./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label43.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_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/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_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label43.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/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_181fdbdc-545b-49b7-b5c5-e967a13f451e/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 35560e922bf8333807d0348ddb335d0f345175bbe017d76c2c9d638827ad9537 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:16:00,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:16:00,493 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:16:00,504 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:16:00,505 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:16:00,542 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:16:00,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:16:00,543 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:16:00,543 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:16:00,543 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:16:00,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:16:00,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:16:00,544 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:16:00,544 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:16:00,544 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:16:00,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:16:00,544 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:16:00,545 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:16:00,545 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:16:00,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:16:00,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:16:00,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:16:00,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:16:00,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:16:00,545 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:16:00,546 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:16:00,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:16:00,546 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:16:00,546 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:16:00,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:16:00,546 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:16:00,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:16:00,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:16:00,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:16:00,547 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:16:00,547 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:16:00,547 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:16:00,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:16:00,547 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:16:00,548 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:16:00,548 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:16:00,548 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:16:00,548 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_181fdbdc-545b-49b7-b5c5-e967a13f451e/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 -> 35560e922bf8333807d0348ddb335d0f345175bbe017d76c2c9d638827ad9537 [2024-11-13 14:16:00,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:16:00,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:16:00,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:16:00,992 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:16:00,992 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:16:00,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem13_label43.c Unable to find full path for "g++" [2024-11-13 14:16:03,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:16:04,067 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:16:04,070 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/sv-benchmarks/c/eca-rers2012/Problem13_label43.c [2024-11-13 14:16:04,117 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/data/4bdfc2294/b5dc5a78bb714808ae512c47cf062692/FLAG38df86724 [2024-11-13 14:16:04,144 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/data/4bdfc2294/b5dc5a78bb714808ae512c47cf062692 [2024-11-13 14:16:04,147 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:16:04,150 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:16:04,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:16:04,155 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:16:04,161 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:16:04,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:16:04" (1/1) ... [2024-11-13 14:16:04,165 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a8e3bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:04, skipping insertion in model container [2024-11-13 14:16:04,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:16:04" (1/1) ... [2024-11-13 14:16:04,329 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:16:04,642 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_181fdbdc-545b-49b7-b5c5-e967a13f451e/sv-benchmarks/c/eca-rers2012/Problem13_label43.c[2870,2883] [2024-11-13 14:16:05,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:16:05,951 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:16:05,979 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_181fdbdc-545b-49b7-b5c5-e967a13f451e/sv-benchmarks/c/eca-rers2012/Problem13_label43.c[2870,2883] [2024-11-13 14:16:06,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:16:06,783 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:16:06,784 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:06 WrapperNode [2024-11-13 14:16:06,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:16:06,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:16:06,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:16:06,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:16:06,795 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:06" (1/1) ... [2024-11-13 14:16:06,881 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:06" (1/1) ... [2024-11-13 14:16:07,747 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-13 14:16:07,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:16:07,749 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:16:07,749 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:16:07,749 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:16:07,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:06" (1/1) ... [2024-11-13 14:16:07,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:06" (1/1) ... [2024-11-13 14:16:07,847 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:06" (1/1) ... [2024-11-13 14:16:08,185 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 14:16:08,186 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:06" (1/1) ... [2024-11-13 14:16:08,186 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:06" (1/1) ... [2024-11-13 14:16:08,469 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:06" (1/1) ... [2024-11-13 14:16:08,525 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:06" (1/1) ... [2024-11-13 14:16:08,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:06" (1/1) ... [2024-11-13 14:16:08,629 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:06" (1/1) ... [2024-11-13 14:16:08,752 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:16:08,753 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:16:08,754 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:16:08,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:16:08,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:06" (1/1) ... [2024-11-13 14:16:08,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:16:08,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:08,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:16:08,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:16:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:16:08,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:16:08,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:16:08,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:16:08,947 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:16:08,949 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:16:17,394 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-13 14:16:17,394 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:16:17,455 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:16:17,455 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 14:16:17,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:16:17 BoogieIcfgContainer [2024-11-13 14:16:17,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:16:17,461 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:16:17,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:16:17,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:16:17,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:16:04" (1/3) ... [2024-11-13 14:16:17,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1122aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:16:17, skipping insertion in model container [2024-11-13 14:16:17,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:16:06" (2/3) ... [2024-11-13 14:16:17,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1122aba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:16:17, skipping insertion in model container [2024-11-13 14:16:17,473 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:16:17" (3/3) ... [2024-11-13 14:16:17,475 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label43.c [2024-11-13 14:16:17,498 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:16:17,501 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label43.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 14:16:17,616 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:16:17,630 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;@22c10c15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:16:17,630 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:16:17,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:17,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 14:16:17,646 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:17,647 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:16:17,647 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:17,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:17,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1381188922, now seen corresponding path program 1 times [2024-11-13 14:16:17,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:17,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242279801] [2024-11-13 14:16:17,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:17,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:17,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:18,054 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 14:16:18,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:18,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242279801] [2024-11-13 14:16:18,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242279801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:18,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:18,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:16:18,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700117573] [2024-11-13 14:16:18,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:18,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:16:18,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:18,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:16:18,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:16:18,105 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 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 14:16:25,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:25,379 INFO L93 Difference]: Finished difference Result 3035 states and 5643 transitions. [2024-11-13 14:16:25,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:16:25,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 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 18 [2024-11-13 14:16:25,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:25,426 INFO L225 Difference]: With dead ends: 3035 [2024-11-13 14:16:25,429 INFO L226 Difference]: Without dead ends: 1873 [2024-11-13 14:16:25,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:16:25,447 INFO L432 NwaCegarLoop]: 989 mSDtfsCounter, 887 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1143 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:25,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1143 Invalid, 3363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [858 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-13 14:16:25,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2024-11-13 14:16:25,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1859. [2024-11-13 14:16:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 1.5441334768568353) internal successors, (2869), 1858 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:25,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2869 transitions. [2024-11-13 14:16:25,637 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2869 transitions. Word has length 18 [2024-11-13 14:16:25,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:25,638 INFO L471 AbstractCegarLoop]: Abstraction has 1859 states and 2869 transitions. [2024-11-13 14:16:25,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 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 14:16:25,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2869 transitions. [2024-11-13 14:16:25,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-13 14:16:25,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:25,644 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:16:25,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:16:25,646 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:25,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:25,647 INFO L85 PathProgramCache]: Analyzing trace with hash -699253531, now seen corresponding path program 1 times [2024-11-13 14:16:25,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:25,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622700264] [2024-11-13 14:16:25,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:25,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:26,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:26,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622700264] [2024-11-13 14:16:26,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622700264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:26,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:26,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:16:26,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262556924] [2024-11-13 14:16:26,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:26,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:16:26,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:26,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:16:26,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:16:26,141 INFO L87 Difference]: Start difference. First operand 1859 states and 2869 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:28,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:16:36,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:16:36,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:36,645 INFO L93 Difference]: Finished difference Result 5405 states and 8404 transitions. [2024-11-13 14:16:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:16:36,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-11-13 14:16:36,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:36,666 INFO L225 Difference]: With dead ends: 5405 [2024-11-13 14:16:36,666 INFO L226 Difference]: Without dead ends: 3548 [2024-11-13 14:16:36,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:16:36,671 INFO L432 NwaCegarLoop]: 905 mSDtfsCounter, 863 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 3343 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 3785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 3343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:36,671 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1038 Invalid, 3785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [442 Valid, 3343 Invalid, 0 Unknown, 0 Unchecked, 10.3s Time] [2024-11-13 14:16:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3548 states. [2024-11-13 14:16:36,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3548 to 3476. [2024-11-13 14:16:36,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 3475 states have (on average 1.4900719424460431) internal successors, (5178), 3475 states have internal predecessors, (5178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:36,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 5178 transitions. [2024-11-13 14:16:36,777 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 5178 transitions. Word has length 90 [2024-11-13 14:16:36,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:36,777 INFO L471 AbstractCegarLoop]: Abstraction has 3476 states and 5178 transitions. [2024-11-13 14:16:36,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:36,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 5178 transitions. [2024-11-13 14:16:36,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-13 14:16:36,781 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:36,781 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:16:36,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:16:36,782 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:36,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:36,782 INFO L85 PathProgramCache]: Analyzing trace with hash -617825004, now seen corresponding path program 1 times [2024-11-13 14:16:36,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:36,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874990455] [2024-11-13 14:16:36,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:36,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:36,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:37,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:37,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874990455] [2024-11-13 14:16:37,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874990455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:37,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:37,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:16:37,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184425441] [2024-11-13 14:16:37,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:37,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:16:37,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:16:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:16:37,835 INFO L87 Difference]: Start difference. First operand 3476 states and 5178 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:47,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:47,685 INFO L93 Difference]: Finished difference Result 9350 states and 13619 transitions. [2024-11-13 14:16:47,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:16:47,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-13 14:16:47,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:47,719 INFO L225 Difference]: With dead ends: 9350 [2024-11-13 14:16:47,720 INFO L226 Difference]: Without dead ends: 5876 [2024-11-13 14:16:47,730 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 14:16:47,733 INFO L432 NwaCegarLoop]: 1097 mSDtfsCounter, 2263 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 5762 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2263 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 6253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 5762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:47,736 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2263 Valid, 1364 Invalid, 6253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [491 Valid, 5762 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2024-11-13 14:16:47,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5876 states. [2024-11-13 14:16:47,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5876 to 5849. [2024-11-13 14:16:47,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5849 states, 5848 states have (on average 1.3341313269493844) internal successors, (7802), 5848 states have internal predecessors, (7802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:47,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5849 states to 5849 states and 7802 transitions. [2024-11-13 14:16:47,939 INFO L78 Accepts]: Start accepts. Automaton has 5849 states and 7802 transitions. Word has length 104 [2024-11-13 14:16:47,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:47,940 INFO L471 AbstractCegarLoop]: Abstraction has 5849 states and 7802 transitions. [2024-11-13 14:16:47,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:47,944 INFO L276 IsEmpty]: Start isEmpty. Operand 5849 states and 7802 transitions. [2024-11-13 14:16:47,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-13 14:16:47,946 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:47,946 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:16:47,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:16:47,947 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:47,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:47,950 INFO L85 PathProgramCache]: Analyzing trace with hash -102388773, now seen corresponding path program 1 times [2024-11-13 14:16:47,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:47,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961822279] [2024-11-13 14:16:47,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:47,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:48,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:48,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961822279] [2024-11-13 14:16:48,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961822279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:16:48,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278916665] [2024-11-13 14:16:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:48,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:48,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:48,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:16:48,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:16:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:48,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:16:48,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:16:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:16:49,120 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:16:49,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278916665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:49,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:16:49,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-13 14:16:49,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035209901] [2024-11-13 14:16:49,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:49,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:16:49,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:49,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:16:49,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:16:49,127 INFO L87 Difference]: Start difference. First operand 5849 states and 7802 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:55,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:16:55,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:55,567 INFO L93 Difference]: Finished difference Result 14213 states and 19759 transitions. [2024-11-13 14:16:55,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:16:55,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2024-11-13 14:16:55,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:55,605 INFO L225 Difference]: With dead ends: 14213 [2024-11-13 14:16:55,606 INFO L226 Difference]: Without dead ends: 9153 [2024-11-13 14:16:55,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:16:55,614 INFO L432 NwaCegarLoop]: 721 mSDtfsCounter, 1053 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 2633 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:55,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 942 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 2633 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-13 14:16:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9153 states. [2024-11-13 14:16:55,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9153 to 9131. [2024-11-13 14:16:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9131 states, 9130 states have (on average 1.3122672508214677) internal successors, (11981), 9130 states have internal predecessors, (11981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:55,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9131 states to 9131 states and 11981 transitions. [2024-11-13 14:16:55,831 INFO L78 Accepts]: Start accepts. Automaton has 9131 states and 11981 transitions. Word has length 114 [2024-11-13 14:16:55,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:55,832 INFO L471 AbstractCegarLoop]: Abstraction has 9131 states and 11981 transitions. [2024-11-13 14:16:55,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:16:55,833 INFO L276 IsEmpty]: Start isEmpty. Operand 9131 states and 11981 transitions. [2024-11-13 14:16:55,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-13 14:16:55,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:55,842 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:16:55,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:16:56,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:56,048 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:56,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:56,048 INFO L85 PathProgramCache]: Analyzing trace with hash 975764913, now seen corresponding path program 1 times [2024-11-13 14:16:56,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:56,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068339] [2024-11-13 14:16:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:56,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:56,394 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-13 14:16:56,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:56,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068339] [2024-11-13 14:16:56,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:56,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:56,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:16:56,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42479765] [2024-11-13 14:16:56,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:56,397 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:16:56,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:56,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:16:56,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:16:56,398 INFO L87 Difference]: Start difference. First operand 9131 states and 11981 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:02,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:17:02,020 INFO L93 Difference]: Finished difference Result 24616 states and 32951 transitions. [2024-11-13 14:17:02,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:17:02,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2024-11-13 14:17:02,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:17:02,064 INFO L225 Difference]: With dead ends: 24616 [2024-11-13 14:17:02,064 INFO L226 Difference]: Without dead ends: 16274 [2024-11-13 14:17:02,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:17:02,074 INFO L432 NwaCegarLoop]: 841 mSDtfsCounter, 910 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 2580 mSolverCounterSat, 752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 3332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 752 IncrementalHoareTripleChecker+Valid, 2580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:17:02,075 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 977 Invalid, 3332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [752 Valid, 2580 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-13 14:17:02,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16274 states. [2024-11-13 14:17:02,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16274 to 16260. [2024-11-13 14:17:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16260 states, 16259 states have (on average 1.2505689156774709) internal successors, (20333), 16259 states have internal predecessors, (20333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:02,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16260 states to 16260 states and 20333 transitions. [2024-11-13 14:17:02,368 INFO L78 Accepts]: Start accepts. Automaton has 16260 states and 20333 transitions. Word has length 185 [2024-11-13 14:17:02,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:17:02,369 INFO L471 AbstractCegarLoop]: Abstraction has 16260 states and 20333 transitions. [2024-11-13 14:17:02,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:02,369 INFO L276 IsEmpty]: Start isEmpty. Operand 16260 states and 20333 transitions. [2024-11-13 14:17:02,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-13 14:17:02,375 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:17:02,376 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:02,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:17:02,376 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:17:02,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:02,377 INFO L85 PathProgramCache]: Analyzing trace with hash -995948274, now seen corresponding path program 1 times [2024-11-13 14:17:02,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:02,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906670145] [2024-11-13 14:17:02,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:02,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-13 14:17:02,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:02,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906670145] [2024-11-13 14:17:02,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906670145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:02,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:02,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:17:02,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448911547] [2024-11-13 14:17:02,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:02,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:17:02,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:02,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:17:02,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:17:02,682 INFO L87 Difference]: Start difference. First operand 16260 states and 20333 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:07,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:17:07,521 INFO L93 Difference]: Finished difference Result 45114 states and 56995 transitions. [2024-11-13 14:17:07,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:17:07,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2024-11-13 14:17:07,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:17:07,594 INFO L225 Difference]: With dead ends: 45114 [2024-11-13 14:17:07,595 INFO L226 Difference]: Without dead ends: 29643 [2024-11-13 14:17:07,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:17:07,615 INFO L432 NwaCegarLoop]: 850 mSDtfsCounter, 887 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 874 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 3183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:17:07,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 1002 Invalid, 3183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [874 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 14:17:07,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29643 states. [2024-11-13 14:17:08,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29643 to 28062. [2024-11-13 14:17:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28062 states, 28061 states have (on average 1.184918570257653) internal successors, (33250), 28061 states have internal predecessors, (33250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:08,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28062 states to 28062 states and 33250 transitions. [2024-11-13 14:17:08,201 INFO L78 Accepts]: Start accepts. Automaton has 28062 states and 33250 transitions. Word has length 199 [2024-11-13 14:17:08,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:17:08,202 INFO L471 AbstractCegarLoop]: Abstraction has 28062 states and 33250 transitions. [2024-11-13 14:17:08,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:08,203 INFO L276 IsEmpty]: Start isEmpty. Operand 28062 states and 33250 transitions. [2024-11-13 14:17:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2024-11-13 14:17:08,206 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:17:08,207 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:08,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:17:08,207 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:17:08,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:08,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1043823713, now seen corresponding path program 1 times [2024-11-13 14:17:08,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:08,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700508533] [2024-11-13 14:17:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:08,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:08,469 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:08,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:08,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700508533] [2024-11-13 14:17:08,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700508533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:08,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:08,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:17:08,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032896234] [2024-11-13 14:17:08,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:08,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:17:08,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:08,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:17:08,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:17:08,472 INFO L87 Difference]: Start difference. First operand 28062 states and 33250 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:13,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:17:13,344 INFO L93 Difference]: Finished difference Result 67151 states and 81177 transitions. [2024-11-13 14:17:13,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:17:13,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 217 [2024-11-13 14:17:13,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:17:13,430 INFO L225 Difference]: With dead ends: 67151 [2024-11-13 14:17:13,430 INFO L226 Difference]: Without dead ends: 39878 [2024-11-13 14:17:13,448 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 14:17:13,449 INFO L432 NwaCegarLoop]: 824 mSDtfsCounter, 861 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 3305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 915 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:17:13,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 943 Invalid, 3305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [915 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-13 14:17:13,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39878 states. [2024-11-13 14:17:13,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39878 to 39080. [2024-11-13 14:17:13,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39080 states, 39079 states have (on average 1.1721128995112464) internal successors, (45805), 39079 states have internal predecessors, (45805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:13,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39080 states to 39080 states and 45805 transitions. [2024-11-13 14:17:13,951 INFO L78 Accepts]: Start accepts. Automaton has 39080 states and 45805 transitions. Word has length 217 [2024-11-13 14:17:13,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:17:13,952 INFO L471 AbstractCegarLoop]: Abstraction has 39080 states and 45805 transitions. [2024-11-13 14:17:13,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 39080 states and 45805 transitions. [2024-11-13 14:17:13,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2024-11-13 14:17:13,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:17:13,962 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:13,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:17:13,962 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:17:13,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:13,963 INFO L85 PathProgramCache]: Analyzing trace with hash -381552837, now seen corresponding path program 1 times [2024-11-13 14:17:13,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:13,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632359938] [2024-11-13 14:17:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:13,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:14,184 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:17:14,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:14,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632359938] [2024-11-13 14:17:14,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632359938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:14,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:14,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:17:14,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768758096] [2024-11-13 14:17:14,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:14,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:17:14,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:14,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:17:14,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:17:14,188 INFO L87 Difference]: Start difference. First operand 39080 states and 45805 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:19,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:17:19,249 INFO L93 Difference]: Finished difference Result 77220 states and 90609 transitions. [2024-11-13 14:17:19,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:17:19,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 232 [2024-11-13 14:17:19,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:17:19,310 INFO L225 Difference]: With dead ends: 77220 [2024-11-13 14:17:19,310 INFO L226 Difference]: Without dead ends: 38929 [2024-11-13 14:17:19,336 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 14:17:19,337 INFO L432 NwaCegarLoop]: 1503 mSDtfsCounter, 1036 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 2350 mSolverCounterSat, 602 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 2952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 2350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:17:19,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 1640 Invalid, 2952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [602 Valid, 2350 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 14:17:19,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38929 states. [2024-11-13 14:17:19,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38929 to 36561. [2024-11-13 14:17:19,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36561 states, 36560 states have (on average 1.12554704595186) internal successors, (41150), 36560 states have internal predecessors, (41150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36561 states to 36561 states and 41150 transitions. [2024-11-13 14:17:19,970 INFO L78 Accepts]: Start accepts. Automaton has 36561 states and 41150 transitions. Word has length 232 [2024-11-13 14:17:19,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:17:19,970 INFO L471 AbstractCegarLoop]: Abstraction has 36561 states and 41150 transitions. [2024-11-13 14:17:19,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:19,971 INFO L276 IsEmpty]: Start isEmpty. Operand 36561 states and 41150 transitions. [2024-11-13 14:17:19,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2024-11-13 14:17:19,976 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:17:19,976 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:19,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:17:19,977 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:17:19,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:19,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1788283542, now seen corresponding path program 1 times [2024-11-13 14:17:19,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:19,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914902462] [2024-11-13 14:17:19,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:19,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:20,353 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:17:20,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:20,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914902462] [2024-11-13 14:17:20,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914902462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:20,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:20,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:17:20,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636220887] [2024-11-13 14:17:20,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:20,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:17:20,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:20,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:17:20,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:17:20,356 INFO L87 Difference]: Start difference. First operand 36561 states and 41150 transitions. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:31,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:17:31,006 INFO L93 Difference]: Finished difference Result 105584 states and 119185 transitions. [2024-11-13 14:17:31,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:17:31,007 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 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 301 [2024-11-13 14:17:31,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:17:31,093 INFO L225 Difference]: With dead ends: 105584 [2024-11-13 14:17:31,093 INFO L226 Difference]: Without dead ends: 69812 [2024-11-13 14:17:31,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:17:31,117 INFO L432 NwaCegarLoop]: 569 mSDtfsCounter, 1703 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 6631 mSolverCounterSat, 1039 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 7670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1039 IncrementalHoareTripleChecker+Valid, 6631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:17:31,118 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 808 Invalid, 7670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1039 Valid, 6631 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2024-11-13 14:17:31,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69812 states. [2024-11-13 14:17:32,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69812 to 67333. [2024-11-13 14:17:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67333 states, 67332 states have (on average 1.1180270896453395) internal successors, (75279), 67332 states have internal predecessors, (75279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67333 states to 67333 states and 75279 transitions. [2024-11-13 14:17:32,400 INFO L78 Accepts]: Start accepts. Automaton has 67333 states and 75279 transitions. Word has length 301 [2024-11-13 14:17:32,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:17:32,400 INFO L471 AbstractCegarLoop]: Abstraction has 67333 states and 75279 transitions. [2024-11-13 14:17:32,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:32,401 INFO L276 IsEmpty]: Start isEmpty. Operand 67333 states and 75279 transitions. [2024-11-13 14:17:32,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-11-13 14:17:32,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:17:32,409 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:32,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:17:32,409 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:17:32,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:32,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1214684403, now seen corresponding path program 1 times [2024-11-13 14:17:32,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:32,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740678995] [2024-11-13 14:17:32,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:32,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 333 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:17:33,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:33,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740678995] [2024-11-13 14:17:33,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740678995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:33,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:33,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:17:33,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570488929] [2024-11-13 14:17:33,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:33,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:17:33,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:33,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:17:33,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:17:33,341 INFO L87 Difference]: Start difference. First operand 67333 states and 75279 transitions. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:41,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:17:41,114 INFO L93 Difference]: Finished difference Result 135474 states and 151391 transitions. [2024-11-13 14:17:41,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:17:41,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 344 [2024-11-13 14:17:41,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:17:41,183 INFO L225 Difference]: With dead ends: 135474 [2024-11-13 14:17:41,183 INFO L226 Difference]: Without dead ends: 68139 [2024-11-13 14:17:41,211 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:17:41,211 INFO L432 NwaCegarLoop]: 874 mSDtfsCounter, 1620 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4305 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 4998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 4305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:17:41,212 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 1020 Invalid, 4998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 4305 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-13 14:17:41,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68139 states. [2024-11-13 14:17:41,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68139 to 67329. [2024-11-13 14:17:42,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67329 states, 67328 states have (on average 1.111187024714829) internal successors, (74814), 67328 states have internal predecessors, (74814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67329 states to 67329 states and 74814 transitions. [2024-11-13 14:17:42,099 INFO L78 Accepts]: Start accepts. Automaton has 67329 states and 74814 transitions. Word has length 344 [2024-11-13 14:17:42,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:17:42,100 INFO L471 AbstractCegarLoop]: Abstraction has 67329 states and 74814 transitions. [2024-11-13 14:17:42,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:42,100 INFO L276 IsEmpty]: Start isEmpty. Operand 67329 states and 74814 transitions. [2024-11-13 14:17:42,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2024-11-13 14:17:42,104 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:17:42,104 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:42,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:17:42,104 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:17:42,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:42,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2146543529, now seen corresponding path program 1 times [2024-11-13 14:17:42,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:42,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267516114] [2024-11-13 14:17:42,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:42,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2024-11-13 14:17:42,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:42,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267516114] [2024-11-13 14:17:42,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267516114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:42,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:17:42,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:17:42,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002552301] [2024-11-13 14:17:42,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:42,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:17:42,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:42,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:17:42,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:17:42,860 INFO L87 Difference]: Start difference. First operand 67329 states and 74814 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:49,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:17:49,646 INFO L93 Difference]: Finished difference Result 169475 states and 189297 transitions. [2024-11-13 14:17:49,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:17:49,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2024-11-13 14:17:49,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:17:49,760 INFO L225 Difference]: With dead ends: 169475 [2024-11-13 14:17:49,761 INFO L226 Difference]: Without dead ends: 102147 [2024-11-13 14:17:49,788 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 14:17:49,788 INFO L432 NwaCegarLoop]: 615 mSDtfsCounter, 1012 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2994 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 3698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 2994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:17:49,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 698 Invalid, 3698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 2994 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-13 14:17:49,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102147 states. [2024-11-13 14:17:50,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102147 to 82338. [2024-11-13 14:17:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82338 states, 82337 states have (on average 1.1162417868030168) internal successors, (91908), 82337 states have internal predecessors, (91908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:51,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82338 states to 82338 states and 91908 transitions. [2024-11-13 14:17:51,152 INFO L78 Accepts]: Start accepts. Automaton has 82338 states and 91908 transitions. Word has length 347 [2024-11-13 14:17:51,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:17:51,152 INFO L471 AbstractCegarLoop]: Abstraction has 82338 states and 91908 transitions. [2024-11-13 14:17:51,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:51,153 INFO L276 IsEmpty]: Start isEmpty. Operand 82338 states and 91908 transitions. [2024-11-13 14:17:51,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-11-13 14:17:51,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:17:51,163 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:17:51,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:17:51,163 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:17:51,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:17:51,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1960208074, now seen corresponding path program 1 times [2024-11-13 14:17:51,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:17:51,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307617642] [2024-11-13 14:17:51,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:51,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:17:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 257 proven. 110 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:17:53,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:17:53,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307617642] [2024-11-13 14:17:53,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307617642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:17:53,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558619042] [2024-11-13 14:17:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:17:53,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:17:53,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:17:53,150 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:17:53,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:17:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:17:53,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:17:53,389 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:17:53,465 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2024-11-13 14:17:53,465 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:17:53,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [558619042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:17:53,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:17:53,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-13 14:17:53,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349170229] [2024-11-13 14:17:53,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:17:53,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:17:53,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:17:53,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:17:53,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:17:53,467 INFO L87 Difference]: Start difference. First operand 82338 states and 91908 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:17:58,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:17:58,848 INFO L93 Difference]: Finished difference Result 180404 states and 200777 transitions. [2024-11-13 14:17:58,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:17:58,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2024-11-13 14:17:58,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:17:58,934 INFO L225 Difference]: With dead ends: 180404 [2024-11-13 14:17:58,934 INFO L226 Difference]: Without dead ends: 91739 [2024-11-13 14:17:58,967 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:17:58,968 INFO L432 NwaCegarLoop]: 1719 mSDtfsCounter, 872 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 2835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:17:58,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1848 Invalid, 2835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 14:17:59,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91739 states. [2024-11-13 14:18:00,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91739 to 88588. [2024-11-13 14:18:00,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88588 states, 88587 states have (on average 1.1030963911183356) internal successors, (97720), 88587 states have internal predecessors, (97720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:00,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88588 states to 88588 states and 97720 transitions. [2024-11-13 14:18:00,175 INFO L78 Accepts]: Start accepts. Automaton has 88588 states and 97720 transitions. Word has length 373 [2024-11-13 14:18:00,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:18:00,176 INFO L471 AbstractCegarLoop]: Abstraction has 88588 states and 97720 transitions. [2024-11-13 14:18:00,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:00,176 INFO L276 IsEmpty]: Start isEmpty. Operand 88588 states and 97720 transitions. [2024-11-13 14:18:00,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2024-11-13 14:18:00,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:18:00,184 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:18:00,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:18:00,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 14:18:00,385 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:18:00,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:18:00,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1919027845, now seen corresponding path program 1 times [2024-11-13 14:18:00,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:18:00,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910785296] [2024-11-13 14:18:00,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:18:00,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:18:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:18:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 553 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2024-11-13 14:18:00,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:18:00,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910785296] [2024-11-13 14:18:00,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910785296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:18:00,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:18:00,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:18:00,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249869371] [2024-11-13 14:18:00,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:18:00,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:18:00,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:18:00,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:18:00,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:18:00,842 INFO L87 Difference]: Start difference. First operand 88588 states and 97720 transitions. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:18:06,522 INFO L93 Difference]: Finished difference Result 176387 states and 194650 transitions. [2024-11-13 14:18:06,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:18:06,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 417 [2024-11-13 14:18:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:18:06,625 INFO L225 Difference]: With dead ends: 176387 [2024-11-13 14:18:06,625 INFO L226 Difference]: Without dead ends: 88588 [2024-11-13 14:18:06,661 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 14:18:06,662 INFO L432 NwaCegarLoop]: 1316 mSDtfsCounter, 876 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2416 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 2978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 2416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:18:06,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [876 Valid, 1396 Invalid, 2978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 2416 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-13 14:18:06,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88588 states. [2024-11-13 14:18:08,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88588 to 88578. [2024-11-13 14:18:08,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88578 states, 88577 states have (on average 1.0848978854555924) internal successors, (96097), 88577 states have internal predecessors, (96097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:08,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88578 states to 88578 states and 96097 transitions. [2024-11-13 14:18:08,172 INFO L78 Accepts]: Start accepts. Automaton has 88578 states and 96097 transitions. Word has length 417 [2024-11-13 14:18:08,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:18:08,173 INFO L471 AbstractCegarLoop]: Abstraction has 88578 states and 96097 transitions. [2024-11-13 14:18:08,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:08,173 INFO L276 IsEmpty]: Start isEmpty. Operand 88578 states and 96097 transitions. [2024-11-13 14:18:08,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-11-13 14:18:08,177 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:18:08,178 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:18:08,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:18:08,178 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:18:08,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:18:08,179 INFO L85 PathProgramCache]: Analyzing trace with hash 221656261, now seen corresponding path program 1 times [2024-11-13 14:18:08,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:18:08,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832274741] [2024-11-13 14:18:08,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:18:08,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:18:08,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:18:10,054 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 400 proven. 110 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2024-11-13 14:18:10,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:18:10,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832274741] [2024-11-13 14:18:10,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832274741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:18:10,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831979942] [2024-11-13 14:18:10,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:18:10,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:18:10,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:18:10,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:18:10,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:18:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:18:10,317 INFO L255 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:18:10,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:18:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2024-11-13 14:18:10,719 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:18:10,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831979942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:18:10,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:18:10,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-13 14:18:10,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053697066] [2024-11-13 14:18:10,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:18:10,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:18:10,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:18:10,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:18:10,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:18:10,723 INFO L87 Difference]: Start difference. First operand 88578 states and 96097 transitions. Second operand has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:15,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:18:15,876 INFO L93 Difference]: Finished difference Result 176366 states and 191400 transitions. [2024-11-13 14:18:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:18:15,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 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 443 [2024-11-13 14:18:15,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:18:16,018 INFO L225 Difference]: With dead ends: 176366 [2024-11-13 14:18:16,018 INFO L226 Difference]: Without dead ends: 88577 [2024-11-13 14:18:16,066 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 442 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:18:16,067 INFO L432 NwaCegarLoop]: 1304 mSDtfsCounter, 1085 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 2783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:18:16,067 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 1373 Invalid, 2783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-13 14:18:16,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88577 states. [2024-11-13 14:18:16,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88577 to 88575. [2024-11-13 14:18:17,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88575 states, 88574 states have (on average 1.0671641791044777) internal successors, (94523), 88574 states have internal predecessors, (94523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:17,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88575 states to 88575 states and 94523 transitions. [2024-11-13 14:18:17,114 INFO L78 Accepts]: Start accepts. Automaton has 88575 states and 94523 transitions. Word has length 443 [2024-11-13 14:18:17,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:18:17,115 INFO L471 AbstractCegarLoop]: Abstraction has 88575 states and 94523 transitions. [2024-11-13 14:18:17,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:17,116 INFO L276 IsEmpty]: Start isEmpty. Operand 88575 states and 94523 transitions. [2024-11-13 14:18:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2024-11-13 14:18:17,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:18:17,133 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:18:17,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 14:18:17,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 14:18:17,334 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:18:17,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:18:17,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1370964592, now seen corresponding path program 1 times [2024-11-13 14:18:17,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:18:17,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431512713] [2024-11-13 14:18:17,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:18:17,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:18:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:18:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 683 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2024-11-13 14:18:18,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:18:18,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431512713] [2024-11-13 14:18:18,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431512713] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:18:18,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:18:18,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:18:18,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423977047] [2024-11-13 14:18:18,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:18:18,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:18:18,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:18:18,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:18:18,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:18:18,082 INFO L87 Difference]: Start difference. First operand 88575 states and 94523 transitions. Second operand has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:23,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:18:23,965 INFO L93 Difference]: Finished difference Result 204713 states and 219338 transitions. [2024-11-13 14:18:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:18:23,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 552 [2024-11-13 14:18:23,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:18:24,092 INFO L225 Difference]: With dead ends: 204713 [2024-11-13 14:18:24,093 INFO L226 Difference]: Without dead ends: 116927 [2024-11-13 14:18:24,134 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 14:18:24,135 INFO L432 NwaCegarLoop]: 1660 mSDtfsCounter, 781 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2443 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 2872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:18:24,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 1792 Invalid, 2872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2443 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-13 14:18:24,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116927 states. [2024-11-13 14:18:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116927 to 116908. [2024-11-13 14:18:26,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116908 states, 116907 states have (on average 1.0584396143943477) internal successors, (123739), 116907 states have internal predecessors, (123739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:26,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116908 states to 116908 states and 123739 transitions. [2024-11-13 14:18:26,511 INFO L78 Accepts]: Start accepts. Automaton has 116908 states and 123739 transitions. Word has length 552 [2024-11-13 14:18:26,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:18:26,511 INFO L471 AbstractCegarLoop]: Abstraction has 116908 states and 123739 transitions. [2024-11-13 14:18:26,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 116908 states and 123739 transitions. [2024-11-13 14:18:26,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2024-11-13 14:18:26,524 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:18:26,525 INFO L215 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:18:26,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:18:26,526 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:18:26,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:18:26,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1159045054, now seen corresponding path program 1 times [2024-11-13 14:18:26,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:18:26,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013457495] [2024-11-13 14:18:26,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:18:26,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:18:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:18:27,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1222 backedges. 880 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2024-11-13 14:18:27,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:18:27,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013457495] [2024-11-13 14:18:27,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013457495] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:18:27,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:18:27,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:18:27,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877300104] [2024-11-13 14:18:27,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:18:27,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:18:27,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:18:27,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:18:27,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:18:27,284 INFO L87 Difference]: Start difference. First operand 116908 states and 123739 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:34,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:18:34,102 INFO L93 Difference]: Finished difference Result 283439 states and 301296 transitions. [2024-11-13 14:18:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:18:34,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 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 561 [2024-11-13 14:18:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:18:34,281 INFO L225 Difference]: With dead ends: 283439 [2024-11-13 14:18:34,281 INFO L226 Difference]: Without dead ends: 167320 [2024-11-13 14:18:34,338 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 14:18:34,339 INFO L432 NwaCegarLoop]: 591 mSDtfsCounter, 957 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 2423 mSolverCounterSat, 881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 3304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 881 IncrementalHoareTripleChecker+Valid, 2423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:18:34,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 671 Invalid, 3304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [881 Valid, 2423 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-13 14:18:34,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167320 states. [2024-11-13 14:18:36,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167320 to 165739. [2024-11-13 14:18:36,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165739 states, 165738 states have (on average 1.0597629994328397) internal successors, (175643), 165738 states have internal predecessors, (175643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:36,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165739 states to 165739 states and 175643 transitions. [2024-11-13 14:18:36,657 INFO L78 Accepts]: Start accepts. Automaton has 165739 states and 175643 transitions. Word has length 561 [2024-11-13 14:18:36,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:18:36,658 INFO L471 AbstractCegarLoop]: Abstraction has 165739 states and 175643 transitions. [2024-11-13 14:18:36,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:36,658 INFO L276 IsEmpty]: Start isEmpty. Operand 165739 states and 175643 transitions. [2024-11-13 14:18:36,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2024-11-13 14:18:36,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:18:36,684 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:18:36,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:18:36,684 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:18:36,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:18:36,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1326862207, now seen corresponding path program 1 times [2024-11-13 14:18:36,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:18:36,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972045442] [2024-11-13 14:18:36,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:18:36,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:18:36,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:18:37,476 INFO L134 CoverageAnalysis]: Checked inductivity of 580 backedges. 476 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-13 14:18:37,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:18:37,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972045442] [2024-11-13 14:18:37,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972045442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:18:37,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:18:37,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:18:37,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99820459] [2024-11-13 14:18:37,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:18:37,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:18:37,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:18:37,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:18:37,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:18:37,480 INFO L87 Difference]: Start difference. First operand 165739 states and 175643 transitions. Second operand has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:43,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:18:43,496 INFO L93 Difference]: Finished difference Result 361384 states and 384256 transitions. [2024-11-13 14:18:43,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:18:43,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 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 594 [2024-11-13 14:18:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:18:43,728 INFO L225 Difference]: With dead ends: 361384 [2024-11-13 14:18:43,728 INFO L226 Difference]: Without dead ends: 196434 [2024-11-13 14:18:43,800 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 14:18:43,801 INFO L432 NwaCegarLoop]: 634 mSDtfsCounter, 916 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 744 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 744 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:18:43,801 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [916 Valid, 709 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [744 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-13 14:18:43,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196434 states. [2024-11-13 14:18:46,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196434 to 195629. [2024-11-13 14:18:46,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195629 states, 195628 states have (on average 1.0572208477314087) internal successors, (206822), 195628 states have internal predecessors, (206822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:46,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195629 states to 195629 states and 206822 transitions. [2024-11-13 14:18:46,681 INFO L78 Accepts]: Start accepts. Automaton has 195629 states and 206822 transitions. Word has length 594 [2024-11-13 14:18:46,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:18:46,682 INFO L471 AbstractCegarLoop]: Abstraction has 195629 states and 206822 transitions. [2024-11-13 14:18:46,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:46,682 INFO L276 IsEmpty]: Start isEmpty. Operand 195629 states and 206822 transitions. [2024-11-13 14:18:46,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2024-11-13 14:18:46,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:18:46,701 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:18:46,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 14:18:46,702 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:18:46,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:18:46,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1687333451, now seen corresponding path program 1 times [2024-11-13 14:18:46,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:18:46,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323006332] [2024-11-13 14:18:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:18:46,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:18:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:18:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 272 proven. 110 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 14:18:49,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:18:49,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323006332] [2024-11-13 14:18:49,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323006332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:18:49,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358898335] [2024-11-13 14:18:49,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:18:49,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:18:49,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:18:49,278 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:18:49,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:18:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:18:49,582 INFO L255 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:18:49,591 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:18:50,232 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 285 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2024-11-13 14:18:50,232 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:18:50,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358898335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:18:50,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:18:50,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-13 14:18:50,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291555104] [2024-11-13 14:18:50,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:18:50,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:18:50,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:18:50,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:18:50,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:18:50,235 INFO L87 Difference]: Start difference. First operand 195629 states and 206822 transitions. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:56,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:18:56,011 INFO L93 Difference]: Finished difference Result 391998 states and 414413 transitions. [2024-11-13 14:18:56,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:18:56,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 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 601 [2024-11-13 14:18:56,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:18:56,245 INFO L225 Difference]: With dead ends: 391998 [2024-11-13 14:18:56,246 INFO L226 Difference]: Without dead ends: 197158 [2024-11-13 14:18:56,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:18:56,317 INFO L432 NwaCegarLoop]: 295 mSDtfsCounter, 959 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 2217 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 2871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 2217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:18:56,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [959 Valid, 307 Invalid, 2871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 2217 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-13 14:18:56,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197158 states. [2024-11-13 14:18:58,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197158 to 190075. [2024-11-13 14:18:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190075 states, 190074 states have (on average 1.0511327167313782) internal successors, (199793), 190074 states have internal predecessors, (199793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:59,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190075 states to 190075 states and 199793 transitions. [2024-11-13 14:18:59,034 INFO L78 Accepts]: Start accepts. Automaton has 190075 states and 199793 transitions. Word has length 601 [2024-11-13 14:18:59,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:18:59,035 INFO L471 AbstractCegarLoop]: Abstraction has 190075 states and 199793 transitions. [2024-11-13 14:18:59,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:18:59,036 INFO L276 IsEmpty]: Start isEmpty. Operand 190075 states and 199793 transitions. [2024-11-13 14:18:59,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 624 [2024-11-13 14:18:59,050 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:18:59,050 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:18:59,067 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:18:59,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-13 14:18:59,251 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:18:59,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:18:59,251 INFO L85 PathProgramCache]: Analyzing trace with hash -822346364, now seen corresponding path program 1 times [2024-11-13 14:18:59,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:18:59,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626729479] [2024-11-13 14:18:59,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:18:59,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:18:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:00,287 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 542 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2024-11-13 14:19:00,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:00,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626729479] [2024-11-13 14:19:00,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626729479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:00,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:00,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:19:00,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590686436] [2024-11-13 14:19:00,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:00,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:19:00,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:00,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:19:00,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:19:00,291 INFO L87 Difference]: Start difference. First operand 190075 states and 199793 transitions. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:07,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:07,664 INFO L93 Difference]: Finished difference Result 373057 states and 392114 transitions. [2024-11-13 14:19:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:19:07,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 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 623 [2024-11-13 14:19:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:07,864 INFO L225 Difference]: With dead ends: 373057 [2024-11-13 14:19:07,865 INFO L226 Difference]: Without dead ends: 183771 [2024-11-13 14:19:07,931 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 14:19:07,931 INFO L432 NwaCegarLoop]: 1587 mSDtfsCounter, 786 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 376 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:07,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1708 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-13 14:19:08,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183771 states. [2024-11-13 14:19:10,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183771 to 182977. [2024-11-13 14:19:10,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182977 states, 182976 states have (on average 1.0419453917453656) internal successors, (190651), 182976 states have internal predecessors, (190651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:10,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182977 states to 182977 states and 190651 transitions. [2024-11-13 14:19:10,835 INFO L78 Accepts]: Start accepts. Automaton has 182977 states and 190651 transitions. Word has length 623 [2024-11-13 14:19:10,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:10,836 INFO L471 AbstractCegarLoop]: Abstraction has 182977 states and 190651 transitions. [2024-11-13 14:19:10,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:10,837 INFO L276 IsEmpty]: Start isEmpty. Operand 182977 states and 190651 transitions. [2024-11-13 14:19:10,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2024-11-13 14:19:10,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:10,851 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:10,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 14:19:10,852 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:19:10,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:10,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1826574111, now seen corresponding path program 1 times [2024-11-13 14:19:10,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:10,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116306514] [2024-11-13 14:19:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:10,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:10,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1116 backedges. 663 proven. 110 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2024-11-13 14:19:12,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:12,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116306514] [2024-11-13 14:19:12,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116306514] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:12,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141483940] [2024-11-13 14:19:12,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:12,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:12,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:12,952 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:13,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_181fdbdc-545b-49b7-b5c5-e967a13f451e/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:19:13,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:13,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:19:13,585 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:14,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1116 backedges. 660 proven. 0 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2024-11-13 14:19:14,780 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:19:14,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141483940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:14,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:19:14,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-13 14:19:14,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922272535] [2024-11-13 14:19:14,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:14,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:19:14,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:14,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:19:14,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:19:14,784 INFO L87 Difference]: Start difference. First operand 182977 states and 190651 transitions. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 2 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)