./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label41.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_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/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_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label41.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/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_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/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 cd32d11e922bf190beba4edd20222f6e5b4dfc210b3394b8307f2a4d7f2efc9e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:31:41,482 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:31:41,593 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:31:41,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:31:41,603 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:31:41,642 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:31:41,643 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:31:41,643 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:31:41,644 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:31:41,644 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:31:41,644 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:31:41,644 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:31:41,645 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:31:41,645 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:31:41,645 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:31:41,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:31:41,646 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:31:41,646 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:31:41,646 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:31:41,646 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:31:41,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:31:41,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:31:41,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:31:41,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:31:41,647 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:31:41,647 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:31:41,648 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:31:41,648 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:31:41,648 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:31:41,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:31:41,648 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:31:41,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:31:41,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:31:41,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:31:41,649 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:31:41,649 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:31:41,649 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:31:41,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:31:41,650 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:31:41,650 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:31:41,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:31:41,650 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:31:41,650 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_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/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 -> cd32d11e922bf190beba4edd20222f6e5b4dfc210b3394b8307f2a4d7f2efc9e [2024-11-13 13:31:42,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:31:42,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:31:42,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:31:42,043 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:31:42,044 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:31:42,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/eca-rers2012/Problem13_label41.c Unable to find full path for "g++" [2024-11-13 13:31:44,286 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:31:45,052 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:31:45,053 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/sv-benchmarks/c/eca-rers2012/Problem13_label41.c [2024-11-13 13:31:45,101 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/data/18bfe4369/cf7d7f50a24c42a28423ce8a74eaf571/FLAG082cc8493 [2024-11-13 13:31:45,123 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/data/18bfe4369/cf7d7f50a24c42a28423ce8a74eaf571 [2024-11-13 13:31:45,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:31:45,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:31:45,129 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:31:45,129 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:31:45,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:31:45,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:31:45" (1/1) ... [2024-11-13 13:31:45,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25855277 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:45, skipping insertion in model container [2024-11-13 13:31:45,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:31:45" (1/1) ... [2024-11-13 13:31:45,309 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:31:45,647 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_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/sv-benchmarks/c/eca-rers2012/Problem13_label41.c[6347,6360] [2024-11-13 13:31:46,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:31:46,905 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:31:46,945 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_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/sv-benchmarks/c/eca-rers2012/Problem13_label41.c[6347,6360] [2024-11-13 13:31:47,714 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:31:47,750 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:31:47,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:47 WrapperNode [2024-11-13 13:31:47,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:31:47,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:31:47,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:31:47,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:31:47,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:47" (1/1) ... [2024-11-13 13:31:47,832 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:47" (1/1) ... [2024-11-13 13:31:48,711 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5586 [2024-11-13 13:31:48,712 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:31:48,713 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:31:48,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:31:48,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:31:48,726 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:47" (1/1) ... [2024-11-13 13:31:48,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:47" (1/1) ... [2024-11-13 13:31:48,815 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:47" (1/1) ... [2024-11-13 13:31:49,165 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 13:31:49,166 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:47" (1/1) ... [2024-11-13 13:31:49,166 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:47" (1/1) ... [2024-11-13 13:31:49,548 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:47" (1/1) ... [2024-11-13 13:31:49,617 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:47" (1/1) ... [2024-11-13 13:31:49,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:47" (1/1) ... [2024-11-13 13:31:49,674 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:47" (1/1) ... [2024-11-13 13:31:49,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:31:49,780 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:31:49,780 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:31:49,780 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:31:49,782 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:47" (1/1) ... [2024-11-13 13:31:49,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:31:49,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:31:49,832 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:31:49,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:31:49,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:31:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:31:49,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:31:49,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:31:50,017 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:31:50,019 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:31:59,098 INFO L? ?]: Removed 738 outVars from TransFormulas that were not future-live. [2024-11-13 13:31:59,099 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:31:59,159 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:31:59,159 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:31:59,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:59 BoogieIcfgContainer [2024-11-13 13:31:59,160 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:31:59,165 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:31:59,165 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:31:59,171 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:31:59,171 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:31:45" (1/3) ... [2024-11-13 13:31:59,172 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4801859a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:59, skipping insertion in model container [2024-11-13 13:31:59,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:47" (2/3) ... [2024-11-13 13:31:59,173 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4801859a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:59, skipping insertion in model container [2024-11-13 13:31:59,173 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:59" (3/3) ... [2024-11-13 13:31:59,175 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label41.c [2024-11-13 13:31:59,201 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:31:59,204 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem13_label41.c that has 1 procedures, 1098 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 13:31:59,349 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:31:59,369 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;@112cfe58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:31:59,371 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:31:59,387 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 13:31:59,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 13:31:59,398 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:59,399 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:59,400 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:59,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:59,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2072612706, now seen corresponding path program 1 times [2024-11-13 13:31:59,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:59,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910371558] [2024-11-13 13:31:59,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:59,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:59,989 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 13:31:59,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:59,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910371558] [2024-11-13 13:31:59,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910371558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:31:59,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:31:59,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:31:59,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359857848] [2024-11-13 13:31:59,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:31:59,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:00,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:00,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:00,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:00,033 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 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:07,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:07,873 INFO L93 Difference]: Finished difference Result 3121 states and 5804 transitions. [2024-11-13 13:32:07,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:07,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-13 13:32:07,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:07,922 INFO L225 Difference]: With dead ends: 3121 [2024-11-13 13:32:07,922 INFO L226 Difference]: Without dead ends: 1944 [2024-11-13 13:32:07,935 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 13:32:07,942 INFO L432 NwaCegarLoop]: 436 mSDtfsCounter, 945 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 3701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:07,943 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 573 Invalid, 3701 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [577 Valid, 3124 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-13 13:32:07,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2024-11-13 13:32:08,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1873. [2024-11-13 13:32:08,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1873 states, 1872 states have (on average 1.7393162393162394) internal successors, (3256), 1872 states have internal predecessors, (3256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1873 states to 1873 states and 3256 transitions. [2024-11-13 13:32:08,220 INFO L78 Accepts]: Start accepts. Automaton has 1873 states and 3256 transitions. Word has length 44 [2024-11-13 13:32:08,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:08,224 INFO L471 AbstractCegarLoop]: Abstraction has 1873 states and 3256 transitions. [2024-11-13 13:32:08,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:08,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1873 states and 3256 transitions. [2024-11-13 13:32:08,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-13 13:32:08,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:08,235 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 13:32:08,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:32:08,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:08,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1975546825, now seen corresponding path program 1 times [2024-11-13 13:32:08,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:08,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611862138] [2024-11-13 13:32:08,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:08,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:08,855 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:08,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:08,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611862138] [2024-11-13 13:32:08,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611862138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:08,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:08,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:32:08,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175839650] [2024-11-13 13:32:08,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:08,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:08,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:08,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:08,861 INFO L87 Difference]: Start difference. First operand 1873 states and 3256 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:14,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:14,979 INFO L93 Difference]: Finished difference Result 5351 states and 9369 transitions. [2024-11-13 13:32:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:14,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2024-11-13 13:32:14,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:14,998 INFO L225 Difference]: With dead ends: 5351 [2024-11-13 13:32:14,998 INFO L226 Difference]: Without dead ends: 3480 [2024-11-13 13:32:15,001 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 13:32:15,002 INFO L432 NwaCegarLoop]: 926 mSDtfsCounter, 884 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 878 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 878 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:15,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1079 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [878 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-13 13:32:15,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3480 states. [2024-11-13 13:32:15,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3480 to 3479. [2024-11-13 13:32:15,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3478 states have (on average 1.518688901667625) internal successors, (5282), 3478 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:15,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 5282 transitions. [2024-11-13 13:32:15,096 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 5282 transitions. Word has length 109 [2024-11-13 13:32:15,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:15,097 INFO L471 AbstractCegarLoop]: Abstraction has 3479 states and 5282 transitions. [2024-11-13 13:32:15,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 2 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:15,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 5282 transitions. [2024-11-13 13:32:15,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-13 13:32:15,105 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:15,105 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 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 13:32:15,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:32:15,106 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:15,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:15,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1126486500, now seen corresponding path program 1 times [2024-11-13 13:32:15,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:15,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801701609] [2024-11-13 13:32:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:15,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:15,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:15,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801701609] [2024-11-13 13:32:15,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801701609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:15,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:15,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:32:15,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546120452] [2024-11-13 13:32:15,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:15,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:15,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:15,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:15,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:15,308 INFO L87 Difference]: Start difference. First operand 3479 states and 5282 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:19,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:19,701 INFO L93 Difference]: Finished difference Result 10144 states and 15439 transitions. [2024-11-13 13:32:19,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:19,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2024-11-13 13:32:19,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:19,730 INFO L225 Difference]: With dead ends: 10144 [2024-11-13 13:32:19,730 INFO L226 Difference]: Without dead ends: 6667 [2024-11-13 13:32:19,735 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 13:32:19,737 INFO L432 NwaCegarLoop]: 958 mSDtfsCounter, 890 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 2629 mSolverCounterSat, 740 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 740 IncrementalHoareTripleChecker+Valid, 2629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:19,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1092 Invalid, 3369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [740 Valid, 2629 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-13 13:32:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6667 states. [2024-11-13 13:32:19,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6667 to 6657. [2024-11-13 13:32:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6657 states, 6656 states have (on average 1.3728966346153846) internal successors, (9138), 6656 states have internal predecessors, (9138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:19,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6657 states to 6657 states and 9138 transitions. [2024-11-13 13:32:19,892 INFO L78 Accepts]: Start accepts. Automaton has 6657 states and 9138 transitions. Word has length 111 [2024-11-13 13:32:19,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:19,893 INFO L471 AbstractCegarLoop]: Abstraction has 6657 states and 9138 transitions. [2024-11-13 13:32:19,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 2 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:19,895 INFO L276 IsEmpty]: Start isEmpty. Operand 6657 states and 9138 transitions. [2024-11-13 13:32:19,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2024-11-13 13:32:19,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:19,899 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:19,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:32:19,900 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:19,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:19,900 INFO L85 PathProgramCache]: Analyzing trace with hash -116805003, now seen corresponding path program 1 times [2024-11-13 13:32:19,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:19,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395582795] [2024-11-13 13:32:19,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:19,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:20,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:20,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395582795] [2024-11-13 13:32:20,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395582795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:20,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:20,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:32:20,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89394855] [2024-11-13 13:32:20,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:20,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:20,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:20,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:20,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:20,134 INFO L87 Difference]: Start difference. First operand 6657 states and 9138 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:24,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:24,360 INFO L93 Difference]: Finished difference Result 19637 states and 26969 transitions. [2024-11-13 13:32:24,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:24,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2024-11-13 13:32:24,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:24,398 INFO L225 Difference]: With dead ends: 19637 [2024-11-13 13:32:24,398 INFO L226 Difference]: Without dead ends: 12982 [2024-11-13 13:32:24,406 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 13:32:24,407 INFO L432 NwaCegarLoop]: 950 mSDtfsCounter, 807 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 2449 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 3245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 2449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:24,407 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [807 Valid, 1100 Invalid, 3245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 2449 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-13 13:32:24,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12982 states. [2024-11-13 13:32:24,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12982 to 12964. [2024-11-13 13:32:24,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12964 states, 12963 states have (on average 1.2390650312427678) internal successors, (16062), 12963 states have internal predecessors, (16062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12964 states to 12964 states and 16062 transitions. [2024-11-13 13:32:24,753 INFO L78 Accepts]: Start accepts. Automaton has 12964 states and 16062 transitions. Word has length 117 [2024-11-13 13:32:24,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:24,753 INFO L471 AbstractCegarLoop]: Abstraction has 12964 states and 16062 transitions. [2024-11-13 13:32:24,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:24,754 INFO L276 IsEmpty]: Start isEmpty. Operand 12964 states and 16062 transitions. [2024-11-13 13:32:24,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-13 13:32:24,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:24,755 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:24,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:32:24,756 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:24,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:24,759 INFO L85 PathProgramCache]: Analyzing trace with hash 322546573, now seen corresponding path program 1 times [2024-11-13 13:32:24,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:24,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973350830] [2024-11-13 13:32:24,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:24,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:25,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:25,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973350830] [2024-11-13 13:32:25,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973350830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:25,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:25,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:32:25,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937108663] [2024-11-13 13:32:25,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:25,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:25,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:25,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:25,230 INFO L87 Difference]: Start difference. First operand 12964 states and 16062 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:28,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:28,883 INFO L93 Difference]: Finished difference Result 26713 states and 32924 transitions. [2024-11-13 13:32:28,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:28,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2024-11-13 13:32:28,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:28,919 INFO L225 Difference]: With dead ends: 26713 [2024-11-13 13:32:28,919 INFO L226 Difference]: Without dead ends: 13751 [2024-11-13 13:32:28,925 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 13:32:28,926 INFO L432 NwaCegarLoop]: 1083 mSDtfsCounter, 700 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:28,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1212 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-13 13:32:28,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13751 states. [2024-11-13 13:32:29,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13751 to 13751. [2024-11-13 13:32:29,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13751 states, 13750 states have (on average 1.2257454545454545) internal successors, (16854), 13750 states have internal predecessors, (16854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13751 states to 13751 states and 16854 transitions. [2024-11-13 13:32:29,142 INFO L78 Accepts]: Start accepts. Automaton has 13751 states and 16854 transitions. Word has length 133 [2024-11-13 13:32:29,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:29,143 INFO L471 AbstractCegarLoop]: Abstraction has 13751 states and 16854 transitions. [2024-11-13 13:32:29,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:29,143 INFO L276 IsEmpty]: Start isEmpty. Operand 13751 states and 16854 transitions. [2024-11-13 13:32:29,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-13 13:32:29,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:29,145 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:32:29,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:32:29,145 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:29,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:29,145 INFO L85 PathProgramCache]: Analyzing trace with hash -101919453, now seen corresponding path program 1 times [2024-11-13 13:32:29,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:29,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11104426] [2024-11-13 13:32:29,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:29,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:29,320 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:29,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:29,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11104426] [2024-11-13 13:32:29,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11104426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:29,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:29,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:29,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530580304] [2024-11-13 13:32:29,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:29,322 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:29,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:29,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:29,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:29,323 INFO L87 Difference]: Start difference. First operand 13751 states and 16854 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:34,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:34,080 INFO L93 Difference]: Finished difference Result 26728 states and 32944 transitions. [2024-11-13 13:32:34,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:34,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2024-11-13 13:32:34,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:34,113 INFO L225 Difference]: With dead ends: 26728 [2024-11-13 13:32:34,113 INFO L226 Difference]: Without dead ends: 13766 [2024-11-13 13:32:34,123 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 13:32:34,124 INFO L432 NwaCegarLoop]: 1288 mSDtfsCounter, 1080 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 3091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:34,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1341 Invalid, 3091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-13 13:32:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13766 states. [2024-11-13 13:32:34,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13766 to 13748. [2024-11-13 13:32:34,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13748 states, 13747 states have (on average 1.203753546228268) internal successors, (16548), 13747 states have internal predecessors, (16548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:34,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13748 states to 13748 states and 16548 transitions. [2024-11-13 13:32:34,298 INFO L78 Accepts]: Start accepts. Automaton has 13748 states and 16548 transitions. Word has length 140 [2024-11-13 13:32:34,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:34,298 INFO L471 AbstractCegarLoop]: Abstraction has 13748 states and 16548 transitions. [2024-11-13 13:32:34,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:34,299 INFO L276 IsEmpty]: Start isEmpty. Operand 13748 states and 16548 transitions. [2024-11-13 13:32:34,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-13 13:32:34,303 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:34,303 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-13 13:32:34,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:32:34,303 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:34,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:34,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1507944622, now seen corresponding path program 1 times [2024-11-13 13:32:34,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:34,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801880345] [2024-11-13 13:32:34,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:34,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:34,605 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:34,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:34,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801880345] [2024-11-13 13:32:34,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801880345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:34,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:34,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:34,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181521014] [2024-11-13 13:32:34,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:34,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:34,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:34,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:34,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:34,607 INFO L87 Difference]: Start difference. First operand 13748 states and 16548 transitions. Second operand has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:40,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:40,374 INFO L93 Difference]: Finished difference Result 33020 states and 40677 transitions. [2024-11-13 13:32:40,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:40,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2024-11-13 13:32:40,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:40,516 INFO L225 Difference]: With dead ends: 33020 [2024-11-13 13:32:40,517 INFO L226 Difference]: Without dead ends: 20061 [2024-11-13 13:32:40,525 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 13:32:40,526 INFO L432 NwaCegarLoop]: 825 mSDtfsCounter, 881 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 2387 mSolverCounterSat, 857 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 857 IncrementalHoareTripleChecker+Valid, 2387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:40,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 943 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [857 Valid, 2387 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-13 13:32:40,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20061 states. [2024-11-13 13:32:40,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20061 to 20051. [2024-11-13 13:32:40,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20051 states, 20050 states have (on average 1.1791022443890273) internal successors, (23641), 20050 states have internal predecessors, (23641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:40,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20051 states to 20051 states and 23641 transitions. [2024-11-13 13:32:40,815 INFO L78 Accepts]: Start accepts. Automaton has 20051 states and 23641 transitions. Word has length 222 [2024-11-13 13:32:40,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:40,815 INFO L471 AbstractCegarLoop]: Abstraction has 20051 states and 23641 transitions. [2024-11-13 13:32:40,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.0) internal successors, (222), 3 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand 20051 states and 23641 transitions. [2024-11-13 13:32:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2024-11-13 13:32:40,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:40,830 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:40,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:32:40,830 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:40,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:40,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1614609353, now seen corresponding path program 1 times [2024-11-13 13:32:40,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:40,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772176278] [2024-11-13 13:32:40,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:40,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:41,258 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-13 13:32:41,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:41,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772176278] [2024-11-13 13:32:41,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772176278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:41,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:41,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:41,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292013377] [2024-11-13 13:32:41,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:41,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:41,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:41,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:41,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:32:41,262 INFO L87 Difference]: Start difference. First operand 20051 states and 23641 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:47,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:47,318 INFO L93 Difference]: Finished difference Result 45632 states and 54873 transitions. [2024-11-13 13:32:47,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:32:47,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 311 [2024-11-13 13:32:47,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:47,373 INFO L225 Difference]: With dead ends: 45632 [2024-11-13 13:32:47,374 INFO L226 Difference]: Without dead ends: 26370 [2024-11-13 13:32:47,392 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 13:32:47,393 INFO L432 NwaCegarLoop]: 697 mSDtfsCounter, 968 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 960 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 3346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 960 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:47,394 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 785 Invalid, 3346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [960 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-13 13:32:47,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26370 states. [2024-11-13 13:32:47,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26370 to 26358. [2024-11-13 13:32:47,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26358 states, 26357 states have (on average 1.1839738968774898) internal successors, (31206), 26357 states have internal predecessors, (31206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:47,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26358 states to 26358 states and 31206 transitions. [2024-11-13 13:32:47,909 INFO L78 Accepts]: Start accepts. Automaton has 26358 states and 31206 transitions. Word has length 311 [2024-11-13 13:32:47,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:47,911 INFO L471 AbstractCegarLoop]: Abstraction has 26358 states and 31206 transitions. [2024-11-13 13:32:47,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:47,912 INFO L276 IsEmpty]: Start isEmpty. Operand 26358 states and 31206 transitions. [2024-11-13 13:32:47,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2024-11-13 13:32:47,923 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:47,923 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 13:32:47,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:32:47,924 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:47,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:47,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1470649629, now seen corresponding path program 1 times [2024-11-13 13:32:47,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:47,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174229803] [2024-11-13 13:32:47,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:47,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:48,623 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 380 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-13 13:32:48,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:48,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174229803] [2024-11-13 13:32:48,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174229803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:48,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:48,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:32:48,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006508135] [2024-11-13 13:32:48,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:48,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:32:48,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:48,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:32:48,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:32:48,626 INFO L87 Difference]: Start difference. First operand 26358 states and 31206 transitions. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:56,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:56,268 INFO L93 Difference]: Finished difference Result 51946 states and 61649 transitions. [2024-11-13 13:32:56,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:32:56,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 363 [2024-11-13 13:32:56,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:56,320 INFO L225 Difference]: With dead ends: 51946 [2024-11-13 13:32:56,320 INFO L226 Difference]: Without dead ends: 26377 [2024-11-13 13:32:56,336 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 13:32:56,337 INFO L432 NwaCegarLoop]: 777 mSDtfsCounter, 1517 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 4890 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 5357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 4890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:56,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 1037 Invalid, 5357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 4890 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-13 13:32:56,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26377 states. [2024-11-13 13:32:56,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26377 to 26358. [2024-11-13 13:32:56,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26358 states, 26357 states have (on average 1.1816974617748606) internal successors, (31146), 26357 states have internal predecessors, (31146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26358 states to 26358 states and 31146 transitions. [2024-11-13 13:32:56,745 INFO L78 Accepts]: Start accepts. Automaton has 26358 states and 31146 transitions. Word has length 363 [2024-11-13 13:32:56,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:56,745 INFO L471 AbstractCegarLoop]: Abstraction has 26358 states and 31146 transitions. [2024-11-13 13:32:56,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:32:56,746 INFO L276 IsEmpty]: Start isEmpty. Operand 26358 states and 31146 transitions. [2024-11-13 13:32:56,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2024-11-13 13:32:56,754 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:56,755 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 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, 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 13:32:56,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 13:32:56,755 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:56,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:56,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1052949290, now seen corresponding path program 1 times [2024-11-13 13:32:56,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:56,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457797668] [2024-11-13 13:32:56,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:56,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:57,824 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 167 proven. 75 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2024-11-13 13:32:57,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:57,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457797668] [2024-11-13 13:32:57,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457797668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:57,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743619648] [2024-11-13 13:32:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:57,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:57,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:57,828 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:57,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:32:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:58,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:32:58,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:58,815 INFO L134 CoverageAnalysis]: Checked inductivity of 606 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2024-11-13 13:32:58,816 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:32:58,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743619648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:58,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:32:58,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-13 13:32:58,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741093026] [2024-11-13 13:32:58,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:58,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:32:58,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:58,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:32:58,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:32:58,819 INFO L87 Difference]: Start difference. First operand 26358 states and 31146 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:04,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:33:04,559 INFO L93 Difference]: Finished difference Result 77265 states and 91566 transitions. [2024-11-13 13:33:04,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:33:04,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2024-11-13 13:33:04,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:33:04,612 INFO L225 Difference]: With dead ends: 77265 [2024-11-13 13:33:04,613 INFO L226 Difference]: Without dead ends: 51696 [2024-11-13 13:33:04,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 370 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 13:33:04,631 INFO L432 NwaCegarLoop]: 930 mSDtfsCounter, 1043 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 2715 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 2715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:33:04,631 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 1139 Invalid, 3249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 2715 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-13 13:33:04,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51696 states. [2024-11-13 13:33:05,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51696 to 50890. [2024-11-13 13:33:05,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50890 states, 50889 states have (on average 1.1492463990253297) internal successors, (58484), 50889 states have internal predecessors, (58484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50890 states to 50890 states and 58484 transitions. [2024-11-13 13:33:05,207 INFO L78 Accepts]: Start accepts. Automaton has 50890 states and 58484 transitions. Word has length 371 [2024-11-13 13:33:05,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:33:05,208 INFO L471 AbstractCegarLoop]: Abstraction has 50890 states and 58484 transitions. [2024-11-13 13:33:05,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 2 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:05,208 INFO L276 IsEmpty]: Start isEmpty. Operand 50890 states and 58484 transitions. [2024-11-13 13:33:05,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2024-11-13 13:33:05,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:33:05,215 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:05,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:33:05,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 13:33:05,416 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:33:05,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:33:05,416 INFO L85 PathProgramCache]: Analyzing trace with hash -262601737, now seen corresponding path program 1 times [2024-11-13 13:33:05,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:33:05,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340503266] [2024-11-13 13:33:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:05,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:33:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:33:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-13 13:33:06,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:33:06,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340503266] [2024-11-13 13:33:06,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340503266] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:33:06,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:33:06,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:33:06,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034341295] [2024-11-13 13:33:06,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:33:06,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:33:06,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:33:06,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:33:06,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:33:06,601 INFO L87 Difference]: Start difference. First operand 50890 states and 58484 transitions. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:16,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:33:16,338 INFO L93 Difference]: Finished difference Result 157002 states and 182840 transitions. [2024-11-13 13:33:16,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:33:16,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 371 [2024-11-13 13:33:16,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:33:16,444 INFO L225 Difference]: With dead ends: 157002 [2024-11-13 13:33:16,444 INFO L226 Difference]: Without dead ends: 106901 [2024-11-13 13:33:16,481 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 13:33:16,482 INFO L432 NwaCegarLoop]: 609 mSDtfsCounter, 1678 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 5335 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1678 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 6265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 5335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:33:16,482 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1678 Valid, 855 Invalid, 6265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 5335 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-13 13:33:16,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106901 states. [2024-11-13 13:33:18,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106901 to 106840. [2024-11-13 13:33:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106840 states, 106839 states have (on average 1.1307949344340549) internal successors, (120813), 106839 states have internal predecessors, (120813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:18,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106840 states to 106840 states and 120813 transitions. [2024-11-13 13:33:18,303 INFO L78 Accepts]: Start accepts. Automaton has 106840 states and 120813 transitions. Word has length 371 [2024-11-13 13:33:18,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:33:18,304 INFO L471 AbstractCegarLoop]: Abstraction has 106840 states and 120813 transitions. [2024-11-13 13:33:18,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 3 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:18,304 INFO L276 IsEmpty]: Start isEmpty. Operand 106840 states and 120813 transitions. [2024-11-13 13:33:18,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-13 13:33:18,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:33:18,325 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:33:18,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:33:18,326 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:33:18,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:33:18,327 INFO L85 PathProgramCache]: Analyzing trace with hash 280150136, now seen corresponding path program 1 times [2024-11-13 13:33:18,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:33:18,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362492882] [2024-11-13 13:33:18,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:18,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:33:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:33:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 494 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-13 13:33:19,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:33:19,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362492882] [2024-11-13 13:33:19,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362492882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:33:19,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:33:19,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:33:19,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754849418] [2024-11-13 13:33:19,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:33:19,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:33:19,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:33:19,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:33:19,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:33:19,438 INFO L87 Difference]: Start difference. First operand 106840 states and 120813 transitions. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:31,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:33:31,005 INFO L93 Difference]: Finished difference Result 297419 states and 338050 transitions. [2024-11-13 13:33:31,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:33:31,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 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 400 [2024-11-13 13:33:31,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:33:31,360 INFO L225 Difference]: With dead ends: 297419 [2024-11-13 13:33:31,360 INFO L226 Difference]: Without dead ends: 191368 [2024-11-13 13:33:31,426 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 13:33:31,427 INFO L432 NwaCegarLoop]: 641 mSDtfsCounter, 1738 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 6183 mSolverCounterSat, 1131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1738 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 7314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1131 IncrementalHoareTripleChecker+Valid, 6183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:33:31,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1738 Valid, 846 Invalid, 7314 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1131 Valid, 6183 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2024-11-13 13:33:31,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191368 states. [2024-11-13 13:33:34,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191368 to 191163. [2024-11-13 13:33:34,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191163 states, 191162 states have (on average 1.1263954133143617) internal successors, (215324), 191162 states have internal predecessors, (215324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191163 states to 191163 states and 215324 transitions. [2024-11-13 13:33:35,241 INFO L78 Accepts]: Start accepts. Automaton has 191163 states and 215324 transitions. Word has length 400 [2024-11-13 13:33:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:33:35,241 INFO L471 AbstractCegarLoop]: Abstraction has 191163 states and 215324 transitions. [2024-11-13 13:33:35,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:35,242 INFO L276 IsEmpty]: Start isEmpty. Operand 191163 states and 215324 transitions. [2024-11-13 13:33:35,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2024-11-13 13:33:35,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:33:35,257 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:33:35,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:33:35,258 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:33:35,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:33:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash -47831826, now seen corresponding path program 1 times [2024-11-13 13:33:35,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:33:35,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546918050] [2024-11-13 13:33:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:35,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:33:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:33:35,911 INFO L134 CoverageAnalysis]: Checked inductivity of 426 backedges. 384 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-13 13:33:35,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:33:35,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546918050] [2024-11-13 13:33:35,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546918050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:33:35,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:33:35,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:33:35,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107937902] [2024-11-13 13:33:35,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:33:35,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:33:35,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:33:35,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:33:35,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:33:35,919 INFO L87 Difference]: Start difference. First operand 191163 states and 215324 transitions. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:42,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:33:42,083 INFO L93 Difference]: Finished difference Result 366359 states and 413563 transitions. [2024-11-13 13:33:42,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:33:42,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 400 [2024-11-13 13:33:42,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:33:42,273 INFO L225 Difference]: With dead ends: 366359 [2024-11-13 13:33:42,273 INFO L226 Difference]: Without dead ends: 166530 [2024-11-13 13:33:42,335 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 13:33:42,336 INFO L432 NwaCegarLoop]: 1499 mSDtfsCounter, 1030 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 2348 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 2941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 2348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:33:42,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 1634 Invalid, 2941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 2348 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-13 13:33:42,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166530 states. [2024-11-13 13:33:45,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166530 to 164155. [2024-11-13 13:33:45,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164155 states, 164154 states have (on average 1.0926629871949511) internal successors, (179365), 164154 states have internal predecessors, (179365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164155 states to 164155 states and 179365 transitions. [2024-11-13 13:33:46,627 INFO L78 Accepts]: Start accepts. Automaton has 164155 states and 179365 transitions. Word has length 400 [2024-11-13 13:33:46,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:33:46,627 INFO L471 AbstractCegarLoop]: Abstraction has 164155 states and 179365 transitions. [2024-11-13 13:33:46,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:46,627 INFO L276 IsEmpty]: Start isEmpty. Operand 164155 states and 179365 transitions. [2024-11-13 13:33:46,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2024-11-13 13:33:46,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:33:46,640 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-13 13:33:46,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 13:33:46,641 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:33:46,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:33:46,641 INFO L85 PathProgramCache]: Analyzing trace with hash -639390375, now seen corresponding path program 1 times [2024-11-13 13:33:46,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:33:46,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162652940] [2024-11-13 13:33:46,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:46,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:33:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:33:48,810 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 324 proven. 110 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-13 13:33:48,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:33:48,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162652940] [2024-11-13 13:33:48,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162652940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:33:48,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121730030] [2024-11-13 13:33:48,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:48,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:33:48,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:33:48,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:33:48,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:33:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:33:49,049 INFO L255 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 13:33:49,058 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:33:49,393 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-13 13:33:49,393 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:33:49,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121730030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:33:49,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:33:49,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-13 13:33:49,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599085694] [2024-11-13 13:33:49,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:33:49,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:33:49,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:33:49,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:33:49,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:33:49,396 INFO L87 Difference]: Start difference. First operand 164155 states and 179365 transitions. Second operand has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:54,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:33:54,936 INFO L93 Difference]: Finished difference Result 327520 states and 357936 transitions. [2024-11-13 13:33:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:33:54,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 420 [2024-11-13 13:33:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:33:55,108 INFO L225 Difference]: With dead ends: 327520 [2024-11-13 13:33:55,108 INFO L226 Difference]: Without dead ends: 164154 [2024-11-13 13:33:55,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 419 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 13:33:55,162 INFO L432 NwaCegarLoop]: 1327 mSDtfsCounter, 1059 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:33:55,162 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1059 Valid, 1403 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-13 13:33:55,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164154 states. [2024-11-13 13:33:56,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164154 to 163363. [2024-11-13 13:33:57,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163363 states, 163362 states have (on average 1.07054884244806) internal successors, (174887), 163362 states have internal predecessors, (174887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:57,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163363 states to 163363 states and 174887 transitions. [2024-11-13 13:33:57,608 INFO L78 Accepts]: Start accepts. Automaton has 163363 states and 174887 transitions. Word has length 420 [2024-11-13 13:33:57,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:33:57,609 INFO L471 AbstractCegarLoop]: Abstraction has 163363 states and 174887 transitions. [2024-11-13 13:33:57,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.0) internal successors, (267), 3 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:33:57,610 INFO L276 IsEmpty]: Start isEmpty. Operand 163363 states and 174887 transitions. [2024-11-13 13:33:57,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-11-13 13:33:57,614 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:33:57,615 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 2, 2, 2, 2, 2, 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] [2024-11-13 13:33:57,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:33:57,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 13:33:57,819 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:33:57,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:33:57,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1815064101, now seen corresponding path program 1 times [2024-11-13 13:33:57,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:33:57,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618827399] [2024-11-13 13:33:57,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:57,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:33:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:33:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 390 proven. 110 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2024-11-13 13:33:59,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:33:59,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618827399] [2024-11-13 13:33:59,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618827399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:33:59,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031804965] [2024-11-13 13:33:59,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:59,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:33:59,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:33:59,625 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:33:59,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:34:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:34:00,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 13:34:00,016 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:34:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-13 13:34:01,241 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:34:01,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031804965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:34:01,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:34:01,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-13 13:34:01,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244953098] [2024-11-13 13:34:01,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:34:01,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:34:01,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:34:01,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:34:01,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:34:01,243 INFO L87 Difference]: Start difference. First operand 163363 states and 174887 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:07,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:34:07,497 INFO L93 Difference]: Finished difference Result 315715 states and 338402 transitions. [2024-11-13 13:34:07,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:34:07,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 438 [2024-11-13 13:34:07,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:34:07,657 INFO L225 Difference]: With dead ends: 315715 [2024-11-13 13:34:07,657 INFO L226 Difference]: Without dead ends: 167313 [2024-11-13 13:34:07,710 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:34:07,711 INFO L432 NwaCegarLoop]: 988 mSDtfsCounter, 685 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 2421 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 2534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 2421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:34:07,711 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1119 Invalid, 2534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 2421 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2024-11-13 13:34:07,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167313 states. [2024-11-13 13:34:09,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167313 to 164154. [2024-11-13 13:34:09,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164154 states, 164153 states have (on average 1.0661334243053737) internal successors, (175009), 164153 states have internal predecessors, (175009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:09,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164154 states to 164154 states and 175009 transitions. [2024-11-13 13:34:09,875 INFO L78 Accepts]: Start accepts. Automaton has 164154 states and 175009 transitions. Word has length 438 [2024-11-13 13:34:09,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:34:09,876 INFO L471 AbstractCegarLoop]: Abstraction has 164154 states and 175009 transitions. [2024-11-13 13:34:09,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 2 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:09,876 INFO L276 IsEmpty]: Start isEmpty. Operand 164154 states and 175009 transitions. [2024-11-13 13:34:09,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-11-13 13:34:09,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:34:09,882 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:34:09,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 13:34:10,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c1565bc6-bbd0-4a81-9c8c-90aeb8fdea24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 13:34:10,082 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:34:10,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:34:10,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1801531258, now seen corresponding path program 1 times [2024-11-13 13:34:10,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:34:10,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387491929] [2024-11-13 13:34:10,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:34:10,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:34:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:34:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 466 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2024-11-13 13:34:10,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:34:10,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387491929] [2024-11-13 13:34:10,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387491929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:34:10,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:34:10,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:34:10,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594139826] [2024-11-13 13:34:10,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:34:10,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:34:10,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:34:10,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:34:10,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:34:10,546 INFO L87 Difference]: Start difference. First operand 164154 states and 175009 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:17,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:34:17,719 INFO L93 Difference]: Finished difference Result 362166 states and 387971 transitions. [2024-11-13 13:34:17,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:34:17,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 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 475 [2024-11-13 13:34:17,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:34:18,033 INFO L225 Difference]: With dead ends: 362166 [2024-11-13 13:34:18,033 INFO L226 Difference]: Without dead ends: 198801 [2024-11-13 13:34:18,104 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 13:34:18,104 INFO L432 NwaCegarLoop]: 1739 mSDtfsCounter, 734 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 3062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:34:18,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1880 Invalid, 3062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 2494 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-13 13:34:18,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198801 states. [2024-11-13 13:34:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198801 to 195635. [2024-11-13 13:34:20,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195635 states, 195634 states have (on average 1.0591666070314976) internal successors, (207209), 195634 states have internal predecessors, (207209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195635 states to 195635 states and 207209 transitions. [2024-11-13 13:34:20,932 INFO L78 Accepts]: Start accepts. Automaton has 195635 states and 207209 transitions. Word has length 475 [2024-11-13 13:34:20,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:34:20,933 INFO L471 AbstractCegarLoop]: Abstraction has 195635 states and 207209 transitions. [2024-11-13 13:34:20,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:20,933 INFO L276 IsEmpty]: Start isEmpty. Operand 195635 states and 207209 transitions. [2024-11-13 13:34:20,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2024-11-13 13:34:20,939 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:34:20,939 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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] [2024-11-13 13:34:20,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 13:34:20,939 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:34:20,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:34:20,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1881703006, now seen corresponding path program 1 times [2024-11-13 13:34:20,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:34:20,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28539464] [2024-11-13 13:34:20,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:34:20,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:34:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:34:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 757 trivial. 0 not checked. [2024-11-13 13:34:21,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:34:21,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28539464] [2024-11-13 13:34:21,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28539464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:34:21,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:34:21,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:34:21,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011122199] [2024-11-13 13:34:21,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:34:21,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:34:21,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:34:21,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:34:21,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:34:21,179 INFO L87 Difference]: Start difference. First operand 195635 states and 207209 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:27,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:34:27,766 INFO L93 Difference]: Finished difference Result 398344 states and 422704 transitions. [2024-11-13 13:34:27,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:34:27,769 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 488 [2024-11-13 13:34:27,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:34:28,022 INFO L225 Difference]: With dead ends: 398344 [2024-11-13 13:34:28,022 INFO L226 Difference]: Without dead ends: 222392 [2024-11-13 13:34:28,081 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 13:34:28,082 INFO L432 NwaCegarLoop]: 1472 mSDtfsCounter, 855 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 3078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:34:28,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [855 Valid, 1618 Invalid, 3078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-13 13:34:28,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222392 states. [2024-11-13 13:34:31,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222392 to 216879. [2024-11-13 13:34:31,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216879 states, 216878 states have (on average 1.0572856629072567) internal successors, (229302), 216878 states have internal predecessors, (229302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216879 states to 216879 states and 229302 transitions. [2024-11-13 13:34:31,473 INFO L78 Accepts]: Start accepts. Automaton has 216879 states and 229302 transitions. Word has length 488 [2024-11-13 13:34:31,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:34:31,473 INFO L471 AbstractCegarLoop]: Abstraction has 216879 states and 229302 transitions. [2024-11-13 13:34:31,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:34:31,473 INFO L276 IsEmpty]: Start isEmpty. Operand 216879 states and 229302 transitions. [2024-11-13 13:34:31,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2024-11-13 13:34:31,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:34:31,484 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1] [2024-11-13 13:34:31,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 13:34:31,484 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:34:31,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:34:31,485 INFO L85 PathProgramCache]: Analyzing trace with hash 993072494, now seen corresponding path program 1 times [2024-11-13 13:34:31,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:34:31,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358577136] [2024-11-13 13:34:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:34:31,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:34:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:34:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 966 backedges. 533 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2024-11-13 13:34:32,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:34:32,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358577136] [2024-11-13 13:34:32,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358577136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:34:32,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:34:32,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:34:32,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954551193] [2024-11-13 13:34:32,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:34:32,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:34:32,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:34:32,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:34:32,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:34:32,507 INFO L87 Difference]: Start difference. First operand 216879 states and 229302 transitions. Second operand has 3 states, 3 states have (on average 95.33333333333333) 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 13:34:38,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:34:38,163 INFO L93 Difference]: Finished difference Result 421113 states and 446360 transitions. [2024-11-13 13:34:38,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:34:38,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.33333333333333) 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 511 [2024-11-13 13:34:38,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:34:38,386 INFO L225 Difference]: With dead ends: 421113 [2024-11-13 13:34:38,387 INFO L226 Difference]: Without dead ends: 223917 [2024-11-13 13:34:38,450 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 13:34:38,451 INFO L432 NwaCegarLoop]: 1357 mSDtfsCounter, 1008 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 2691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:34:38,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1429 Invalid, 2691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 2276 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-13 13:34:38,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223917 states.