-13 14:23:45,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:23:45,743 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-13 14:23:45,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:45,744 INFO L225 Difference]: With dead ends: 101 [2024-11-13 14:23:45,744 INFO L226 Difference]: Without dead ends: 84 [2024-11-13 14:23:45,745 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-11-13 14:23:45,745 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:45,745 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 50 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:45,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-13 14:23:45,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 68. [2024-11-13 14:23:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 67 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 14:23:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 97 transitions. [2024-11-13 14:23:45,786 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 97 transitions. Word has length 16 [2024-11-13 14:23:45,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:45,786 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 97 transitions. [2024-11-13 14:23:45,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:45,786 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 97 transitions. [2024-11-13 14:23:45,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 14:23:45,787 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:45,787 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:45,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 14:23:45,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:45,988 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:45,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:45,988 INFO L85 PathProgramCache]: Analyzing trace with hash -359544673, now seen corresponding path program 3 times [2024-11-13 14:23:45,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:45,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631750129] [2024-11-13 14:23:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:45,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:23:46,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:46,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631750129] [2024-11-13 14:23:46,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631750129] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:46,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294142979] [2024-11-13 14:23:46,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:23:46,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:46,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:46,128 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:46,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:23:46,181 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 14:23:46,181 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:46,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 14:23:46,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:46,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:23:46,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 14:23:46,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294142979] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:46,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:46,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-13 14:23:46,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890858001] [2024-11-13 14:23:46,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:46,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:23:46,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:46,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:23:46,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:23:46,296 INFO L87 Difference]: Start difference. First operand 68 states and 97 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 14:23:46,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:46,392 INFO L93 Difference]: Finished difference Result 83 states and 114 transitions. [2024-11-13 14:23:46,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:23:46,395 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 17 [2024-11-13 14:23:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:46,396 INFO L225 Difference]: With dead ends: 83 [2024-11-13 14:23:46,396 INFO L226 Difference]: Without dead ends: 79 [2024-11-13 14:23:46,396 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:23:46,397 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:46,397 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 46 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:23:46,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-13 14:23:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 76. [2024-11-13 14:23:46,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 75 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 14:23:46,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 106 transitions. [2024-11-13 14:23:46,433 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 106 transitions. Word has length 17 [2024-11-13 14:23:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:46,433 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 106 transitions. [2024-11-13 14:23:46,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 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 14:23:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 106 transitions. [2024-11-13 14:23:46,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 14:23:46,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:46,436 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:46,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:23:46,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 14:23:46,637 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:46,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:46,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1740682427, now seen corresponding path program 4 times [2024-11-13 14:23:46,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:46,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060373088] [2024-11-13 14:23:46,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:46,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:47,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:47,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060373088] [2024-11-13 14:23:47,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060373088] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:47,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405935712] [2024-11-13 14:23:47,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:23:47,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:47,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:47,510 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:47,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:23:47,621 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:23:47,621 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:47,622 WARN L253 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 14:23:47,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:48,051 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:48,051 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:49,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405935712] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:49,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:49,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 34 [2024-11-13 14:23:49,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581392154] [2024-11-13 14:23:49,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:49,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 14:23:49,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:49,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 14:23:49,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1025, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:23:49,026 INFO L87 Difference]: Start difference. First operand 76 states and 106 transitions. Second operand has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:50,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:50,559 INFO L93 Difference]: Finished difference Result 96 states and 130 transitions. [2024-11-13 14:23:50,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 14:23:50,560 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 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 18 [2024-11-13 14:23:50,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:50,561 INFO L225 Difference]: With dead ends: 96 [2024-11-13 14:23:50,561 INFO L226 Difference]: Without dead ends: 84 [2024-11-13 14:23:50,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=275, Invalid=1981, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 14:23:50,563 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 43 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:50,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 131 Invalid, 487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:23:50,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-13 14:23:50,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2024-11-13 14:23:50,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.3625) internal successors, (109), 80 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 14:23:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 109 transitions. [2024-11-13 14:23:50,587 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 109 transitions. Word has length 18 [2024-11-13 14:23:50,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:50,587 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 109 transitions. [2024-11-13 14:23:50,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:50,588 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 109 transitions. [2024-11-13 14:23:50,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 14:23:50,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:50,589 INFO L215 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:50,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 14:23:50,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:50,789 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:50,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:50,790 INFO L85 PathProgramCache]: Analyzing trace with hash -486940983, now seen corresponding path program 5 times [2024-11-13 14:23:50,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:50,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403696600] [2024-11-13 14:23:50,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:50,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:50,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:23:50,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:50,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403696600] [2024-11-13 14:23:50,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403696600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:50,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043458145] [2024-11-13 14:23:50,933 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:23:50,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:50,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:50,935 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:50,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:23:50,996 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 14:23:50,997 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:50,998 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 14:23:50,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:51,031 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:23:51,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:23:51,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043458145] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:51,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:51,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-13 14:23:51,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702822770] [2024-11-13 14:23:51,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:51,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:23:51,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:51,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:23:51,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:23:51,220 INFO L87 Difference]: Start difference. First operand 81 states and 109 transitions. Second operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:53,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:53,157 INFO L93 Difference]: Finished difference Result 198 states and 300 transitions. [2024-11-13 14:23:53,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-13 14:23:53,158 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 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) Word has length 18 [2024-11-13 14:23:53,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:53,159 INFO L225 Difference]: With dead ends: 198 [2024-11-13 14:23:53,159 INFO L226 Difference]: Without dead ends: 176 [2024-11-13 14:23:53,160 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1061, Invalid=2845, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 14:23:53,161 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 226 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:53,161 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 143 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:23:53,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-13 14:23:53,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 103. [2024-11-13 14:23:53,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.3725490196078431) internal successors, (140), 102 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 14:23:53,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 140 transitions. [2024-11-13 14:23:53,211 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 140 transitions. Word has length 18 [2024-11-13 14:23:53,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:53,211 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 140 transitions. [2024-11-13 14:23:53,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:53,212 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 140 transitions. [2024-11-13 14:23:53,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:23:53,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:53,213 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:53,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 14:23:53,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:53,413 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:53,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:53,414 INFO L85 PathProgramCache]: Analyzing trace with hash -901655955, now seen corresponding path program 6 times [2024-11-13 14:23:53,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:53,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297159687] [2024-11-13 14:23:53,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:53,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:53,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 14:23:53,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:53,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297159687] [2024-11-13 14:23:53,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297159687] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:53,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197239209] [2024-11-13 14:23:53,548 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:23:53,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:53,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:53,550 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:53,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:23:53,607 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 14:23:53,607 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:53,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:23:53,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 14:23:53,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 14:23:53,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197239209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:53,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:53,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2024-11-13 14:23:53,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012755418] [2024-11-13 14:23:53,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:53,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 14:23:53,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:53,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 14:23:53,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:23:53,835 INFO L87 Difference]: Start difference. First operand 103 states and 140 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:54,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:54,117 INFO L93 Difference]: Finished difference Result 137 states and 184 transitions. [2024-11-13 14:23:54,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 14:23:54,118 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 14:23:54,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:54,118 INFO L225 Difference]: With dead ends: 137 [2024-11-13 14:23:54,119 INFO L226 Difference]: Without dead ends: 121 [2024-11-13 14:23:54,119 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:23:54,119 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:54,120 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 75 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:54,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-13 14:23:54,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 100. [2024-11-13 14:23:54,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.3535353535353536) internal successors, (134), 99 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 14:23:54,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 134 transitions. [2024-11-13 14:23:54,152 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 134 transitions. Word has length 20 [2024-11-13 14:23:54,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:54,152 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 134 transitions. [2024-11-13 14:23:54,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:54,152 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 134 transitions. [2024-11-13 14:23:54,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:23:54,153 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:54,153 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:54,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 14:23:54,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:54,354 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:54,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:54,354 INFO L85 PathProgramCache]: Analyzing trace with hash -705939063, now seen corresponding path program 7 times [2024-11-13 14:23:54,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:54,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929732229] [2024-11-13 14:23:54,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:54,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:23:54,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:54,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929732229] [2024-11-13 14:23:54,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929732229] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:54,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926255296] [2024-11-13 14:23:54,575 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:23:54,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:54,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:54,577 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:54,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:23:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:54,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:23:54,631 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 14:23:54,711 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 14:23:54,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926255296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:54,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:54,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 12 [2024-11-13 14:23:54,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638938985] [2024-11-13 14:23:54,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:54,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:23:54,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:54,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:23:54,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:23:54,792 INFO L87 Difference]: Start difference. First operand 100 states and 134 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:54,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:54,919 INFO L93 Difference]: Finished difference Result 130 states and 177 transitions. [2024-11-13 14:23:54,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:23:54,919 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 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) Word has length 20 [2024-11-13 14:23:54,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:54,920 INFO L225 Difference]: With dead ends: 130 [2024-11-13 14:23:54,920 INFO L226 Difference]: Without dead ends: 126 [2024-11-13 14:23:54,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:23:54,921 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 26 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:54,921 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 96 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-13 14:23:54,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 116. [2024-11-13 14:23:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.373913043478261) internal successors, (158), 115 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 14:23:54,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 158 transitions. [2024-11-13 14:23:54,961 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 158 transitions. Word has length 20 [2024-11-13 14:23:54,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:54,962 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 158 transitions. [2024-11-13 14:23:54,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:23:54,962 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 158 transitions. [2024-11-13 14:23:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-13 14:23:54,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:54,962 INFO L215 NwaCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:54,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 14:23:55,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 14:23:55,163 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:55,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:55,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1673073375, now seen corresponding path program 3 times [2024-11-13 14:23:55,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:55,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995940774] [2024-11-13 14:23:55,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:55,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:55,416 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:55,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:55,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995940774] [2024-11-13 14:23:55,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995940774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:55,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523567751] [2024-11-13 14:23:55,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:23:55,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:55,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:55,419 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:55,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:23:55,484 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-13 14:23:55,485 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:55,485 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 14:23:55,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:55,514 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:23:55,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523567751] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:55,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:55,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 27 [2024-11-13 14:23:55,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530943607] [2024-11-13 14:23:55,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:55,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 14:23:55,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:55,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 14:23:55,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2024-11-13 14:23:55,840 INFO L87 Difference]: Start difference. First operand 116 states and 158 transitions. Second operand has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 14:23:58,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:58,768 INFO L93 Difference]: Finished difference Result 474 states and 743 transitions. [2024-11-13 14:23:58,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-13 14:23:58,769 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 21 [2024-11-13 14:23:58,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:58,771 INFO L225 Difference]: With dead ends: 474 [2024-11-13 14:23:58,771 INFO L226 Difference]: Without dead ends: 440 [2024-11-13 14:23:58,772 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=811, Invalid=1541, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 14:23:58,773 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 519 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:58,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 483 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:23:58,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2024-11-13 14:23:58,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 175. [2024-11-13 14:23:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.3793103448275863) internal successors, (240), 174 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 14:23:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 240 transitions. [2024-11-13 14:23:58,832 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 240 transitions. Word has length 21 [2024-11-13 14:23:58,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:58,832 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 240 transitions. [2024-11-13 14:23:58,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 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 14:23:58,832 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 240 transitions. [2024-11-13 14:23:58,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 14:23:58,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:58,833 INFO L215 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:58,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 14:23:59,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 14:23:59,034 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:59,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1784507835, now seen corresponding path program 8 times [2024-11-13 14:23:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:59,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660133774] [2024-11-13 14:23:59,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:59,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:23:59,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:59,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660133774] [2024-11-13 14:23:59,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660133774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:59,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202555523] [2024-11-13 14:23:59,149 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:23:59,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:59,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:59,151 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:59,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:23:59,208 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:23:59,208 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:59,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 14:23:59,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:59,240 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:23:59,240 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:23:59,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202555523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:59,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:59,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-13 14:23:59,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434636724] [2024-11-13 14:23:59,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:59,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:23:59,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:59,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:23:59,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:23:59,288 INFO L87 Difference]: Start difference. First operand 175 states and 240 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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 14:23:59,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:59,398 INFO L93 Difference]: Finished difference Result 186 states and 252 transitions. [2024-11-13 14:23:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:23:59,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) Word has length 22 [2024-11-13 14:23:59,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:59,400 INFO L225 Difference]: With dead ends: 186 [2024-11-13 14:23:59,400 INFO L226 Difference]: Without dead ends: 168 [2024-11-13 14:23:59,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:23:59,401 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 6 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:59,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:23:59,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-13 14:23:59,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2024-11-13 14:23:59,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.393939393939394) internal successors, (230), 165 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 14:23:59,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 230 transitions. [2024-11-13 14:23:59,477 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 230 transitions. Word has length 22 [2024-11-13 14:23:59,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:59,477 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 230 transitions. [2024-11-13 14:23:59,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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 14:23:59,477 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 230 transitions. [2024-11-13 14:23:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 14:23:59,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:59,478 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:59,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 14:23:59,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 14:23:59,683 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:59,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash 250686089, now seen corresponding path program 9 times [2024-11-13 14:23:59,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:59,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113476706] [2024-11-13 14:23:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:59,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:00,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:00,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113476706] [2024-11-13 14:24:00,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113476706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:00,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752969165] [2024-11-13 14:24:00,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:24:00,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:00,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:00,212 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:00,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:24:00,292 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 14:24:00,292 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:00,293 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 14:24:00,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:00,816 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:24:01,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752969165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:01,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:01,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 33 [2024-11-13 14:24:01,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524011969] [2024-11-13 14:24:01,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:01,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 14:24:01,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:01,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 14:24:01,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=969, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 14:24:01,281 INFO L87 Difference]: Start difference. First operand 166 states and 230 transitions. Second operand has 33 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 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 14:24:02,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:02,263 INFO L93 Difference]: Finished difference Result 187 states and 253 transitions. [2024-11-13 14:24:02,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 14:24:02,264 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 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 22 [2024-11-13 14:24:02,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:02,265 INFO L225 Difference]: With dead ends: 187 [2024-11-13 14:24:02,265 INFO L226 Difference]: Without dead ends: 173 [2024-11-13 14:24:02,269 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 19 SyntacticMatches, 10 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 14:24:02,271 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 20 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:02,273 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 114 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:24:02,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-13 14:24:02,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2024-11-13 14:24:02,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.377245508982036) internal successors, (230), 167 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 14:24:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 230 transitions. [2024-11-13 14:24:02,380 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 230 transitions. Word has length 22 [2024-11-13 14:24:02,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:02,381 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 230 transitions. [2024-11-13 14:24:02,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 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 14:24:02,381 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 230 transitions. [2024-11-13 14:24:02,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 14:24:02,382 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:02,382 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:02,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 14:24:02,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 14:24:02,585 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:02,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:02,586 INFO L85 PathProgramCache]: Analyzing trace with hash 269212667, now seen corresponding path program 2 times [2024-11-13 14:24:02,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:02,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410309847] [2024-11-13 14:24:02,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:02,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:24:02,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:02,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410309847] [2024-11-13 14:24:02,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410309847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:02,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769506916] [2024-11-13 14:24:02,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:24:02,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:02,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:02,775 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:02,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 14:24:02,830 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:24:02,830 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:02,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:24:02,832 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:24:02,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:24:03,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769506916] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:03,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:03,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 14 [2024-11-13 14:24:03,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536828804] [2024-11-13 14:24:03,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:03,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:24:03,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:03,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:24:03,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:24:03,057 INFO L87 Difference]: Start difference. First operand 168 states and 230 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:03,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:03,216 INFO L93 Difference]: Finished difference Result 182 states and 249 transitions. [2024-11-13 14:24:03,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:24:03,217 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 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 22 [2024-11-13 14:24:03,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:03,218 INFO L225 Difference]: With dead ends: 182 [2024-11-13 14:24:03,218 INFO L226 Difference]: Without dead ends: 178 [2024-11-13 14:24:03,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 9 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:24:03,219 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 39 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:03,219 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 111 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:24:03,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-13 14:24:03,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 163. [2024-11-13 14:24:03,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.382716049382716) internal successors, (224), 162 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 14:24:03,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 224 transitions. [2024-11-13 14:24:03,329 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 224 transitions. Word has length 22 [2024-11-13 14:24:03,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:03,330 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 224 transitions. [2024-11-13 14:24:03,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:03,330 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 224 transitions. [2024-11-13 14:24:03,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 14:24:03,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:03,331 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:03,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 14:24:03,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 14:24:03,531 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:03,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:03,532 INFO L85 PathProgramCache]: Analyzing trace with hash -817000431, now seen corresponding path program 10 times [2024-11-13 14:24:03,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:03,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493624478] [2024-11-13 14:24:03,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:03,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:03,654 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:24:03,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:03,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493624478] [2024-11-13 14:24:03,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493624478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:03,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954872631] [2024-11-13 14:24:03,654 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:24:03,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:03,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:03,658 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:03,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 14:24:03,713 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:24:03,713 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:03,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 14:24:03,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:24:03,753 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:03,823 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:24:03,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954872631] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:03,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:03,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-11-13 14:24:03,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529397934] [2024-11-13 14:24:03,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:03,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:24:03,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:03,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:24:03,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:24:03,827 INFO L87 Difference]: Start difference. First operand 163 states and 224 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:03,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:03,970 INFO L93 Difference]: Finished difference Result 180 states and 242 transitions. [2024-11-13 14:24:03,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:24:03,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 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 14:24:03,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:03,972 INFO L225 Difference]: With dead ends: 180 [2024-11-13 14:24:03,972 INFO L226 Difference]: Without dead ends: 162 [2024-11-13 14:24:03,972 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:24:03,973 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:03,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 79 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:24:03,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-13 14:24:04,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2024-11-13 14:24:04,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.3860759493670887) internal successors, (219), 158 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:04,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 219 transitions. [2024-11-13 14:24:04,031 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 219 transitions. Word has length 23 [2024-11-13 14:24:04,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:04,032 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 219 transitions. [2024-11-13 14:24:04,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:04,032 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 219 transitions. [2024-11-13 14:24:04,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 14:24:04,032 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:04,032 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:04,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 14:24:04,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:04,233 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:04,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:04,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1432241121, now seen corresponding path program 3 times [2024-11-13 14:24:04,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:04,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771586993] [2024-11-13 14:24:04,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:04,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:04,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:24:04,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:04,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771586993] [2024-11-13 14:24:04,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771586993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:04,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542607652] [2024-11-13 14:24:04,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:24:04,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:04,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:04,409 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:04,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 14:24:04,467 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 14:24:04,467 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:04,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:24:04,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:24:04,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:24:04,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542607652] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:04,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:04,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2024-11-13 14:24:04,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820106484] [2024-11-13 14:24:04,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:04,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 14:24:04,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:04,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 14:24:04,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2024-11-13 14:24:04,939 INFO L87 Difference]: Start difference. First operand 159 states and 219 transitions. Second operand has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 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 14:24:05,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:05,806 INFO L93 Difference]: Finished difference Result 281 states and 357 transitions. [2024-11-13 14:24:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 14:24:05,807 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 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) Word has length 23 [2024-11-13 14:24:05,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:05,809 INFO L225 Difference]: With dead ends: 281 [2024-11-13 14:24:05,809 INFO L226 Difference]: Without dead ends: 261 [2024-11-13 14:24:05,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 14:24:05,811 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 105 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:05,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 103 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:24:05,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-13 14:24:05,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 173. [2024-11-13 14:24:05,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.4069767441860466) internal successors, (242), 172 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 14:24:05,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 242 transitions. [2024-11-13 14:24:05,927 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 242 transitions. Word has length 23 [2024-11-13 14:24:05,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:05,927 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 242 transitions. [2024-11-13 14:24:05,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 27 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 14:24:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 242 transitions. [2024-11-13 14:24:05,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 14:24:05,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:05,928 INFO L215 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:05,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 14:24:06,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:06,128 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:06,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:06,129 INFO L85 PathProgramCache]: Analyzing trace with hash 971399313, now seen corresponding path program 1 times [2024-11-13 14:24:06,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:06,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448009269] [2024-11-13 14:24:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:06,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:24:06,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:06,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448009269] [2024-11-13 14:24:06,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448009269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:06,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118545541] [2024-11-13 14:24:06,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:06,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:06,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:06,394 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:06,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 14:24:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:06,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:24:06,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:24:06,523 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2024-11-13 14:24:06,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118545541] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:06,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:24:06,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16, 16] total 19 [2024-11-13 14:24:06,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699200104] [2024-11-13 14:24:06,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:24:06,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:24:06,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:06,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:24:06,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:24:06,598 INFO L87 Difference]: Start difference. First operand 173 states and 242 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:06,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:24:06,753 INFO L93 Difference]: Finished difference Result 178 states and 246 transitions. [2024-11-13 14:24:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:24:06,753 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 14:24:06,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:24:06,755 INFO L225 Difference]: With dead ends: 178 [2024-11-13 14:24:06,755 INFO L226 Difference]: Without dead ends: 167 [2024-11-13 14:24:06,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:24:06,756 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:24:06,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:24:06,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-13 14:24:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-13 14:24:06,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.3855421686746987) internal successors, (230), 166 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 14:24:06,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 230 transitions. [2024-11-13 14:24:06,902 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 230 transitions. Word has length 23 [2024-11-13 14:24:06,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:24:06,903 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 230 transitions. [2024-11-13 14:24:06,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:24:06,903 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 230 transitions. [2024-11-13 14:24:06,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 14:24:06,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:24:06,903 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:24:06,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 14:24:07,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:07,108 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:24:07,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:24:07,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1940436561, now seen corresponding path program 4 times [2024-11-13 14:24:07,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:24:07,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611135943] [2024-11-13 14:24:07,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:24:07,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:24:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:07,432 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:24:07,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:07,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611135943] [2024-11-13 14:24:07,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611135943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:07,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37401536] [2024-11-13 14:24:07,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:24:07,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:07,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:07,436 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:07,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 14:24:07,509 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:24:07,509 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:24:07,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:24:07,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:24:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:24:07,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:24:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:24:07,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37401536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:24:07,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:24:07,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 23 [2024-11-13 14:24:07,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408894978] [2024-11-13 14:24:07,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:24:07,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 14:24:07,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:24:07,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 14:24:07,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:24:07,858 INFO L87 Difference]: Start difference. First operand 167 states and 230 transitions. Second operand has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 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 14:24:20,070 WARN L286 SmtUtils]: Spent 12.04s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 14:24:28,124 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 14:24:44,468 WARN L286 SmtUtils]: Spent 12.03s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 14:24:52,576 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 18 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 14:25:04,776 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 14:25:13,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:13,277 INFO L93 Difference]: Finished difference Result 399 states and 591 transitions. [2024-11-13 14:25:13,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 14:25:13,277 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 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 25 [2024-11-13 14:25:13,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:13,280 INFO L225 Difference]: With dead ends: 399 [2024-11-13 14:25:13,280 INFO L226 Difference]: Without dead ends: 394 [2024-11-13 14:25:13,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 65.0s TimeCoverageRelationStatistics Valid=433, Invalid=973, Unknown=0, NotChecked=0, Total=1406 [2024-11-13 14:25:13,283 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 137 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:13,284 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 187 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:25:13,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2024-11-13 14:25:13,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 271. [2024-11-13 14:25:13,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.5074074074074073) internal successors, (407), 270 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 14:25:13,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 407 transitions. [2024-11-13 14:25:13,450 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 407 transitions. Word has length 25 [2024-11-13 14:25:13,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:13,450 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 407 transitions. [2024-11-13 14:25:13,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 23 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 14:25:13,451 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 407 transitions. [2024-11-13 14:25:13,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 14:25:13,452 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:13,452 INFO L215 NwaCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:13,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 14:25:13,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 14:25:13,657 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:13,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:13,657 INFO L85 PathProgramCache]: Analyzing trace with hash -62209491, now seen corresponding path program 11 times [2024-11-13 14:25:13,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:13,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772508161] [2024-11-13 14:25:13,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:13,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:14,056 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:25:14,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:14,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772508161] [2024-11-13 14:25:14,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772508161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:14,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759922660] [2024-11-13 14:25:14,057 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:25:14,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:14,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:14,060 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:14,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 14:25:14,162 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-13 14:25:14,162 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:25:14,164 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 14:25:14,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:25:14,236 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:15,181 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:25:15,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759922660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:15,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:15,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2024-11-13 14:25:15,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872902355] [2024-11-13 14:25:15,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:15,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 14:25:15,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:15,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 14:25:15,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=818, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 14:25:15,184 INFO L87 Difference]: Start difference. First operand 271 states and 407 transitions. Second operand has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 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 14:25:32,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:32,232 INFO L93 Difference]: Finished difference Result 856 states and 1374 transitions. [2024-11-13 14:25:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2024-11-13 14:25:32,233 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 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 25 [2024-11-13 14:25:32,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:32,236 INFO L225 Difference]: With dead ends: 856 [2024-11-13 14:25:32,237 INFO L226 Difference]: Without dead ends: 824 [2024-11-13 14:25:32,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6649 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=4904, Invalid=12918, Unknown=0, NotChecked=0, Total=17822 [2024-11-13 14:25:32,241 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 994 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:32,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 414 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-13 14:25:32,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2024-11-13 14:25:32,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 315. [2024-11-13 14:25:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.5222929936305734) internal successors, (478), 314 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:32,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 478 transitions. [2024-11-13 14:25:32,409 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 478 transitions. Word has length 25 [2024-11-13 14:25:32,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:32,409 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 478 transitions. [2024-11-13 14:25:32,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 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 14:25:32,409 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 478 transitions. [2024-11-13 14:25:32,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 14:25:32,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:32,410 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:32,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 14:25:32,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 14:25:32,611 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:32,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:32,611 INFO L85 PathProgramCache]: Analyzing trace with hash 507704571, now seen corresponding path program 12 times [2024-11-13 14:25:32,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:32,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893946386] [2024-11-13 14:25:32,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:32,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:33,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:33,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893946386] [2024-11-13 14:25:33,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893946386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:33,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856361782] [2024-11-13 14:25:33,385 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:25:33,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:33,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:33,388 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:33,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 14:25:33,523 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 14:25:33,523 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:25:33,525 WARN L253 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-13 14:25:33,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:34,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:25:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856361782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:36,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:36,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 22] total 56 [2024-11-13 14:25:36,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615667746] [2024-11-13 14:25:36,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:36,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-13 14:25:36,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:36,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-13 14:25:36,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2917, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 14:25:36,555 INFO L87 Difference]: Start difference. First operand 315 states and 478 transitions. Second operand has 56 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 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 14:25:41,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:41,653 INFO L93 Difference]: Finished difference Result 339 states and 501 transitions. [2024-11-13 14:25:41,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 14:25:41,653 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 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 26 [2024-11-13 14:25:41,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:41,655 INFO L225 Difference]: With dead ends: 339 [2024-11-13 14:25:41,655 INFO L226 Difference]: Without dead ends: 319 [2024-11-13 14:25:41,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=645, Invalid=5675, Unknown=0, NotChecked=0, Total=6320 [2024-11-13 14:25:41,657 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 96 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 1205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:41,657 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 255 Invalid, 1205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 14:25:41,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2024-11-13 14:25:41,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 309. [2024-11-13 14:25:41,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.5292207792207793) internal successors, (471), 308 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 471 transitions. [2024-11-13 14:25:41,813 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 471 transitions. Word has length 26 [2024-11-13 14:25:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:41,813 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 471 transitions. [2024-11-13 14:25:41,813 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 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 14:25:41,813 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 471 transitions. [2024-11-13 14:25:41,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 14:25:41,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:41,814 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:41,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-13 14:25:42,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 14:25:42,019 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:42,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:42,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1501452717, now seen corresponding path program 13 times [2024-11-13 14:25:42,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:42,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752682073] [2024-11-13 14:25:42,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:42,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 14:25:42,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:42,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752682073] [2024-11-13 14:25:42,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752682073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:42,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45594991] [2024-11-13 14:25:42,211 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:25:42,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:42,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:42,213 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:42,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 14:25:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:42,278 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-13 14:25:42,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 14:25:42,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:42,691 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-13 14:25:42,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45594991] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:42,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:42,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 28 [2024-11-13 14:25:42,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387096335] [2024-11-13 14:25:42,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:42,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 14:25:42,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:42,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 14:25:42,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:25:42,693 INFO L87 Difference]: Start difference. First operand 309 states and 471 transitions. Second operand has 28 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 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 14:25:43,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:43,607 INFO L93 Difference]: Finished difference Result 427 states and 598 transitions. [2024-11-13 14:25:43,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 14:25:43,608 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 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) Word has length 28 [2024-11-13 14:25:43,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:43,609 INFO L225 Difference]: With dead ends: 427 [2024-11-13 14:25:43,609 INFO L226 Difference]: Without dead ends: 362 [2024-11-13 14:25:43,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=1048, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 14:25:43,611 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:43,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 104 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:25:43,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2024-11-13 14:25:43,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 297. [2024-11-13 14:25:43,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.5033783783783783) internal successors, (445), 296 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:25:43,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 445 transitions. [2024-11-13 14:25:43,848 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 445 transitions. Word has length 28 [2024-11-13 14:25:43,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:43,848 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 445 transitions. [2024-11-13 14:25:43,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.4642857142857142) internal successors, (41), 28 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 14:25:43,849 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 445 transitions. [2024-11-13 14:25:43,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 14:25:43,849 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:43,849 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:43,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 14:25:44,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:44,050 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:44,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:44,050 INFO L85 PathProgramCache]: Analyzing trace with hash -510856197, now seen corresponding path program 14 times [2024-11-13 14:25:44,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:44,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92378491] [2024-11-13 14:25:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:44,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:44,253 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 14:25:44,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:44,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92378491] [2024-11-13 14:25:44,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92378491] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:44,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256916614] [2024-11-13 14:25:44,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:25:44,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:44,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:44,256 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:44,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 14:25:44,324 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:25:44,324 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:25:44,326 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:25:44,327 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 14:25:44,424 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:25:44,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256916614] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:44,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:44,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10] total 25 [2024-11-13 14:25:44,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429577466] [2024-11-13 14:25:44,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:44,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 14:25:44,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:44,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 14:25:44,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2024-11-13 14:25:44,730 INFO L87 Difference]: Start difference. First operand 297 states and 445 transitions. Second operand has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 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 14:25:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:25:45,732 INFO L93 Difference]: Finished difference Result 395 states and 546 transitions. [2024-11-13 14:25:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 14:25:45,732 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 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) Word has length 28 [2024-11-13 14:25:45,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:25:45,735 INFO L225 Difference]: With dead ends: 395 [2024-11-13 14:25:45,735 INFO L226 Difference]: Without dead ends: 335 [2024-11-13 14:25:45,735 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=255, Invalid=1385, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 14:25:45,736 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 24 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:25:45,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 122 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:25:45,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-13 14:25:45,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 280. [2024-11-13 14:25:45,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.4838709677419355) internal successors, (414), 279 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 14:25:45,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 414 transitions. [2024-11-13 14:25:45,885 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 414 transitions. Word has length 28 [2024-11-13 14:25:45,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:25:45,885 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 414 transitions. [2024-11-13 14:25:45,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.52) internal successors, (38), 25 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 14:25:45,885 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 414 transitions. [2024-11-13 14:25:45,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 14:25:45,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:25:45,886 INFO L215 NwaCegarLoop]: trace histogram [13, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:25:45,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 14:25:46,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-13 14:25:46,086 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:25:46,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:25:46,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1155637473, now seen corresponding path program 15 times [2024-11-13 14:25:46,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:25:46,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665978826] [2024-11-13 14:25:46,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:25:46,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:25:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:25:46,426 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:25:46,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:25:46,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665978826] [2024-11-13 14:25:46,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665978826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:25:46,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447562949] [2024-11-13 14:25:46,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:25:46,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:25:46,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:25:46,429 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:25:46,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 14:25:46,535 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-13 14:25:46,535 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:25:46,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-13 14:25:46,545 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:25:46,605 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:25:46,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:25:47,198 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:25:47,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447562949] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:25:47,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:25:47,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2024-11-13 14:25:47,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093326572] [2024-11-13 14:25:47,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:25:47,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-13 14:25:47,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:25:47,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-13 14:25:47,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2024-11-13 14:25:47,200 INFO L87 Difference]: Start difference. First operand 280 states and 414 transitions. Second operand has 37 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 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 14:26:14,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:14,376 INFO L93 Difference]: Finished difference Result 847 states and 1243 transitions. [2024-11-13 14:26:14,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2024-11-13 14:26:14,377 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 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 29 [2024-11-13 14:26:14,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:14,380 INFO L225 Difference]: With dead ends: 847 [2024-11-13 14:26:14,380 INFO L226 Difference]: Without dead ends: 808 [2024-11-13 14:26:14,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14127 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=8639, Invalid=27271, Unknown=0, NotChecked=0, Total=35910 [2024-11-13 14:26:14,384 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 1223 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:14,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 463 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 14:26:14,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2024-11-13 14:26:14,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 321. [2024-11-13 14:26:14,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.5) internal successors, (480), 320 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:14,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 480 transitions. [2024-11-13 14:26:14,622 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 480 transitions. Word has length 29 [2024-11-13 14:26:14,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:14,622 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 480 transitions. [2024-11-13 14:26:14,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 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 14:26:14,622 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 480 transitions. [2024-11-13 14:26:14,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 14:26:14,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:14,623 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:14,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 14:26:14,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-13 14:26:14,824 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:26:14,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:14,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1152303287, now seen corresponding path program 16 times [2024-11-13 14:26:14,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:14,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370064183] [2024-11-13 14:26:14,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:14,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:15,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:15,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370064183] [2024-11-13 14:26:15,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370064183] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:15,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612767601] [2024-11-13 14:26:15,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:26:15,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:15,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:15,618 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:15,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 14:26:15,738 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:26:15,738 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:26:15,740 WARN L253 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-13 14:26:15,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:17,220 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:17,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:26:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:19,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612767601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:26:19,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:26:19,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27, 26] total 68 [2024-11-13 14:26:19,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498610249] [2024-11-13 14:26:19,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:26:19,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-13 14:26:19,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:19,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-13 14:26:19,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=510, Invalid=4046, Unknown=0, NotChecked=0, Total=4556 [2024-11-13 14:26:19,458 INFO L87 Difference]: Start difference. First operand 321 states and 480 transitions. Second operand has 68 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:23,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:23,632 INFO L93 Difference]: Finished difference Result 372 states and 531 transitions. [2024-11-13 14:26:23,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 14:26:23,632 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 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 30 [2024-11-13 14:26:23,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:23,633 INFO L225 Difference]: With dead ends: 372 [2024-11-13 14:26:23,633 INFO L226 Difference]: Without dead ends: 322 [2024-11-13 14:26:23,634 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1912 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1093, Invalid=6739, Unknown=0, NotChecked=0, Total=7832 [2024-11-13 14:26:23,635 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 105 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 1153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:23,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 236 Invalid, 1153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 14:26:23,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-13 14:26:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 307. [2024-11-13 14:26:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.5065359477124183) internal successors, (461), 306 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:23,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 461 transitions. [2024-11-13 14:26:23,804 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 461 transitions. Word has length 30 [2024-11-13 14:26:23,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:23,804 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 461 transitions. [2024-11-13 14:26:23,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 68 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:23,805 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 461 transitions. [2024-11-13 14:26:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 14:26:23,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:23,806 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:23,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-13 14:26:24,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-13 14:26:24,006 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:26:24,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:24,006 INFO L85 PathProgramCache]: Analyzing trace with hash 843769887, now seen corresponding path program 17 times [2024-11-13 14:26:24,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:24,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889774260] [2024-11-13 14:26:24,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:24,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:24,272 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:26:24,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:24,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889774260] [2024-11-13 14:26:24,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889774260] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:24,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903791010] [2024-11-13 14:26:24,273 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:26:24,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:24,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:24,275 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:24,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 14:26:24,422 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 14:26:24,422 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:26:24,423 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:26:24,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:26:24,488 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:26:24,652 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:26:24,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903791010] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:26:24,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:26:24,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-11-13 14:26:24,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306986584] [2024-11-13 14:26:24,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:26:24,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:26:24,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:24,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:26:24,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:26:24,654 INFO L87 Difference]: Start difference. First operand 307 states and 461 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:25,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:25,378 INFO L93 Difference]: Finished difference Result 359 states and 522 transitions. [2024-11-13 14:26:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 14:26:25,378 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 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 33 [2024-11-13 14:26:25,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:25,379 INFO L225 Difference]: With dead ends: 359 [2024-11-13 14:26:25,379 INFO L226 Difference]: Without dead ends: 355 [2024-11-13 14:26:25,380 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 57 SyntacticMatches, 14 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=586, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:26:25,380 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:25,381 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 132 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:26:25,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-13 14:26:25,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 334. [2024-11-13 14:26:25,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 1.4894894894894894) internal successors, (496), 333 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 496 transitions. [2024-11-13 14:26:25,709 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 496 transitions. Word has length 33 [2024-11-13 14:26:25,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:25,710 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 496 transitions. [2024-11-13 14:26:25,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:25,710 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 496 transitions. [2024-11-13 14:26:25,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 14:26:25,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:25,711 INFO L215 NwaCegarLoop]: trace histogram [14, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:25,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 14:26:25,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-13 14:26:25,911 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:26:25,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:25,912 INFO L85 PathProgramCache]: Analyzing trace with hash -857013523, now seen corresponding path program 18 times [2024-11-13 14:26:25,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:26:25,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133920929] [2024-11-13 14:26:25,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:25,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:26:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:26:26,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:26:26,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133920929] [2024-11-13 14:26:26,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133920929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:26:26,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817698784] [2024-11-13 14:26:26,348 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:26:26,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:26,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:26,351 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:26,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 14:26:26,469 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-13 14:26:26,469 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:26:26,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-13 14:26:26,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:26:26,542 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:26:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 111 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:26:27,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817698784] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:26:27,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:26:27,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2024-11-13 14:26:27,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558161022] [2024-11-13 14:26:27,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:26:27,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 14:26:27,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:26:27,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 14:26:27,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1316, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 14:26:27,345 INFO L87 Difference]: Start difference. First operand 334 states and 496 transitions. Second operand has 41 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 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 14:27:17,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:17,022 INFO L93 Difference]: Finished difference Result 1014 states and 1430 transitions. [2024-11-13 14:27:17,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2024-11-13 14:27:17,023 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 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 33 [2024-11-13 14:27:17,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:17,027 INFO L225 Difference]: With dead ends: 1014 [2024-11-13 14:27:17,027 INFO L226 Difference]: Without dead ends: 936 [2024-11-13 14:27:17,031 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24951 ImplicationChecksByTransitivity, 45.2s TimeCoverageRelationStatistics Valid=13370, Invalid=47886, Unknown=0, NotChecked=0, Total=61256 [2024-11-13 14:27:17,032 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 1549 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 951 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 951 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:17,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 496 Invalid, 2279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [951 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-13 14:27:17,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2024-11-13 14:27:17,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 380. [2024-11-13 14:27:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.4986807387862797) internal successors, (568), 379 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:27:17,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 568 transitions. [2024-11-13 14:27:17,389 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 568 transitions. Word has length 33 [2024-11-13 14:27:17,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:17,389 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 568 transitions. [2024-11-13 14:27:17,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 41 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 14:27:17,389 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 568 transitions. [2024-11-13 14:27:17,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 14:27:17,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:17,391 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:17,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-13 14:27:17,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:17,595 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:27:17,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash 388728123, now seen corresponding path program 19 times [2024-11-13 14:27:17,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:17,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265672940] [2024-11-13 14:27:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:17,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:18,818 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:18,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:18,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265672940] [2024-11-13 14:27:18,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265672940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:27:18,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940315270] [2024-11-13 14:27:18,818 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:27:18,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:18,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:18,821 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:18,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 14:27:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:19,023 WARN L253 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-13 14:27:19,025 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:21,374 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:21,375 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:23,239 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:23,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940315270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:23,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:27:23,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 30, 24] total 60 [2024-11-13 14:27:23,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482851459] [2024-11-13 14:27:23,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:23,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-13 14:27:23,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:23,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-13 14:27:23,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=3283, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 14:27:23,241 INFO L87 Difference]: Start difference. First operand 380 states and 568 transitions. Second operand has 60 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 60 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 14:27:25,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:25,983 INFO L93 Difference]: Finished difference Result 421 states and 610 transitions. [2024-11-13 14:27:25,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 14:27:25,984 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 60 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 34 [2024-11-13 14:27:25,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:25,986 INFO L225 Difference]: With dead ends: 421 [2024-11-13 14:27:25,986 INFO L226 Difference]: Without dead ends: 389 [2024-11-13 14:27:25,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 18 SyntacticMatches, 20 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1340 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=391, Invalid=4439, Unknown=0, NotChecked=0, Total=4830 [2024-11-13 14:27:25,987 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 25 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:25,988 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 141 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 14:27:25,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-13 14:27:26,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 382. [2024-11-13 14:27:26,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 1.4803149606299213) internal successors, (564), 381 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:27:26,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 564 transitions. [2024-11-13 14:27:26,368 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 564 transitions. Word has length 34 [2024-11-13 14:27:26,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:26,368 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 564 transitions. [2024-11-13 14:27:26,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 60 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 14:27:26,369 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 564 transitions. [2024-11-13 14:27:26,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 14:27:26,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:26,370 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:26,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 14:27:26,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-13 14:27:26,571 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:27:26,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:26,571 INFO L85 PathProgramCache]: Analyzing trace with hash -670564727, now seen corresponding path program 20 times [2024-11-13 14:27:26,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:26,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095719339] [2024-11-13 14:27:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:26,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-13 14:27:26,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:26,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095719339] [2024-11-13 14:27:26,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095719339] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:27:26,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37347307] [2024-11-13 14:27:26,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:27:26,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:26,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:26,969 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:26,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 14:27:27,047 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:27:27,047 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:27:27,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-13 14:27:27,050 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-13 14:27:27,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:27,763 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-13 14:27:27,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37347307] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:27,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:27:27,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 14] total 34 [2024-11-13 14:27:27,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962956494] [2024-11-13 14:27:27,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:27,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 14:27:27,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:27,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 14:27:27,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=956, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:27:27,765 INFO L87 Difference]: Start difference. First operand 382 states and 564 transitions. Second operand has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:27:30,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:30,084 INFO L93 Difference]: Finished difference Result 489 states and 677 transitions. [2024-11-13 14:27:30,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-13 14:27:30,085 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 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 34 [2024-11-13 14:27:30,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:30,086 INFO L225 Difference]: With dead ends: 489 [2024-11-13 14:27:30,086 INFO L226 Difference]: Without dead ends: 423 [2024-11-13 14:27:30,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=412, Invalid=2450, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 14:27:30,088 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:30,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 139 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:27:30,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2024-11-13 14:27:30,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 360. [2024-11-13 14:27:30,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 1.4512534818941505) internal successors, (521), 359 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:27:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 521 transitions. [2024-11-13 14:27:30,502 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 521 transitions. Word has length 34 [2024-11-13 14:27:30,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:30,502 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 521 transitions. [2024-11-13 14:27:30,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:27:30,503 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 521 transitions. [2024-11-13 14:27:30,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 14:27:30,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:30,503 INFO L215 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:30,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 14:27:30,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-13 14:27:30,704 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:27:30,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:30,704 INFO L85 PathProgramCache]: Analyzing trace with hash -832664673, now seen corresponding path program 21 times [2024-11-13 14:27:30,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:30,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90681679] [2024-11-13 14:27:30,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:30,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:30,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-13 14:27:30,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:30,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90681679] [2024-11-13 14:27:30,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90681679] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:27:30,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678073184] [2024-11-13 14:27:30,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:27:30,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:30,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:30,972 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:30,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 14:27:31,069 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 14:27:31,069 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:27:31,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 14:27:31,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-13 14:27:31,160 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-13 14:27:31,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678073184] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:31,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:27:31,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-11-13 14:27:31,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313239299] [2024-11-13 14:27:31,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:31,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:27:31,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:31,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:27:31,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:27:31,362 INFO L87 Difference]: Start difference. First operand 360 states and 521 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:27:31,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:31,749 INFO L93 Difference]: Finished difference Result 377 states and 539 transitions. [2024-11-13 14:27:31,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:27:31,749 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 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) Word has length 35 [2024-11-13 14:27:31,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:31,751 INFO L225 Difference]: With dead ends: 377 [2024-11-13 14:27:31,751 INFO L226 Difference]: Without dead ends: 350 [2024-11-13 14:27:31,752 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 64 SyntacticMatches, 12 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:27:31,752 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 17 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:31,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 186 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:27:31,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2024-11-13 14:27:32,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 344. [2024-11-13 14:27:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 1.469387755102041) internal successors, (504), 343 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:27:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 504 transitions. [2024-11-13 14:27:32,060 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 504 transitions. Word has length 35 [2024-11-13 14:27:32,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:32,060 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 504 transitions. [2024-11-13 14:27:32,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:27:32,060 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 504 transitions. [2024-11-13 14:27:32,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 14:27:32,062 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:32,062 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:32,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 14:27:32,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-13 14:27:32,267 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:27:32,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:32,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1408758537, now seen corresponding path program 22 times [2024-11-13 14:27:32,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:27:32,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890254278] [2024-11-13 14:27:32,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:32,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:27:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 28 proven. 43 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 14:27:32,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:27:32,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890254278] [2024-11-13 14:27:32,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890254278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:27:32,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582190341] [2024-11-13 14:27:32,792 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:27:32,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:32,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:32,794 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:32,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 14:27:32,854 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:27:32,854 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:27:32,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 14:27:32,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:33,096 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-13 14:27:33,096 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:27:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 12 proven. 44 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-13 14:27:33,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582190341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:27:33,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:27:33,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 10] total 24 [2024-11-13 14:27:33,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930198088] [2024-11-13 14:27:33,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:27:33,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 14:27:33,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:27:33,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 14:27:33,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:27:33,454 INFO L87 Difference]: Start difference. First operand 344 states and 504 transitions. Second operand has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 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 14:27:38,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:27:46,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:27:54,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:28:00,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:28:08,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:28:16,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:28:21,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:28:25,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:28:25,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:25,760 INFO L93 Difference]: Finished difference Result 560 states and 802 transitions. [2024-11-13 14:28:25,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-13 14:28:25,760 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 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 36 [2024-11-13 14:28:25,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:25,762 INFO L225 Difference]: With dead ends: 560 [2024-11-13 14:28:25,762 INFO L226 Difference]: Without dead ends: 556 [2024-11-13 14:28:25,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 54 SyntacticMatches, 15 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=662, Invalid=2755, Unknown=5, NotChecked=0, Total=3422 [2024-11-13 14:28:25,763 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 145 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 63 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:25,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 177 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 267 Invalid, 7 Unknown, 0 Unchecked, 30.3s Time] [2024-11-13 14:28:25,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2024-11-13 14:28:26,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 425. [2024-11-13 14:28:26,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 1.474056603773585) internal successors, (625), 424 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:28:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 625 transitions. [2024-11-13 14:28:26,158 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 625 transitions. Word has length 36 [2024-11-13 14:28:26,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:26,159 INFO L471 AbstractCegarLoop]: Abstraction has 425 states and 625 transitions. [2024-11-13 14:28:26,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.0833333333333335) internal successors, (50), 24 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 14:28:26,159 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 625 transitions. [2024-11-13 14:28:26,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 14:28:26,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:26,160 INFO L215 NwaCegarLoop]: trace histogram [12, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:28:26,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-13 14:28:26,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:26,360 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:28:26,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:26,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1338570349, now seen corresponding path program 5 times [2024-11-13 14:28:26,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:28:26,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055043404] [2024-11-13 14:28:26,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:26,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:28:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:26,720 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 14:28:26,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:26,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055043404] [2024-11-13 14:28:26,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055043404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:26,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320623790] [2024-11-13 14:28:26,720 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:28:26,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:26,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:26,723 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:26,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 14:28:26,893 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-13 14:28:26,893 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:28:26,895 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-13 14:28:26,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 14:28:27,173 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:28:28,078 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 40 proven. 56 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-13 14:28:28,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320623790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:28:28,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:28:28,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 42 [2024-11-13 14:28:28,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999151469] [2024-11-13 14:28:28,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:28:28,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2024-11-13 14:28:28,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:28:28,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2024-11-13 14:28:28,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=1433, Unknown=0, NotChecked=0, Total=1722 [2024-11-13 14:28:28,080 INFO L87 Difference]: Start difference. First operand 425 states and 625 transitions. Second operand has 42 states, 42 states have (on average 1.380952380952381) internal successors, (58), 42 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 14:28:32,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:32,362 INFO L93 Difference]: Finished difference Result 719 states and 943 transitions. [2024-11-13 14:28:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-13 14:28:32,363 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.380952380952381) internal successors, (58), 42 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) Word has length 36 [2024-11-13 14:28:32,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:32,365 INFO L225 Difference]: With dead ends: 719 [2024-11-13 14:28:32,365 INFO L226 Difference]: Without dead ends: 673 [2024-11-13 14:28:32,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1199, Invalid=4653, Unknown=0, NotChecked=0, Total=5852 [2024-11-13 14:28:32,367 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 265 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:32,367 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 158 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:28:32,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2024-11-13 14:28:32,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 445. [2024-11-13 14:28:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.472972972972973) internal successors, (654), 444 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:28:32,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 654 transitions. [2024-11-13 14:28:32,818 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 654 transitions. Word has length 36 [2024-11-13 14:28:32,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:32,819 INFO L471 AbstractCegarLoop]: Abstraction has 445 states and 654 transitions. [2024-11-13 14:28:32,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.380952380952381) internal successors, (58), 42 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 14:28:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 654 transitions. [2024-11-13 14:28:32,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:28:32,819 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:32,819 INFO L215 NwaCegarLoop]: trace histogram [15, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:28:32,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 14:28:33,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-13 14:28:33,020 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:28:33,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:33,020 INFO L85 PathProgramCache]: Analyzing trace with hash 554826591, now seen corresponding path program 23 times [2024-11-13 14:28:33,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:28:33,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798038385] [2024-11-13 14:28:33,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:33,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:28:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 14:28:33,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:28:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798038385] [2024-11-13 14:28:33,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798038385] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:28:33,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630385858] [2024-11-13 14:28:33,636 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:28:33,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:33,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:33,638 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:33,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 14:28:33,853 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-13 14:28:33,853 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:28:33,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-13 14:28:33,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:33,929 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 14:28:33,929 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:28:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 14:28:35,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630385858] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:28:35,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:28:35,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2024-11-13 14:28:35,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541971903] [2024-11-13 14:28:35,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:28:35,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-13 14:28:35,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:28:35,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-13 14:28:35,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=373, Invalid=1607, Unknown=0, NotChecked=0, Total=1980 [2024-11-13 14:28:35,207 INFO L87 Difference]: Start difference. First operand 445 states and 654 transitions. Second operand has 45 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:30:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:14,560 INFO L93 Difference]: Finished difference Result 1370 states and 1877 transitions. [2024-11-13 14:30:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 284 states. [2024-11-13 14:30:14,560 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 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 37 [2024-11-13 14:30:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:14,564 INFO L225 Difference]: With dead ends: 1370 [2024-11-13 14:30:14,564 INFO L226 Difference]: Without dead ends: 1254 [2024-11-13 14:30:14,571 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39433 ImplicationChecksByTransitivity, 91.9s TimeCoverageRelationStatistics Valid=19408, Invalid=75764, Unknown=0, NotChecked=0, Total=95172 [2024-11-13 14:30:14,571 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 2184 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 1384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1384 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:14,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2184 Valid, 511 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1384 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-13 14:30:14,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2024-11-13 14:30:14,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 455. [2024-11-13 14:30:14,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 1.460352422907489) internal successors, (663), 454 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:30:14,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 663 transitions. [2024-11-13 14:30:14,975 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 663 transitions. Word has length 37 [2024-11-13 14:30:14,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:14,975 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 663 transitions. [2024-11-13 14:30:14,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 45 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:30:14,975 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 663 transitions. [2024-11-13 14:30:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 14:30:14,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:14,976 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:30:14,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 14:30:15,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-13 14:30:15,177 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:15,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:15,177 INFO L85 PathProgramCache]: Analyzing trace with hash 955548681, now seen corresponding path program 24 times [2024-11-13 14:30:15,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:15,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113255836] [2024-11-13 14:30:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:15,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:16,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:16,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113255836] [2024-11-13 14:30:16,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113255836] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:30:16,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975554453] [2024-11-13 14:30:16,492 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:30:16,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:16,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:16,494 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:30:16,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 14:30:16,691 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-13 14:30:16,691 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:30:16,693 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-11-13 14:30:16,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:30:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:19,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:30:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:22,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975554453] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:30:22,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:30:22,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 27] total 61 [2024-11-13 14:30:22,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450616390] [2024-11-13 14:30:22,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:30:22,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-13 14:30:22,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:22,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-13 14:30:22,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=3497, Unknown=0, NotChecked=0, Total=3660 [2024-11-13 14:30:22,235 INFO L87 Difference]: Start difference. First operand 455 states and 663 transitions. Second operand has 61 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 61 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 14:30:27,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:27,880 INFO L93 Difference]: Finished difference Result 476 states and 684 transitions. [2024-11-13 14:30:27,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-13 14:30:27,880 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 61 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 38 [2024-11-13 14:30:27,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:27,883 INFO L225 Difference]: With dead ends: 476 [2024-11-13 14:30:27,883 INFO L226 Difference]: Without dead ends: 472 [2024-11-13 14:30:27,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 26 SyntacticMatches, 23 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=319, Invalid=4937, Unknown=0, NotChecked=0, Total=5256 [2024-11-13 14:30:27,884 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 45 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 1563 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 1625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:27,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 203 Invalid, 1625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 14:30:27,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-11-13 14:30:28,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 464. [2024-11-13 14:30:28,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 1.451403887688985) internal successors, (672), 463 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:30:28,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 672 transitions. [2024-11-13 14:30:28,386 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 672 transitions. Word has length 38 [2024-11-13 14:30:28,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:28,386 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 672 transitions. [2024-11-13 14:30:28,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 1.3934426229508197) internal successors, (85), 61 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 14:30:28,386 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 672 transitions. [2024-11-13 14:30:28,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 14:30:28,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:28,387 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:30:28,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 14:30:28,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-13 14:30:28,588 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:28,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:28,588 INFO L85 PathProgramCache]: Analyzing trace with hash 818971771, now seen corresponding path program 25 times [2024-11-13 14:30:28,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:28,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730668666] [2024-11-13 14:30:28,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:28,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:28,943 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 14:30:28,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:28,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730668666] [2024-11-13 14:30:28,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730668666] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:30:28,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742574937] [2024-11-13 14:30:28,944 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:30:28,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:28,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:28,947 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:30:28,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 14:30:29,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:29,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 14:30:29,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:30:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 14:30:29,280 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:30:30,148 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-13 14:30:30,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742574937] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:30:30,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:30:30,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 16] total 39 [2024-11-13 14:30:30,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068788597] [2024-11-13 14:30:30,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:30:30,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-13 14:30:30,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:30,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-13 14:30:30,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=1276, Unknown=0, NotChecked=0, Total=1482 [2024-11-13 14:30:30,150 INFO L87 Difference]: Start difference. First operand 464 states and 672 transitions. Second operand has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 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 14:30:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:33,425 INFO L93 Difference]: Finished difference Result 612 states and 837 transitions. [2024-11-13 14:30:33,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-13 14:30:33,425 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 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 38 [2024-11-13 14:30:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:33,428 INFO L225 Difference]: With dead ends: 612 [2024-11-13 14:30:33,428 INFO L226 Difference]: Without dead ends: 520 [2024-11-13 14:30:33,429 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=526, Invalid=3256, Unknown=0, NotChecked=0, Total=3782 [2024-11-13 14:30:33,429 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 51 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:33,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 122 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:30:33,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2024-11-13 14:30:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 441. [2024-11-13 14:30:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 1.425) internal successors, (627), 440 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:30:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 627 transitions. [2024-11-13 14:30:34,046 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 627 transitions. Word has length 38 [2024-11-13 14:30:34,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:34,046 INFO L471 AbstractCegarLoop]: Abstraction has 441 states and 627 transitions. [2024-11-13 14:30:34,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 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 14:30:34,046 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 627 transitions. [2024-11-13 14:30:34,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 14:30:34,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:34,047 INFO L215 NwaCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:30:34,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 14:30:34,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-13 14:30:34,247 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:30:34,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:34,248 INFO L85 PathProgramCache]: Analyzing trace with hash 216855419, now seen corresponding path program 4 times [2024-11-13 14:30:34,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:30:34,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216271511] [2024-11-13 14:30:34,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:34,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:30:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:35,212 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:35,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:30:35,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216271511] [2024-11-13 14:30:35,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216271511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:30:35,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430925230] [2024-11-13 14:30:35,212 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:30:35,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:35,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:35,215 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:30:35,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 14:30:35,293 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:30:35,293 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:30:35,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-13 14:30:35,296 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:30:35,401 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:35,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:30:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:38,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430925230] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:30:38,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:30:38,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2024-11-13 14:30:38,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163584838] [2024-11-13 14:30:38,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:30:38,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-13 14:30:38,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:30:38,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-13 14:30:38,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=966, Invalid=2940, Unknown=0, NotChecked=0, Total=3906 [2024-11-13 14:30:38,266 INFO L87 Difference]: Start difference. First operand 441 states and 627 transitions. Second operand has 63 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 63 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 14:32:31,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:32:31,016 INFO L93 Difference]: Finished difference Result 3170 states and 4662 transitions. [2024-11-13 14:32:31,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2024-11-13 14:32:31,016 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 63 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 38 [2024-11-13 14:32:31,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:32:31,026 INFO L225 Difference]: With dead ends: 3170 [2024-11-13 14:32:31,026 INFO L226 Difference]: Without dead ends: 2972 [2024-11-13 14:32:31,028 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7797 ImplicationChecksByTransitivity, 91.0s TimeCoverageRelationStatistics Valid=8995, Invalid=19735, Unknown=0, NotChecked=0, Total=28730 [2024-11-13 14:32:31,028 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 3892 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 1390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3892 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 4623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1390 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:32:31,029 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3892 Valid, 1542 Invalid, 4623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1390 Valid, 3233 Invalid, 0 Unknown, 0 Unchecked, 20.2s Time] [2024-11-13 14:32:31,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2972 states. [2024-11-13 14:32:32,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2972 to 694. [2024-11-13 14:32:32,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 1.4083694083694083) internal successors, (976), 693 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:32,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 976 transitions. [2024-11-13 14:32:32,315 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 976 transitions. Word has length 38 [2024-11-13 14:32:32,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:32:32,315 INFO L471 AbstractCegarLoop]: Abstraction has 694 states and 976 transitions. [2024-11-13 14:32:32,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 63 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 14:32:32,315 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 976 transitions. [2024-11-13 14:32:32,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 14:32:32,316 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:32:32,316 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:32,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 14:32:32,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-13 14:32:32,517 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:32:32,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:32,517 INFO L85 PathProgramCache]: Analyzing trace with hash -441096559, now seen corresponding path program 26 times [2024-11-13 14:32:32,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:32,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355614020] [2024-11-13 14:32:32,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:32,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-13 14:32:32,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:32,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355614020] [2024-11-13 14:32:32,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355614020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:32,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019235290] [2024-11-13 14:32:32,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:32:32,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:32,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:32,831 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:32,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-13 14:32:32,895 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:32:32,895 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:32:32,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:32:32,897 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-13 14:32:32,987 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:33,277 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-13 14:32:33,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019235290] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:32:33,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:32:33,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2024-11-13 14:32:33,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529296663] [2024-11-13 14:32:33,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:33,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:32:33,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:33,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:32:33,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:32:33,278 INFO L87 Difference]: Start difference. First operand 694 states and 976 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:34,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:32:34,661 INFO L93 Difference]: Finished difference Result 713 states and 996 transitions. [2024-11-13 14:32:34,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:32:34,662 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-13 14:32:34,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:32:34,664 INFO L225 Difference]: With dead ends: 713 [2024-11-13 14:32:34,664 INFO L226 Difference]: Without dead ends: 683 [2024-11-13 14:32:34,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 71 SyntacticMatches, 14 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:32:34,665 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 20 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:32:34,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 235 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:32:34,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2024-11-13 14:32:35,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 676. [2024-11-13 14:32:35,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 1.4177777777777778) internal successors, (957), 675 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:35,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 957 transitions. [2024-11-13 14:32:35,643 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 957 transitions. Word has length 39 [2024-11-13 14:32:35,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:32:35,643 INFO L471 AbstractCegarLoop]: Abstraction has 676 states and 957 transitions. [2024-11-13 14:32:35,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:35,643 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 957 transitions. [2024-11-13 14:32:35,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 14:32:35,644 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:32:35,644 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:32:35,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-13 14:32:35,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-13 14:32:35,844 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:32:35,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:35,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1966634757, now seen corresponding path program 27 times [2024-11-13 14:32:35,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:32:35,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448464077] [2024-11-13 14:32:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:35,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:32:35,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 36 proven. 57 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 14:32:36,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:32:36,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448464077] [2024-11-13 14:32:36,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448464077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:36,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604119397] [2024-11-13 14:32:36,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:32:36,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:36,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:36,646 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:36,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 14:32:36,736 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 14:32:36,736 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:32:36,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-13 14:32:36,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:37,068 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 14 proven. 58 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 14:32:37,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:37,467 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 14 proven. 58 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2024-11-13 14:32:37,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604119397] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:32:37,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:32:37,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11, 11] total 27 [2024-11-13 14:32:37,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375228797] [2024-11-13 14:32:37,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:37,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 14:32:37,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:32:37,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 14:32:37,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=538, Unknown=0, NotChecked=0, Total=702 [2024-11-13 14:32:37,468 INFO L87 Difference]: Start difference. First operand 676 states and 957 transitions. Second operand has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:32:42,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:32:48,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:32:52,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:33:00,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:33:12,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:33:20,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:33:25,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:33:33,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:33:37,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:33:42,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:33:43,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:33:43,272 INFO L93 Difference]: Finished difference Result 1015 states and 1417 transitions. [2024-11-13 14:33:43,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-11-13 14:33:43,272 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 0 states have call successors, (0), 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 14:33:43,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:33:43,275 INFO L225 Difference]: With dead ends: 1015 [2024-11-13 14:33:43,275 INFO L226 Difference]: Without dead ends: 1011 [2024-11-13 14:33:43,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 60 SyntacticMatches, 17 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1913 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=1002, Invalid=4543, Unknown=5, NotChecked=0, Total=5550 [2024-11-13 14:33:43,276 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 197 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 72 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:33:43,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 215 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 392 Invalid, 9 Unknown, 0 Unchecked, 37.7s Time] [2024-11-13 14:33:43,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2024-11-13 14:33:44,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 875. [2024-11-13 14:33:44,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 1.4244851258581235) internal successors, (1245), 874 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:33:44,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1245 transitions. [2024-11-13 14:33:44,669 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1245 transitions. Word has length 40 [2024-11-13 14:33:44,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:33:44,669 INFO L471 AbstractCegarLoop]: Abstraction has 875 states and 1245 transitions. [2024-11-13 14:33:44,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:33:44,669 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1245 transitions. [2024-11-13 14:33:44,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 14:33:44,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:33:44,670 INFO L215 NwaCegarLoop]: trace histogram [14, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:33:44,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-13 14:33:44,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:44,871 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:33:44,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:44,871 INFO L85 PathProgramCache]: Analyzing trace with hash 924754171, now seen corresponding path program 6 times [2024-11-13 14:33:44,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:44,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142662657] [2024-11-13 14:33:44,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:44,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 54 proven. 72 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 14:33:45,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:45,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142662657] [2024-11-13 14:33:45,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142662657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:33:45,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090903829] [2024-11-13 14:33:45,316 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:33:45,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:45,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:33:45,319 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:33:45,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 14:33:45,531 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-13 14:33:45,531 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:33:45,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 14:33:45,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:33:45,808 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 54 proven. 72 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 14:33:45,808 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:33:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 54 proven. 72 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 14:33:46,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090903829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:33:46,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:33:46,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 47 [2024-11-13 14:33:46,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736981546] [2024-11-13 14:33:46,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:33:46,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-13 14:33:46,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:33:46,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-13 14:33:46,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=1810, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 14:33:46,781 INFO L87 Difference]: Start difference. First operand 875 states and 1245 transitions. Second operand has 47 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 47 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:33:57,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:33:57,010 INFO L93 Difference]: Finished difference Result 2019 states and 2413 transitions. [2024-11-13 14:33:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2024-11-13 14:33:57,011 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 47 states have internal predecessors, (63), 0 states have call successors, (0), 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 14:33:57,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:33:57,017 INFO L225 Difference]: With dead ends: 2019 [2024-11-13 14:33:57,017 INFO L226 Difference]: Without dead ends: 1959 [2024-11-13 14:33:57,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2077 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1674, Invalid=6516, Unknown=0, NotChecked=0, Total=8190 [2024-11-13 14:33:57,018 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 275 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:33:57,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 198 Invalid, 808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:33:57,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2024-11-13 14:33:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 877. [2024-11-13 14:33:58,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.42351598173516) internal successors, (1247), 876 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:33:58,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1247 transitions. [2024-11-13 14:33:58,731 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1247 transitions. Word has length 40 [2024-11-13 14:33:58,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:33:58,732 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 1247 transitions. [2024-11-13 14:33:58,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 47 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:33:58,732 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1247 transitions. [2024-11-13 14:33:58,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 14:33:58,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:33:58,733 INFO L215 NwaCegarLoop]: trace histogram [12, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:33:58,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-13 14:33:58,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:58,933 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:33:58,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:58,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1665203923, now seen corresponding path program 7 times [2024-11-13 14:33:58,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:33:58,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460773041] [2024-11-13 14:33:58,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:58,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:33:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 30 proven. 90 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-13 14:33:59,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:33:59,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460773041] [2024-11-13 14:33:59,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460773041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:33:59,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655093566] [2024-11-13 14:33:59,379 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:33:59,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:59,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:33:59,381 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:33:59,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-13 14:33:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:59,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-13 14:33:59,457 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:33:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 14:33:59,744 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:34:01,017 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-13 14:34:01,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655093566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:34:01,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:34:01,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 25] total 48 [2024-11-13 14:34:01,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831992755] [2024-11-13 14:34:01,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:34:01,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-13 14:34:01,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:34:01,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-13 14:34:01,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1911, Unknown=0, NotChecked=0, Total=2256 [2024-11-13 14:34:01,018 INFO L87 Difference]: Start difference. First operand 877 states and 1247 transitions. Second operand has 48 states, 48 states have (on average 1.25) internal successors, (60), 48 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 14:35:16,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:35:16,153 INFO L93 Difference]: Finished difference Result 2521 states and 3048 transitions. [2024-11-13 14:35:16,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 276 states. [2024-11-13 14:35:16,154 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.25) internal successors, (60), 48 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 40 [2024-11-13 14:35:16,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:35:16,169 INFO L225 Difference]: With dead ends: 2521 [2024-11-13 14:35:16,169 INFO L226 Difference]: Without dead ends: 2383 [2024-11-13 14:35:16,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 306 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34622 ImplicationChecksByTransitivity, 61.3s TimeCoverageRelationStatistics Valid=10670, Invalid=83886, Unknown=0, NotChecked=0, Total=94556 [2024-11-13 14:35:16,173 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 1131 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 1015 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1015 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:35:16,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 419 Invalid, 3084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1015 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-13 14:35:16,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2383 states. [2024-11-13 14:35:18,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2383 to 871. [2024-11-13 14:35:18,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 870 states have (on average 1.3735632183908046) internal successors, (1195), 870 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:35:18,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1195 transitions. [2024-11-13 14:35:18,258 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1195 transitions. Word has length 40 [2024-11-13 14:35:18,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:35:18,259 INFO L471 AbstractCegarLoop]: Abstraction has 871 states and 1195 transitions. [2024-11-13 14:35:18,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.25) internal successors, (60), 48 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 14:35:18,259 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1195 transitions. [2024-11-13 14:35:18,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 14:35:18,260 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:35:18,260 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:35:18,280 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2024-11-13 14:35:18,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:35:18,461 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:35:18,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:35:18,461 INFO L85 PathProgramCache]: Analyzing trace with hash -97098373, now seen corresponding path program 28 times [2024-11-13 14:35:18,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:35:18,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086541055] [2024-11-13 14:35:18,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:35:18,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:35:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:35:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:35:20,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:35:20,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086541055] [2024-11-13 14:35:20,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086541055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:35:20,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629298639] [2024-11-13 14:35:20,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:35:20,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:35:20,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:35:20,416 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:35:20,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 14:35:20,648 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:35:20,648 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:35:20,651 WARN L253 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 122 conjuncts are in the unsatisfiable core [2024-11-13 14:35:20,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:35:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:35:23,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:35:30,921 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:35:30,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629298639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:35:30,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:35:30,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 38, 38] total 100 [2024-11-13 14:35:30,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630941894] [2024-11-13 14:35:30,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:35:30,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2024-11-13 14:35:30,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:35:30,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2024-11-13 14:35:30,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=9605, Unknown=0, NotChecked=0, Total=9900 [2024-11-13 14:35:30,923 INFO L87 Difference]: Start difference. First operand 871 states and 1195 transitions. Second operand has 100 states, 100 states have (on average 1.2) internal successors, (120), 100 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 14:36:10,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:36:10,652 INFO L93 Difference]: Finished difference Result 932 states and 1265 transitions. [2024-11-13 14:36:10,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2024-11-13 14:36:10,653 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 1.2) internal successors, (120), 100 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 42 [2024-11-13 14:36:10,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:36:10,656 INFO L225 Difference]: With dead ends: 932 [2024-11-13 14:36:10,656 INFO L226 Difference]: Without dead ends: 926 [2024-11-13 14:36:10,658 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4574 ImplicationChecksByTransitivity, 43.9s TimeCoverageRelationStatistics Valid=3052, Invalid=26018, Unknown=0, NotChecked=0, Total=29070 [2024-11-13 14:36:10,658 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 314 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 2804 mSolverCounterSat, 880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 3684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 2804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:36:10,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 421 Invalid, 3684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [880 Valid, 2804 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-13 14:36:10,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2024-11-13 14:36:12,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 890. [2024-11-13 14:36:12,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 890 states, 889 states have (on average 1.3655793025871765) internal successors, (1214), 889 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:36:12,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1214 transitions. [2024-11-13 14:36:12,221 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1214 transitions. Word has length 42 [2024-11-13 14:36:12,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:36:12,222 INFO L471 AbstractCegarLoop]: Abstraction has 890 states and 1214 transitions. [2024-11-13 14:36:12,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 1.2) internal successors, (120), 100 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 14:36:12,222 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1214 transitions. [2024-11-13 14:36:12,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 14:36:12,223 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:36:12,223 INFO L215 NwaCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:36:12,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2024-11-13 14:36:12,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:36:12,423 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:36:12,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:36:12,423 INFO L85 PathProgramCache]: Analyzing trace with hash 824505545, now seen corresponding path program 29 times [2024-11-13 14:36:12,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:36:12,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328700199] [2024-11-13 14:36:12,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:36:12,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:36:12,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:36:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 436 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:36:13,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:36:13,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328700199] [2024-11-13 14:36:13,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328700199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:36:13,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939876612] [2024-11-13 14:36:13,304 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:36:13,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:36:13,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:36:13,308 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:36:13,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_46183749-34bd-48a0-b606-44002ae6bb55/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-11-13 14:36:13,502 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2024-11-13 14:36:13,503 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:36:13,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-13 14:36:13,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:36:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 436 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:36:13,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:36:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 436 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:36:15,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939876612] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:36:15,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:36:15,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 67 [2024-11-13 14:36:15,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313131359] [2024-11-13 14:36:15,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:36:15,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2024-11-13 14:36:15,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:36:15,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2024-11-13 14:36:15,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=3385, Unknown=0, NotChecked=0, Total=4422 [2024-11-13 14:36:15,912 INFO L87 Difference]: Start difference. First operand 890 states and 1214 transitions. Second operand has 67 states, 67 states have (on average 1.164179104477612) internal successors, (78), 67 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 14:36:39,968 WARN L286 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 128 DAG size of output: 127 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)