./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB --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 c056d4e57d61d37550728f0e28e1a5e47ebeedfd3e4791c23bdeb0bab1210358 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:16:04,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:16:04,999 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:16:05,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:16:05,004 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:16:05,027 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:16:05,028 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:16:05,028 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:16:05,028 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:16:05,029 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:16:05,029 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:16:05,029 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:16:05,029 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:16:05,029 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:16:05,030 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:16:05,030 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:16:05,030 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:16:05,030 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:16:05,030 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:16:05,030 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:16:05,031 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:16:05,031 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:16:05,031 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:16:05,031 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:16:05,031 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:16:05,031 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:16:05,031 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:16:05,031 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:16:05,032 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:16:05,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:16:05,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:16:05,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:16:05,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:16:05,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:16:05,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:16:05,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:16:05,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:16:05,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:16:05,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:16:05,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:16:05,033 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:16:05,033 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:16:05,033 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:16:05,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:16:05,033 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:16:05,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:16:05,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:16:05,034 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:16:05,034 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_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB 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 -> c056d4e57d61d37550728f0e28e1a5e47ebeedfd3e4791c23bdeb0bab1210358 [2024-11-28 04:16:05,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:16:05,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:16:05,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:16:05,382 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:16:05,382 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:16:05,384 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2024-11-28 04:16:08,546 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/data/22955a0d5/a32f8f475dba44dba315c5d86908fde3/FLAG6b93dd6fa [2024-11-28 04:16:08,967 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:16:08,968 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2024-11-28 04:16:08,986 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/data/22955a0d5/a32f8f475dba44dba315c5d86908fde3/FLAG6b93dd6fa [2024-11-28 04:16:09,013 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/data/22955a0d5/a32f8f475dba44dba315c5d86908fde3 [2024-11-28 04:16:09,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:16:09,020 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:16:09,023 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:16:09,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:16:09,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:16:09,032 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,033 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6753d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09, skipping insertion in model container [2024-11-28 04:16:09,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,086 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:16:09,370 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_ad191915-5e15-4222-968e-87640b3e0961/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5769,5782] [2024-11-28 04:16:09,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:16:09,425 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:16:09,467 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_ad191915-5e15-4222-968e-87640b3e0961/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c[5769,5782] [2024-11-28 04:16:09,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:16:09,507 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:16:09,508 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09 WrapperNode [2024-11-28 04:16:09,508 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:16:09,509 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:16:09,509 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:16:09,509 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:16:09,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,526 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,568 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 456 [2024-11-28 04:16:09,568 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:16:09,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:16:09,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:16:09,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:16:09,579 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,584 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,614 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]. [2024-11-28 04:16:09,614 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,614 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,624 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,632 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,637 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:16:09,646 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:16:09,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:16:09,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:16:09,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09" (1/1) ... [2024-11-28 04:16:09,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:16:09,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:09,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:16:09,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:16:09,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:16:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:16:09,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:16:09,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:16:09,863 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:16:09,865 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:16:10,429 INFO L? ?]: Removed 42 outVars from TransFormulas that were not future-live. [2024-11-28 04:16:10,430 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:16:10,447 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:16:10,447 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:16:10,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:16:10 BoogieIcfgContainer [2024-11-28 04:16:10,448 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:16:10,454 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:16:10,454 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:16:10,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:16:10,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:16:09" (1/3) ... [2024-11-28 04:16:10,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df2007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:16:10, skipping insertion in model container [2024-11-28 04:16:10,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:16:09" (2/3) ... [2024-11-28 04:16:10,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5df2007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:16:10, skipping insertion in model container [2024-11-28 04:16:10,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:16:10" (3/3) ... [2024-11-28 04:16:10,464 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2024-11-28 04:16:10,484 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:16:10,486 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.5.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c that has 1 procedures, 97 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 04:16:10,592 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:16:10,608 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;@7367150f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:16:10,608 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:16:10,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:10,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 04:16:10,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:10,624 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:10,624 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:10,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:10,630 INFO L85 PathProgramCache]: Analyzing trace with hash -857023919, now seen corresponding path program 1 times [2024-11-28 04:16:10,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:10,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112458461] [2024-11-28 04:16:10,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:10,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:11,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:11,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:11,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112458461] [2024-11-28 04:16:11,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112458461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:11,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:11,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:16:11,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226291449] [2024-11-28 04:16:11,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:11,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:16:11,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:11,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:16:11,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:16:11,139 INFO L87 Difference]: Start difference. First operand has 97 states, 95 states have (on average 1.736842105263158) internal successors, (165), 96 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:11,204 INFO L93 Difference]: Finished difference Result 215 states and 350 transitions. [2024-11-28 04:16:11,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:16:11,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-28 04:16:11,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:11,218 INFO L225 Difference]: With dead ends: 215 [2024-11-28 04:16:11,220 INFO L226 Difference]: Without dead ends: 146 [2024-11-28 04:16:11,223 INFO L434 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 [2024-11-28 04:16:11,227 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 115 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:11,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 341 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:16:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-28 04:16:11,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2024-11-28 04:16:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4615384615384615) internal successors, (209), 143 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 209 transitions. [2024-11-28 04:16:11,281 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 209 transitions. Word has length 59 [2024-11-28 04:16:11,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:11,282 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 209 transitions. [2024-11-28 04:16:11,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 209 transitions. [2024-11-28 04:16:11,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 04:16:11,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:11,284 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:11,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:16:11,285 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:11,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:11,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1265777508, now seen corresponding path program 1 times [2024-11-28 04:16:11,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:11,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401132739] [2024-11-28 04:16:11,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:11,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:11,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:11,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:11,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401132739] [2024-11-28 04:16:11,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401132739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:11,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:11,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:16:11,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613942608] [2024-11-28 04:16:11,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:11,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:16:11,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:11,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:16:11,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:16:11,614 INFO L87 Difference]: Start difference. First operand 144 states and 209 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:11,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:11,690 INFO L93 Difference]: Finished difference Result 348 states and 533 transitions. [2024-11-28 04:16:11,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:16:11,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-28 04:16:11,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:11,697 INFO L225 Difference]: With dead ends: 348 [2024-11-28 04:16:11,697 INFO L226 Difference]: Without dead ends: 238 [2024-11-28 04:16:11,698 INFO L434 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 [2024-11-28 04:16:11,702 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 80 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:11,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 293 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:16:11,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-28 04:16:11,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2024-11-28 04:16:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.5106382978723405) internal successors, (355), 235 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:11,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 355 transitions. [2024-11-28 04:16:11,742 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 355 transitions. Word has length 60 [2024-11-28 04:16:11,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:11,743 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 355 transitions. [2024-11-28 04:16:11,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:11,743 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 355 transitions. [2024-11-28 04:16:11,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 04:16:11,745 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:11,745 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:11,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:16:11,747 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:11,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:11,748 INFO L85 PathProgramCache]: Analyzing trace with hash -943758039, now seen corresponding path program 1 times [2024-11-28 04:16:11,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:11,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451974789] [2024-11-28 04:16:11,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:11,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:11,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:11,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451974789] [2024-11-28 04:16:11,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451974789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:11,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:11,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:16:11,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099123712] [2024-11-28 04:16:11,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:11,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:16:11,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:11,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:16:11,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:16:11,991 INFO L87 Difference]: Start difference. First operand 236 states and 355 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:12,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:12,025 INFO L93 Difference]: Finished difference Result 608 states and 945 transitions. [2024-11-28 04:16:12,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:16:12,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-28 04:16:12,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:12,029 INFO L225 Difference]: With dead ends: 608 [2024-11-28 04:16:12,029 INFO L226 Difference]: Without dead ends: 406 [2024-11-28 04:16:12,030 INFO L434 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 [2024-11-28 04:16:12,031 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 75 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:12,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 289 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:16:12,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-28 04:16:12,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 404. [2024-11-28 04:16:12,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 1.5359801488833746) internal successors, (619), 403 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 619 transitions. [2024-11-28 04:16:12,066 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 619 transitions. Word has length 61 [2024-11-28 04:16:12,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:12,067 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 619 transitions. [2024-11-28 04:16:12,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:12,067 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 619 transitions. [2024-11-28 04:16:12,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:16:12,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:12,069 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:12,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:16:12,070 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:12,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:12,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1997598018, now seen corresponding path program 1 times [2024-11-28 04:16:12,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:12,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026793147] [2024-11-28 04:16:12,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:12,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:12,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:12,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026793147] [2024-11-28 04:16:12,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026793147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:12,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:12,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:16:12,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586175094] [2024-11-28 04:16:12,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:12,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:16:12,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:12,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:16:12,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:16:12,335 INFO L87 Difference]: Start difference. First operand 404 states and 619 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:12,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:12,386 INFO L93 Difference]: Finished difference Result 1080 states and 1685 transitions. [2024-11-28 04:16:12,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:16:12,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-28 04:16:12,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:12,393 INFO L225 Difference]: With dead ends: 1080 [2024-11-28 04:16:12,393 INFO L226 Difference]: Without dead ends: 710 [2024-11-28 04:16:12,395 INFO L434 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 [2024-11-28 04:16:12,396 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 70 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:12,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 285 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:16:12,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-11-28 04:16:12,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 708. [2024-11-28 04:16:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 707 states have (on average 1.5431400282885432) internal successors, (1091), 707 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1091 transitions. [2024-11-28 04:16:12,455 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1091 transitions. Word has length 62 [2024-11-28 04:16:12,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:12,456 INFO L471 AbstractCegarLoop]: Abstraction has 708 states and 1091 transitions. [2024-11-28 04:16:12,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:12,456 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1091 transitions. [2024-11-28 04:16:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 04:16:12,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:12,458 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:12,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:16:12,459 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:12,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:12,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1910647641, now seen corresponding path program 1 times [2024-11-28 04:16:12,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:12,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715200654] [2024-11-28 04:16:12,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:12,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:12,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:12,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715200654] [2024-11-28 04:16:12,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715200654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:12,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:12,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:16:12,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203725129] [2024-11-28 04:16:12,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:12,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:16:12,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:12,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:16:12,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:16:12,616 INFO L87 Difference]: Start difference. First operand 708 states and 1091 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:12,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:12,659 INFO L93 Difference]: Finished difference Result 1928 states and 2997 transitions. [2024-11-28 04:16:12,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:16:12,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-28 04:16:12,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:12,666 INFO L225 Difference]: With dead ends: 1928 [2024-11-28 04:16:12,667 INFO L226 Difference]: Without dead ends: 1254 [2024-11-28 04:16:12,668 INFO L434 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 [2024-11-28 04:16:12,669 INFO L435 NwaCegarLoop]: 175 mSDtfsCounter, 65 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:12,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 281 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:16:12,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2024-11-28 04:16:12,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1252. [2024-11-28 04:16:12,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 1.5371702637889688) internal successors, (1923), 1251 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1923 transitions. [2024-11-28 04:16:12,724 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1923 transitions. Word has length 63 [2024-11-28 04:16:12,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:12,726 INFO L471 AbstractCegarLoop]: Abstraction has 1252 states and 1923 transitions. [2024-11-28 04:16:12,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:12,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1923 transitions. [2024-11-28 04:16:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 04:16:12,727 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:12,728 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:12,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:16:12,728 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:12,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:12,729 INFO L85 PathProgramCache]: Analyzing trace with hash 2007440880, now seen corresponding path program 1 times [2024-11-28 04:16:12,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:12,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617870579] [2024-11-28 04:16:12,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:12,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:13,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:13,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617870579] [2024-11-28 04:16:13,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617870579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:13,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:13,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:16:13,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417006179] [2024-11-28 04:16:13,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:13,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:16:13,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:13,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:16:13,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:13,081 INFO L87 Difference]: Start difference. First operand 1252 states and 1923 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:13,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:13,589 INFO L93 Difference]: Finished difference Result 13432 states and 20813 transitions. [2024-11-28 04:16:13,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:16:13,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-28 04:16:13,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:13,645 INFO L225 Difference]: With dead ends: 13432 [2024-11-28 04:16:13,645 INFO L226 Difference]: Without dead ends: 12214 [2024-11-28 04:16:13,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:16:13,653 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 1155 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:13,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1423 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:16:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12214 states. [2024-11-28 04:16:13,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12214 to 2468. [2024-11-28 04:16:13,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 1.5188488042156465) internal successors, (3747), 2467 states have internal predecessors, (3747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:13,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3747 transitions. [2024-11-28 04:16:13,879 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3747 transitions. Word has length 64 [2024-11-28 04:16:13,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:13,880 INFO L471 AbstractCegarLoop]: Abstraction has 2468 states and 3747 transitions. [2024-11-28 04:16:13,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:13,880 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3747 transitions. [2024-11-28 04:16:13,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 04:16:13,884 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:13,884 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:13,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:16:13,885 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:13,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:13,886 INFO L85 PathProgramCache]: Analyzing trace with hash -190448501, now seen corresponding path program 1 times [2024-11-28 04:16:13,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:13,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740591464] [2024-11-28 04:16:13,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:13,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:14,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:14,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740591464] [2024-11-28 04:16:14,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740591464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:14,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:14,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:16:14,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026114187] [2024-11-28 04:16:14,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:14,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:16:14,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:14,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:16:14,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:14,486 INFO L87 Difference]: Start difference. First operand 2468 states and 3747 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:14,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:14,784 INFO L93 Difference]: Finished difference Result 4904 states and 7461 transitions. [2024-11-28 04:16:14,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:16:14,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-28 04:16:14,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:14,793 INFO L225 Difference]: With dead ends: 4904 [2024-11-28 04:16:14,793 INFO L226 Difference]: Without dead ends: 2470 [2024-11-28 04:16:14,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:16:14,797 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 260 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:14,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 487 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:14,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2024-11-28 04:16:14,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2468. [2024-11-28 04:16:14,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 1.5058775841102554) internal successors, (3715), 2467 states have internal predecessors, (3715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:14,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3715 transitions. [2024-11-28 04:16:14,860 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3715 transitions. Word has length 66 [2024-11-28 04:16:14,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:14,861 INFO L471 AbstractCegarLoop]: Abstraction has 2468 states and 3715 transitions. [2024-11-28 04:16:14,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:14,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3715 transitions. [2024-11-28 04:16:14,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 04:16:14,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:14,862 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:14,862 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:16:14,863 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:14,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:14,863 INFO L85 PathProgramCache]: Analyzing trace with hash -211451156, now seen corresponding path program 1 times [2024-11-28 04:16:14,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:14,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666089910] [2024-11-28 04:16:14,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:14,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:14,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:14,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666089910] [2024-11-28 04:16:14,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666089910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:14,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:14,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:16:14,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077017977] [2024-11-28 04:16:14,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:14,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:16:14,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:14,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:16:14,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:16:14,984 INFO L87 Difference]: Start difference. First operand 2468 states and 3715 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:15,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:15,031 INFO L93 Difference]: Finished difference Result 6074 states and 9159 transitions. [2024-11-28 04:16:15,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:16:15,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-28 04:16:15,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:15,044 INFO L225 Difference]: With dead ends: 6074 [2024-11-28 04:16:15,044 INFO L226 Difference]: Without dead ends: 3640 [2024-11-28 04:16:15,047 INFO L434 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 [2024-11-28 04:16:15,048 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 56 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:15,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 250 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:16:15,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2024-11-28 04:16:15,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3638. [2024-11-28 04:16:15,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.4927137750893593) internal successors, (5429), 3637 states have internal predecessors, (5429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:15,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5429 transitions. [2024-11-28 04:16:15,183 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5429 transitions. Word has length 66 [2024-11-28 04:16:15,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:15,183 INFO L471 AbstractCegarLoop]: Abstraction has 3638 states and 5429 transitions. [2024-11-28 04:16:15,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5429 transitions. [2024-11-28 04:16:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:16:15,185 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:15,185 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:15,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:16:15,185 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:15,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:15,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1610845590, now seen corresponding path program 1 times [2024-11-28 04:16:15,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:15,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164445023] [2024-11-28 04:16:15,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:15,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:15,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:15,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:15,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164445023] [2024-11-28 04:16:15,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164445023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:15,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:15,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:15,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363449673] [2024-11-28 04:16:15,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:15,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:16:15,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:15,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:16:15,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:15,350 INFO L87 Difference]: Start difference. First operand 3638 states and 5429 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:15,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:15,512 INFO L93 Difference]: Finished difference Result 7240 states and 10822 transitions. [2024-11-28 04:16:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:15,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-28 04:16:15,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:15,524 INFO L225 Difference]: With dead ends: 7240 [2024-11-28 04:16:15,524 INFO L226 Difference]: Without dead ends: 3638 [2024-11-28 04:16:15,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:15,529 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 339 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:15,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 82 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:15,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2024-11-28 04:16:15,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 3638. [2024-11-28 04:16:15,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.4751168545504536) internal successors, (5365), 3637 states have internal predecessors, (5365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:15,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5365 transitions. [2024-11-28 04:16:15,619 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5365 transitions. Word has length 67 [2024-11-28 04:16:15,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:15,620 INFO L471 AbstractCegarLoop]: Abstraction has 3638 states and 5365 transitions. [2024-11-28 04:16:15,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:15,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5365 transitions. [2024-11-28 04:16:15,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:16:15,620 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:15,620 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:15,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:16:15,621 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:15,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:15,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1242574363, now seen corresponding path program 1 times [2024-11-28 04:16:15,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:15,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656937680] [2024-11-28 04:16:15,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:15,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:15,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:15,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656937680] [2024-11-28 04:16:15,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656937680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:15,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:15,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:15,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001778886] [2024-11-28 04:16:15,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:15,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:16:15,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:15,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:16:15,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:15,780 INFO L87 Difference]: Start difference. First operand 3638 states and 5365 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:15,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:15,927 INFO L93 Difference]: Finished difference Result 7240 states and 10694 transitions. [2024-11-28 04:16:15,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:15,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-28 04:16:15,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:15,939 INFO L225 Difference]: With dead ends: 7240 [2024-11-28 04:16:15,939 INFO L226 Difference]: Without dead ends: 3638 [2024-11-28 04:16:15,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:15,944 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 284 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:15,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 114 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:15,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2024-11-28 04:16:16,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 3638. [2024-11-28 04:16:16,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.4619191641462743) internal successors, (5317), 3637 states have internal predecessors, (5317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:16,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5317 transitions. [2024-11-28 04:16:16,037 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5317 transitions. Word has length 67 [2024-11-28 04:16:16,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:16,037 INFO L471 AbstractCegarLoop]: Abstraction has 3638 states and 5317 transitions. [2024-11-28 04:16:16,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:16,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5317 transitions. [2024-11-28 04:16:16,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:16:16,038 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:16,039 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:16,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:16:16,039 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:16,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:16,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1771864864, now seen corresponding path program 1 times [2024-11-28 04:16:16,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:16,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390517289] [2024-11-28 04:16:16,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:16,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:16,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:16,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390517289] [2024-11-28 04:16:16,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390517289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:16,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:16,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:16:16,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992294109] [2024-11-28 04:16:16,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:16,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:16:16,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:16,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:16:16,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:16,195 INFO L87 Difference]: Start difference. First operand 3638 states and 5317 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:16,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:16,356 INFO L93 Difference]: Finished difference Result 7240 states and 10598 transitions. [2024-11-28 04:16:16,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:16,357 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-28 04:16:16,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:16,365 INFO L225 Difference]: With dead ends: 7240 [2024-11-28 04:16:16,365 INFO L226 Difference]: Without dead ends: 3638 [2024-11-28 04:16:16,368 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:16,369 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 307 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:16,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 98 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:16,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2024-11-28 04:16:16,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 3638. [2024-11-28 04:16:16,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3638 states, 3637 states have (on average 1.448721473742095) internal successors, (5269), 3637 states have internal predecessors, (5269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:16,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3638 states to 3638 states and 5269 transitions. [2024-11-28 04:16:16,442 INFO L78 Accepts]: Start accepts. Automaton has 3638 states and 5269 transitions. Word has length 67 [2024-11-28 04:16:16,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:16,442 INFO L471 AbstractCegarLoop]: Abstraction has 3638 states and 5269 transitions. [2024-11-28 04:16:16,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:16,442 INFO L276 IsEmpty]: Start isEmpty. Operand 3638 states and 5269 transitions. [2024-11-28 04:16:16,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:16:16,443 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:16,443 INFO L218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:16,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:16:16,445 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:16,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:16,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1643779557, now seen corresponding path program 1 times [2024-11-28 04:16:16,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:16,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000015116] [2024-11-28 04:16:16,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:16,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:16,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:16,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000015116] [2024-11-28 04:16:16,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000015116] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:16,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:16,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:16:16,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062891023] [2024-11-28 04:16:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:16,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:16:16,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:16,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:16:16,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:16,808 INFO L87 Difference]: Start difference. First operand 3638 states and 5269 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:16,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:16,855 INFO L93 Difference]: Finished difference Result 3768 states and 5462 transitions. [2024-11-28 04:16:16,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:16:16,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-28 04:16:16,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:16,864 INFO L225 Difference]: With dead ends: 3768 [2024-11-28 04:16:16,864 INFO L226 Difference]: Without dead ends: 3766 [2024-11-28 04:16:16,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:16:16,866 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 0 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:16,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 480 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:16:16,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2024-11-28 04:16:16,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3766. [2024-11-28 04:16:16,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3766 states, 3765 states have (on average 1.4292164674634795) internal successors, (5381), 3765 states have internal predecessors, (5381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3766 states to 3766 states and 5381 transitions. [2024-11-28 04:16:16,938 INFO L78 Accepts]: Start accepts. Automaton has 3766 states and 5381 transitions. Word has length 67 [2024-11-28 04:16:16,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:16,938 INFO L471 AbstractCegarLoop]: Abstraction has 3766 states and 5381 transitions. [2024-11-28 04:16:16,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:16,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3766 states and 5381 transitions. [2024-11-28 04:16:16,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:16:16,941 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:16,941 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:16,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:16:16,942 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:16,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:16,942 INFO L85 PathProgramCache]: Analyzing trace with hash 2083961666, now seen corresponding path program 1 times [2024-11-28 04:16:16,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:16,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80492483] [2024-11-28 04:16:16,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:16,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:17,207 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:16:17,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:17,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80492483] [2024-11-28 04:16:17,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80492483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:17,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:17,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:16:17,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338004303] [2024-11-28 04:16:17,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:17,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:16:17,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:17,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:16:17,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:17,210 INFO L87 Difference]: Start difference. First operand 3766 states and 5381 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:17,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:17,470 INFO L93 Difference]: Finished difference Result 23122 states and 33083 transitions. [2024-11-28 04:16:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:16:17,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 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 93 [2024-11-28 04:16:17,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:17,519 INFO L225 Difference]: With dead ends: 23122 [2024-11-28 04:16:17,519 INFO L226 Difference]: Without dead ends: 19392 [2024-11-28 04:16:17,529 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:16:17,530 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 787 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:17,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 872 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:17,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19392 states. [2024-11-28 04:16:17,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19392 to 7494. [2024-11-28 04:16:17,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7494 states, 7493 states have (on average 1.4249299346056319) internal successors, (10677), 7493 states have internal predecessors, (10677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:17,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7494 states to 7494 states and 10677 transitions. [2024-11-28 04:16:17,750 INFO L78 Accepts]: Start accepts. Automaton has 7494 states and 10677 transitions. Word has length 93 [2024-11-28 04:16:17,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:17,750 INFO L471 AbstractCegarLoop]: Abstraction has 7494 states and 10677 transitions. [2024-11-28 04:16:17,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:17,751 INFO L276 IsEmpty]: Start isEmpty. Operand 7494 states and 10677 transitions. [2024-11-28 04:16:17,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:16:17,753 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:17,753 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:17,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:16:17,754 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:17,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:17,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1513365710, now seen corresponding path program 1 times [2024-11-28 04:16:17,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:17,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787456091] [2024-11-28 04:16:17,754 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:17,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:16:17,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:17,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787456091] [2024-11-28 04:16:17,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787456091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:17,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:17,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:16:17,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912377271] [2024-11-28 04:16:17,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:17,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:16:17,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:17,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:16:18,000 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:18,000 INFO L87 Difference]: Start difference. First operand 7494 states and 10677 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:18,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:18,271 INFO L93 Difference]: Finished difference Result 26850 states and 38379 transitions. [2024-11-28 04:16:18,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:16:18,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-28 04:16:18,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:18,326 INFO L225 Difference]: With dead ends: 26850 [2024-11-28 04:16:18,326 INFO L226 Difference]: Without dead ends: 23120 [2024-11-28 04:16:18,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:16:18,333 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 840 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:18,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 853 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23120 states. [2024-11-28 04:16:18,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23120 to 13094. [2024-11-28 04:16:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13094 states, 13093 states have (on average 1.4191552738104332) internal successors, (18581), 13093 states have internal predecessors, (18581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:18,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13094 states to 13094 states and 18581 transitions. [2024-11-28 04:16:18,580 INFO L78 Accepts]: Start accepts. Automaton has 13094 states and 18581 transitions. Word has length 93 [2024-11-28 04:16:18,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:18,580 INFO L471 AbstractCegarLoop]: Abstraction has 13094 states and 18581 transitions. [2024-11-28 04:16:18,581 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:18,581 INFO L276 IsEmpty]: Start isEmpty. Operand 13094 states and 18581 transitions. [2024-11-28 04:16:18,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:16:18,584 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:18,584 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:18,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:16:18,584 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:18,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash 359419604, now seen corresponding path program 1 times [2024-11-28 04:16:18,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:18,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148671840] [2024-11-28 04:16:18,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:18,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:18,804 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 04:16:18,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:18,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148671840] [2024-11-28 04:16:18,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148671840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:18,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:18,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:16:18,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142987424] [2024-11-28 04:16:18,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:18,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:16:18,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:18,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:16:18,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:18,807 INFO L87 Difference]: Start difference. First operand 13094 states and 18581 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:19,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:19,122 INFO L93 Difference]: Finished difference Result 30578 states and 43675 transitions. [2024-11-28 04:16:19,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:16:19,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-28 04:16:19,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:19,176 INFO L225 Difference]: With dead ends: 30578 [2024-11-28 04:16:19,177 INFO L226 Difference]: Without dead ends: 26848 [2024-11-28 04:16:19,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:16:19,184 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 781 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 781 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:19,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [781 Valid, 890 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:19,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26848 states. [2024-11-28 04:16:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26848 to 16822. [2024-11-28 04:16:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16822 states, 16821 states have (on average 1.4194756554307115) internal successors, (23877), 16821 states have internal predecessors, (23877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:19,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16822 states to 16822 states and 23877 transitions. [2024-11-28 04:16:19,440 INFO L78 Accepts]: Start accepts. Automaton has 16822 states and 23877 transitions. Word has length 93 [2024-11-28 04:16:19,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:19,440 INFO L471 AbstractCegarLoop]: Abstraction has 16822 states and 23877 transitions. [2024-11-28 04:16:19,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 16822 states and 23877 transitions. [2024-11-28 04:16:19,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:16:19,444 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:19,444 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:19,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:16:19,444 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:19,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:19,445 INFO L85 PathProgramCache]: Analyzing trace with hash 655465032, now seen corresponding path program 1 times [2024-11-28 04:16:19,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:19,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995950896] [2024-11-28 04:16:19,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:19,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:19,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:16:19,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:19,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995950896] [2024-11-28 04:16:19,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995950896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:19,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:19,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:16:19,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320889647] [2024-11-28 04:16:19,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:19,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:16:19,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:19,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:16:19,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:19,704 INFO L87 Difference]: Start difference. First operand 16822 states and 23877 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:19,983 INFO L93 Difference]: Finished difference Result 34306 states and 48971 transitions. [2024-11-28 04:16:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:16:19,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-28 04:16:19,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:20,057 INFO L225 Difference]: With dead ends: 34306 [2024-11-28 04:16:20,057 INFO L226 Difference]: Without dead ends: 30576 [2024-11-28 04:16:20,069 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:16:20,069 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 722 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:20,070 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 994 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:20,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30576 states. [2024-11-28 04:16:20,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30576 to 20550. [2024-11-28 04:16:20,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20550 states, 20549 states have (on average 1.4196797897707918) internal successors, (29173), 20549 states have internal predecessors, (29173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:20,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20550 states to 20550 states and 29173 transitions. [2024-11-28 04:16:20,507 INFO L78 Accepts]: Start accepts. Automaton has 20550 states and 29173 transitions. Word has length 93 [2024-11-28 04:16:20,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:20,508 INFO L471 AbstractCegarLoop]: Abstraction has 20550 states and 29173 transitions. [2024-11-28 04:16:20,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:20,508 INFO L276 IsEmpty]: Start isEmpty. Operand 20550 states and 29173 transitions. [2024-11-28 04:16:20,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-28 04:16:20,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:20,513 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:20,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:16:20,513 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:20,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:20,514 INFO L85 PathProgramCache]: Analyzing trace with hash -235568196, now seen corresponding path program 1 times [2024-11-28 04:16:20,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:20,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598577795] [2024-11-28 04:16:20,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:20,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:16:20,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:20,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598577795] [2024-11-28 04:16:20,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598577795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:16:20,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:16:20,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:16:20,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038643461] [2024-11-28 04:16:20,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:16:20,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:16:20,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:20,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:16:20,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:16:20,829 INFO L87 Difference]: Start difference. First operand 20550 states and 29173 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:21,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:21,147 INFO L93 Difference]: Finished difference Result 35698 states and 51003 transitions. [2024-11-28 04:16:21,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:16:21,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-11-28 04:16:21,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:21,233 INFO L225 Difference]: With dead ends: 35698 [2024-11-28 04:16:21,233 INFO L226 Difference]: Without dead ends: 33136 [2024-11-28 04:16:21,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:16:21,246 INFO L435 NwaCegarLoop]: 209 mSDtfsCounter, 786 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:21,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1016 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:16:21,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33136 states. [2024-11-28 04:16:21,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33136 to 23110. [2024-11-28 04:16:21,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23110 states, 23109 states have (on average 1.4216539010775022) internal successors, (32853), 23109 states have internal predecessors, (32853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:21,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23110 states to 23110 states and 32853 transitions. [2024-11-28 04:16:21,896 INFO L78 Accepts]: Start accepts. Automaton has 23110 states and 32853 transitions. Word has length 93 [2024-11-28 04:16:21,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:21,896 INFO L471 AbstractCegarLoop]: Abstraction has 23110 states and 32853 transitions. [2024-11-28 04:16:21,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:21,897 INFO L276 IsEmpty]: Start isEmpty. Operand 23110 states and 32853 transitions. [2024-11-28 04:16:21,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 04:16:21,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:21,901 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:21,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:16:21,901 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:21,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:21,901 INFO L85 PathProgramCache]: Analyzing trace with hash -2095026606, now seen corresponding path program 1 times [2024-11-28 04:16:21,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:21,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75491624] [2024-11-28 04:16:21,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:21,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:22,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:22,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75491624] [2024-11-28 04:16:22,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75491624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:22,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556619630] [2024-11-28 04:16:22,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:22,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:22,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:22,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:22,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:16:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:22,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:16:22,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:23,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:25,177 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:25,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556619630] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:16:25,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:16:25,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-28 04:16:25,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007633038] [2024-11-28 04:16:25,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:16:25,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:16:25,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:25,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:16:25,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:16:25,180 INFO L87 Difference]: Start difference. First operand 23110 states and 32853 transitions. Second operand has 26 states, 26 states have (on average 9.846153846153847) internal successors, (256), 25 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:32,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:32,751 INFO L93 Difference]: Finished difference Result 199476 states and 281826 transitions. [2024-11-28 04:16:32,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-11-28 04:16:32,752 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.846153846153847) internal successors, (256), 25 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-28 04:16:32,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:33,179 INFO L225 Difference]: With dead ends: 199476 [2024-11-28 04:16:33,179 INFO L226 Difference]: Without dead ends: 176402 [2024-11-28 04:16:33,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4866 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=2592, Invalid=12414, Unknown=0, NotChecked=0, Total=15006 [2024-11-28 04:16:33,231 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 2800 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 2750 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2800 SdHoareTripleChecker+Valid, 1515 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:33,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2800 Valid, 1515 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2750 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 04:16:33,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176402 states. [2024-11-28 04:16:35,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176402 to 115244. [2024-11-28 04:16:35,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115244 states, 115243 states have (on average 1.4107668144702932) internal successors, (162581), 115243 states have internal predecessors, (162581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:35,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115244 states to 115244 states and 162581 transitions. [2024-11-28 04:16:35,542 INFO L78 Accepts]: Start accepts. Automaton has 115244 states and 162581 transitions. Word has length 94 [2024-11-28 04:16:35,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:16:35,543 INFO L471 AbstractCegarLoop]: Abstraction has 115244 states and 162581 transitions. [2024-11-28 04:16:35,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.846153846153847) internal successors, (256), 25 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:35,543 INFO L276 IsEmpty]: Start isEmpty. Operand 115244 states and 162581 transitions. [2024-11-28 04:16:35,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 04:16:35,553 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:16:35,553 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:16:35,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:16:35,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:16:35,758 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:16:35,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:16:35,758 INFO L85 PathProgramCache]: Analyzing trace with hash -582154298, now seen corresponding path program 1 times [2024-11-28 04:16:35,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:16:35,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831524840] [2024-11-28 04:16:35,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:35,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:16:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:36,450 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:36,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:16:36,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831524840] [2024-11-28 04:16:36,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831524840] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:16:36,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277981185] [2024-11-28 04:16:36,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:16:36,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:16:36,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:16:36,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:16:36,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:16:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:16:36,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:16:36,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:16:37,300 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:37,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:16:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:16:38,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277981185] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:16:38,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:16:38,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 29 [2024-11-28 04:16:38,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102115567] [2024-11-28 04:16:38,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:16:38,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 04:16:38,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:16:38,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 04:16:38,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2024-11-28 04:16:38,294 INFO L87 Difference]: Start difference. First operand 115244 states and 162581 transitions. Second operand has 30 states, 30 states have (on average 8.766666666666667) internal successors, (263), 29 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:16:51,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:16:51,530 INFO L93 Difference]: Finished difference Result 1555123 states and 2156577 transitions. [2024-11-28 04:16:51,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2024-11-28 04:16:51,531 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.766666666666667) internal successors, (263), 29 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2024-11-28 04:16:51,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:16:54,193 INFO L225 Difference]: With dead ends: 1555123 [2024-11-28 04:16:54,193 INFO L226 Difference]: Without dead ends: 1439915 [2024-11-28 04:16:54,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12089 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=4638, Invalid=27942, Unknown=0, NotChecked=0, Total=32580 [2024-11-28 04:16:54,385 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 5126 mSDsluCounter, 1986 mSDsCounter, 0 mSdLazyCounter, 4146 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5126 SdHoareTripleChecker+Valid, 2103 SdHoareTripleChecker+Invalid, 4203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 4146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:16:54,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5126 Valid, 2103 Invalid, 4203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 4146 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 04:16:55,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439915 states. [2024-11-28 04:17:06,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439915 to 607109. [2024-11-28 04:17:07,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607109 states, 607108 states have (on average 1.3882192295275306) internal successors, (842799), 607108 states have internal predecessors, (842799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:17:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607109 states to 607109 states and 842799 transitions. [2024-11-28 04:17:08,967 INFO L78 Accepts]: Start accepts. Automaton has 607109 states and 842799 transitions. Word has length 95 [2024-11-28 04:17:08,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:17:08,967 INFO L471 AbstractCegarLoop]: Abstraction has 607109 states and 842799 transitions. [2024-11-28 04:17:08,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 8.766666666666667) internal successors, (263), 29 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:17:08,972 INFO L276 IsEmpty]: Start isEmpty. Operand 607109 states and 842799 transitions. [2024-11-28 04:17:09,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:17:09,035 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:17:09,036 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:17:09,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:17:09,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad191915-5e15-4222-968e-87640b3e0961/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:17:09,236 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:17:09,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:17:09,237 INFO L85 PathProgramCache]: Analyzing trace with hash 973824016, now seen corresponding path program 1 times [2024-11-28 04:17:09,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:17:09,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190997621] [2024-11-28 04:17:09,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:17:09,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:17:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:17:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:17:09,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:17:09,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190997621] [2024-11-28 04:17:09,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190997621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:17:09,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:17:09,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:17:09,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105427023] [2024-11-28 04:17:09,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:17:09,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:17:09,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:17:09,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:17:09,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:17:09,356 INFO L87 Difference]: Start difference. First operand 607109 states and 842799 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:17:14,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:17:14,632 INFO L93 Difference]: Finished difference Result 1116961 states and 1553276 transitions. [2024-11-28 04:17:14,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:17:14,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2024-11-28 04:17:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:17:15,330 INFO L225 Difference]: With dead ends: 1116961 [2024-11-28 04:17:15,330 INFO L226 Difference]: Without dead ends: 509888 [2024-11-28 04:17:15,537 INFO L434 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 [2024-11-28 04:17:15,540 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 75 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:17:15,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 152 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:17:15,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509888 states.