./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/min-2-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/min-2-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68785685c781649dca8a870a36ccbd5837fb99f65c0418361b1a73f7848e1bda --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:13:00,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:13:00,565 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:13:00,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:13:00,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:13:00,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:13:00,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:13:00,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:13:00,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:13:00,617 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:13:00,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:13:00,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:13:00,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:13:00,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:13:00,619 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:13:00,619 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:13:00,620 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:13:00,621 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:13:00,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:13:00,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:13:00,621 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:13:00,621 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:13:00,621 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:13:00,621 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:13:00,621 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:13:00,622 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:13:00,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:13:00,622 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:13:00,622 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:13:00,622 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:13:00,622 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:13:00,622 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:13:00,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:13:00,623 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:13:00,623 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:13:00,623 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:13:00,623 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:13:00,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:13:00,623 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:13:00,623 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:13:00,623 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:13:00,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:13:00,623 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_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68785685c781649dca8a870a36ccbd5837fb99f65c0418361b1a73f7848e1bda [2024-11-13 13:13:01,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:13:01,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:13:01,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:13:01,076 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:13:01,076 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:13:01,078 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-multidimensional/min-2-u.c Unable to find full path for "g++" [2024-11-13 13:13:03,416 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:13:03,730 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:13:03,733 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/sv-benchmarks/c/array-multidimensional/min-2-u.c [2024-11-13 13:13:03,744 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/data/c45cc42a5/caf48cea5a2843c1bc6fa98dd7031c09/FLAG740791aa4 [2024-11-13 13:13:03,999 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/data/c45cc42a5/caf48cea5a2843c1bc6fa98dd7031c09 [2024-11-13 13:13:04,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:13:04,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:13:04,008 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:13:04,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:13:04,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:13:04,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:13:04" (1/1) ... [2024-11-13 13:13:04,018 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51cb114c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04, skipping insertion in model container [2024-11-13 13:13:04,018 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:13:04" (1/1) ... [2024-11-13 13:13:04,039 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:13:04,242 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_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/sv-benchmarks/c/array-multidimensional/min-2-u.c[319,332] [2024-11-13 13:13:04,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:13:04,290 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:13:04,305 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_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/sv-benchmarks/c/array-multidimensional/min-2-u.c[319,332] [2024-11-13 13:13:04,322 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:13:04,343 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:13:04,344 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04 WrapperNode [2024-11-13 13:13:04,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:13:04,348 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:13:04,348 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:13:04,348 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:13:04,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04" (1/1) ... [2024-11-13 13:13:04,371 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04" (1/1) ... [2024-11-13 13:13:04,399 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2024-11-13 13:13:04,400 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:13:04,401 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:13:04,402 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:13:04,402 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:13:04,412 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04" (1/1) ... [2024-11-13 13:13:04,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04" (1/1) ... [2024-11-13 13:13:04,415 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04" (1/1) ... [2024-11-13 13:13:04,438 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 13:13:04,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04" (1/1) ... [2024-11-13 13:13:04,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04" (1/1) ... [2024-11-13 13:13:04,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04" (1/1) ... [2024-11-13 13:13:04,447 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04" (1/1) ... [2024-11-13 13:13:04,448 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04" (1/1) ... [2024-11-13 13:13:04,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04" (1/1) ... [2024-11-13 13:13:04,451 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:13:04,452 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:13:04,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:13:04,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:13:04,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04" (1/1) ... [2024-11-13 13:13:04,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:13:04,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:04,499 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:13:04,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:13:04,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:13:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:13:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:13:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 13:13:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:13:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:13:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:13:04,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:13:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:13:04,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:13:04,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 13:13:04,626 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:13:04,628 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:13:04,830 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-13 13:13:04,830 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:13:04,840 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:13:04,840 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-13 13:13:04,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:04 BoogieIcfgContainer [2024-11-13 13:13:04,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:13:04,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:13:04,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:13:04,850 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:13:04,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:13:04" (1/3) ... [2024-11-13 13:13:04,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a56d857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:13:04, skipping insertion in model container [2024-11-13 13:13:04,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:04" (2/3) ... [2024-11-13 13:13:04,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a56d857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:13:04, skipping insertion in model container [2024-11-13 13:13:04,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:04" (3/3) ... [2024-11-13 13:13:04,853 INFO L112 eAbstractionObserver]: Analyzing ICFG min-2-u.c [2024-11-13 13:13:04,877 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:13:04,879 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG min-2-u.c that has 1 procedures, 23 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-13 13:13:04,960 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:13:04,978 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;@2b75aa44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:13:04,978 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:13:04,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:04,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 13:13:04,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:04,992 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:04,993 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:04,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:04,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1783237736, now seen corresponding path program 1 times [2024-11-13 13:13:05,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:05,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605319756] [2024-11-13 13:13:05,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:05,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:05,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:05,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:05,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:05,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605319756] [2024-11-13 13:13:05,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605319756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:05,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:05,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:13:05,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803610069] [2024-11-13 13:13:05,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:05,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:13:05,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:05,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:13:05,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:13:05,399 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:05,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:05,495 INFO L93 Difference]: Finished difference Result 47 states and 77 transitions. [2024-11-13 13:13:05,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:13:05,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-13 13:13:05,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:05,506 INFO L225 Difference]: With dead ends: 47 [2024-11-13 13:13:05,506 INFO L226 Difference]: Without dead ends: 22 [2024-11-13 13:13:05,509 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:13:05,513 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:05,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:13:05,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-13 13:13:05,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-13 13:13:05,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:05,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2024-11-13 13:13:05,548 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 10 [2024-11-13 13:13:05,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:05,550 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2024-11-13 13:13:05,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:05,551 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2024-11-13 13:13:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 13:13:05,552 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:05,552 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:05,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:13:05,553 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:05,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:05,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1661923646, now seen corresponding path program 1 times [2024-11-13 13:13:05,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:05,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966360087] [2024-11-13 13:13:05,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:05,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:05,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:05,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966360087] [2024-11-13 13:13:05,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966360087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:05,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:05,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:13:05,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846735404] [2024-11-13 13:13:05,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:05,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:05,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:05,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:05,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:05,756 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:05,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:05,849 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2024-11-13 13:13:05,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:05,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 13:13:05,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:05,851 INFO L225 Difference]: With dead ends: 46 [2024-11-13 13:13:05,851 INFO L226 Difference]: Without dead ends: 29 [2024-11-13 13:13:05,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:05,853 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:05,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 25 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:13:05,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-13 13:13:05,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2024-11-13 13:13:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2024-11-13 13:13:05,865 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 13 [2024-11-13 13:13:05,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:05,866 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2024-11-13 13:13:05,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:05,866 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2024-11-13 13:13:05,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 13:13:05,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:05,868 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:05,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:13:05,869 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:05,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:05,870 INFO L85 PathProgramCache]: Analyzing trace with hash -693666458, now seen corresponding path program 1 times [2024-11-13 13:13:05,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:05,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944575158] [2024-11-13 13:13:05,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:05,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:06,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:13:06,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:06,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944575158] [2024-11-13 13:13:06,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944575158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:06,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:06,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 13:13:06,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176290575] [2024-11-13 13:13:06,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:06,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:06,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:06,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:06,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:06,060 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:06,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:06,162 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2024-11-13 13:13:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:06,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 13:13:06,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:06,163 INFO L225 Difference]: With dead ends: 49 [2024-11-13 13:13:06,163 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 13:13:06,164 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:06,165 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 48 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:06,165 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 18 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:13:06,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 13:13:06,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 24. [2024-11-13 13:13:06,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 23 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2024-11-13 13:13:06,172 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 14 [2024-11-13 13:13:06,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:06,172 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2024-11-13 13:13:06,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:06,173 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2024-11-13 13:13:06,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 13:13:06,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:06,173 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:06,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:13:06,174 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:06,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:06,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1235077727, now seen corresponding path program 1 times [2024-11-13 13:13:06,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:06,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377502802] [2024-11-13 13:13:06,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:06,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:06,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:13:06,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:06,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377502802] [2024-11-13 13:13:06,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377502802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:06,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761071736] [2024-11-13 13:13:06,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:06,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:06,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:06,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:06,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:13:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:06,477 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:13:06,483 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:06,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:13:06,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:13:06,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761071736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:06,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:06,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-13 13:13:06,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420662167] [2024-11-13 13:13:06,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:06,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:13:06,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:06,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:13:06,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:13:06,642 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:06,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:06,836 INFO L93 Difference]: Finished difference Result 72 states and 96 transitions. [2024-11-13 13:13:06,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:13:06,837 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 13:13:06,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:06,837 INFO L225 Difference]: With dead ends: 72 [2024-11-13 13:13:06,838 INFO L226 Difference]: Without dead ends: 51 [2024-11-13 13:13:06,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:13:06,839 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 103 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:06,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 49 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:13:06,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-13 13:13:06,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2024-11-13 13:13:06,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:06,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-13 13:13:06,855 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 20 [2024-11-13 13:13:06,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:06,855 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-13 13:13:06,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:06,856 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-13 13:13:06,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-13 13:13:06,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:06,857 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:06,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:13:07,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:07,058 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:07,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:07,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1176173101, now seen corresponding path program 2 times [2024-11-13 13:13:07,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:07,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445750219] [2024-11-13 13:13:07,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 13:13:07,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:07,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445750219] [2024-11-13 13:13:07,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445750219] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:07,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137360305] [2024-11-13 13:13:07,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:13:07,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:07,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:07,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:07,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:13:07,504 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:13:07,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:07,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:13:07,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 13:13:07,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:07,744 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-13 13:13:07,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137360305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:07,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:07,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-13 13:13:07,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094318835] [2024-11-13 13:13:07,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:07,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 13:13:07,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:07,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 13:13:07,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-13 13:13:07,747 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:08,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:08,095 INFO L93 Difference]: Finished difference Result 147 states and 192 transitions. [2024-11-13 13:13:08,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:13:08,098 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2024-11-13 13:13:08,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:08,099 INFO L225 Difference]: With dead ends: 147 [2024-11-13 13:13:08,099 INFO L226 Difference]: Without dead ends: 105 [2024-11-13 13:13:08,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-13 13:13:08,101 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 206 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:08,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 101 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:13:08,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-13 13:13:08,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2024-11-13 13:13:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 86 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:08,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2024-11-13 13:13:08,127 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 111 transitions. Word has length 32 [2024-11-13 13:13:08,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:08,128 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 111 transitions. [2024-11-13 13:13:08,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:08,129 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 111 transitions. [2024-11-13 13:13:08,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-13 13:13:08,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:08,130 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:08,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:13:08,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:08,331 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:08,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:08,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1207721299, now seen corresponding path program 3 times [2024-11-13 13:13:08,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:08,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012216153] [2024-11-13 13:13:08,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:08,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-13 13:13:08,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:08,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012216153] [2024-11-13 13:13:08,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012216153] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:08,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081001182] [2024-11-13 13:13:08,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:13:08,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:08,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:08,959 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:08,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:13:09,090 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 13:13:09,090 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:09,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:13:09,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-13 13:13:09,411 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:09,605 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-11-13 13:13:09,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081001182] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:09,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:09,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2024-11-13 13:13:09,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964025689] [2024-11-13 13:13:09,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:09,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 13:13:09,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:09,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 13:13:09,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2024-11-13 13:13:09,608 INFO L87 Difference]: Start difference. First operand 87 states and 111 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:12,117 INFO L93 Difference]: Finished difference Result 560 states and 666 transitions. [2024-11-13 13:13:12,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-13 13:13:12,118 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-13 13:13:12,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:12,126 INFO L225 Difference]: With dead ends: 560 [2024-11-13 13:13:12,126 INFO L226 Difference]: Without dead ends: 476 [2024-11-13 13:13:12,133 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1695 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1772, Invalid=3778, Unknown=0, NotChecked=0, Total=5550 [2024-11-13 13:13:12,134 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 1606 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:12,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 80 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:13:12,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-11-13 13:13:12,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 202. [2024-11-13 13:13:12,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.3134328358208955) internal successors, (264), 201 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:12,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 264 transitions. [2024-11-13 13:13:12,210 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 264 transitions. Word has length 56 [2024-11-13 13:13:12,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:12,210 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 264 transitions. [2024-11-13 13:13:12,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 19 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:12,210 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 264 transitions. [2024-11-13 13:13:12,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-13 13:13:12,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:12,216 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:12,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:13:12,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:12,421 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:12,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:12,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2017738806, now seen corresponding path program 4 times [2024-11-13 13:13:12,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:12,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210704210] [2024-11-13 13:13:12,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:12,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 3036 trivial. 0 not checked. [2024-11-13 13:13:13,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210704210] [2024-11-13 13:13:13,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210704210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248781913] [2024-11-13 13:13:13,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:13:13,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:13,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:13,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:13,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:13:13,649 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:13:13,649 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:13,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 13:13:13,669 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:14,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 145 proven. 2363 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-11-13 13:13:14,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3103 backedges. 145 proven. 2363 refuted. 0 times theorem prover too weak. 595 trivial. 0 not checked. [2024-11-13 13:13:15,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248781913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:15,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:15,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 19] total 49 [2024-11-13 13:13:15,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241940999] [2024-11-13 13:13:15,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:15,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-13 13:13:15,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:15,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-13 13:13:15,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=1895, Unknown=0, NotChecked=0, Total=2352 [2024-11-13 13:13:15,866 INFO L87 Difference]: Start difference. First operand 202 states and 264 transitions. Second operand has 49 states, 49 states have (on average 3.020408163265306) internal successors, (148), 49 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:25,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:13:25,897 INFO L93 Difference]: Finished difference Result 1573 states and 1865 transitions. [2024-11-13 13:13:25,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2024-11-13 13:13:25,898 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.020408163265306) internal successors, (148), 49 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 168 [2024-11-13 13:13:25,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:13:25,906 INFO L225 Difference]: With dead ends: 1573 [2024-11-13 13:13:25,906 INFO L226 Difference]: Without dead ends: 1374 [2024-11-13 13:13:25,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 658 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16287 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=9701, Invalid=33771, Unknown=0, NotChecked=0, Total=43472 [2024-11-13 13:13:25,927 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 6702 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1038 mSolverCounterSat, 1059 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6702 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 2097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1059 IncrementalHoareTripleChecker+Valid, 1038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:13:25,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6702 Valid, 562 Invalid, 2097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1059 Valid, 1038 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 13:13:25,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2024-11-13 13:13:25,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 491. [2024-11-13 13:13:25,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 490 states have (on average 1.3244897959183672) internal successors, (649), 490 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 649 transitions. [2024-11-13 13:13:25,995 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 649 transitions. Word has length 168 [2024-11-13 13:13:25,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:13:25,995 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 649 transitions. [2024-11-13 13:13:25,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.020408163265306) internal successors, (148), 49 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:25,996 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 649 transitions. [2024-11-13 13:13:26,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2024-11-13 13:13:26,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:13:26,007 INFO L215 NwaCegarLoop]: trace histogram [132, 132, 132, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:26,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 13:13:26,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:26,208 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:13:26,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:26,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1229273459, now seen corresponding path program 5 times [2024-11-13 13:13:26,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:26,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589985192] [2024-11-13 13:13:26,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:26,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:28,152 INFO L134 CoverageAnalysis]: Checked inductivity of 27645 backedges. 1 proven. 78 refuted. 0 times theorem prover too weak. 27566 trivial. 0 not checked. [2024-11-13 13:13:28,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:28,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589985192] [2024-11-13 13:13:28,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589985192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:28,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529758623] [2024-11-13 13:13:28,154 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:13:28,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:28,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:28,157 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:28,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:14:36,378 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 117 check-sat command(s) [2024-11-13 13:14:36,378 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:14:36,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 1302 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 13:14:36,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 27645 backedges. 11927 proven. 210 refuted. 0 times theorem prover too weak. 15508 trivial. 0 not checked. [2024-11-13 13:14:37,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:37,741 INFO L134 CoverageAnalysis]: Checked inductivity of 27645 backedges. 11013 proven. 1124 refuted. 0 times theorem prover too weak. 15508 trivial. 0 not checked. [2024-11-13 13:14:37,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529758623] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:37,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:37,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 43 [2024-11-13 13:14:37,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432919326] [2024-11-13 13:14:37,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:37,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-13 13:14:37,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:37,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-13 13:14:37,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=1019, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 13:14:37,745 INFO L87 Difference]: Start difference. First operand 491 states and 649 transitions. Second operand has 43 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 43 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:38,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:38,625 INFO L93 Difference]: Finished difference Result 1547 states and 2188 transitions. [2024-11-13 13:14:38,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 13:14:38,625 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 43 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 454 [2024-11-13 13:14:38,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:38,651 INFO L225 Difference]: With dead ends: 1547 [2024-11-13 13:14:38,651 INFO L226 Difference]: Without dead ends: 1059 [2024-11-13 13:14:38,653 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 935 GetRequests, 881 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1190, Invalid=1890, Unknown=0, NotChecked=0, Total=3080 [2024-11-13 13:14:38,655 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 532 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:38,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 170 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:14:38,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2024-11-13 13:14:38,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 1009. [2024-11-13 13:14:38,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 1008 states have (on average 1.3244047619047619) internal successors, (1335), 1008 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:38,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1335 transitions. [2024-11-13 13:14:38,765 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1335 transitions. Word has length 454 [2024-11-13 13:14:38,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:38,766 INFO L471 AbstractCegarLoop]: Abstraction has 1009 states and 1335 transitions. [2024-11-13 13:14:38,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.0697674418604652) internal successors, (132), 43 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:38,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1335 transitions. [2024-11-13 13:14:38,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 931 [2024-11-13 13:14:38,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:38,803 INFO L215 NwaCegarLoop]: trace histogram [286, 286, 286, 26, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:38,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:14:39,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:39,004 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:39,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:39,005 INFO L85 PathProgramCache]: Analyzing trace with hash 743594163, now seen corresponding path program 6 times [2024-11-13 13:14:39,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:39,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769577791] [2024-11-13 13:14:39,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:39,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:14:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 125939 backedges. 1 proven. 351 refuted. 0 times theorem prover too weak. 125587 trivial. 0 not checked. [2024-11-13 13:14:45,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:14:45,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769577791] [2024-11-13 13:14:45,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769577791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:14:45,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456236344] [2024-11-13 13:14:45,341 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:14:45,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:45,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:14:45,344 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:14:45,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:14:45,724 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 13:14:45,724 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:14:45,728 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:14:45,751 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:14:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 125939 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 125938 trivial. 0 not checked. [2024-11-13 13:14:45,947 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:14:46,132 INFO L134 CoverageAnalysis]: Checked inductivity of 125939 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 125938 trivial. 0 not checked. [2024-11-13 13:14:46,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456236344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:14:46,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:14:46,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 4, 4] total 34 [2024-11-13 13:14:46,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273745166] [2024-11-13 13:14:46,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:14:46,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 13:14:46,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:14:46,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 13:14:46,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=699, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 13:14:46,136 INFO L87 Difference]: Start difference. First operand 1009 states and 1335 transitions. Second operand has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:53,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:14:53,694 INFO L93 Difference]: Finished difference Result 2220 states and 2891 transitions. [2024-11-13 13:14:53,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2024-11-13 13:14:53,694 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 930 [2024-11-13 13:14:53,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:14:53,701 INFO L225 Difference]: With dead ends: 2220 [2024-11-13 13:14:53,701 INFO L226 Difference]: Without dead ends: 1214 [2024-11-13 13:14:53,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2026 GetRequests, 1856 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9771 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=8787, Invalid=20625, Unknown=0, NotChecked=0, Total=29412 [2024-11-13 13:14:53,709 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 1084 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:14:53,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 147 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 13:14:53,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2024-11-13 13:14:53,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1136. [2024-11-13 13:14:53,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 1135 states have (on average 1.3013215859030838) internal successors, (1477), 1135 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:53,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1477 transitions. [2024-11-13 13:14:53,843 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1477 transitions. Word has length 930 [2024-11-13 13:14:53,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:14:53,843 INFO L471 AbstractCegarLoop]: Abstraction has 1136 states and 1477 transitions. [2024-11-13 13:14:53,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 34 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:14:53,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1477 transitions. [2024-11-13 13:14:53,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1055 [2024-11-13 13:14:53,856 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:14:53,856 INFO L215 NwaCegarLoop]: trace histogram [297, 297, 297, 108, 11, 11, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:14:53,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 13:14:54,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:14:54,058 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:14:54,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:14:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1776272899, now seen corresponding path program 7 times [2024-11-13 13:14:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:14:54,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218592203] [2024-11-13 13:14:54,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:14:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:14:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 141543 backedges. 2356 proven. 378 refuted. 0 times theorem prover too weak. 138809 trivial. 0 not checked. [2024-11-13 13:15:00,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:00,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218592203] [2024-11-13 13:15:00,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218592203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:15:00,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583631942] [2024-11-13 13:15:00,752 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:15:00,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:15:00,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:15:00,754 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:15:00,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:15:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:01,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 3504 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 13:15:01,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:15:02,290 INFO L134 CoverageAnalysis]: Checked inductivity of 141543 backedges. 2356 proven. 378 refuted. 0 times theorem prover too weak. 138809 trivial. 0 not checked. [2024-11-13 13:15:02,290 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:15:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 141543 backedges. 2356 proven. 378 refuted. 0 times theorem prover too weak. 138809 trivial. 0 not checked. [2024-11-13 13:15:03,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583631942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:15:03,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:15:03,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 88 [2024-11-13 13:15:03,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396825220] [2024-11-13 13:15:03,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:15:03,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2024-11-13 13:15:03,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:03,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2024-11-13 13:15:03,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3367, Invalid=4289, Unknown=0, NotChecked=0, Total=7656 [2024-11-13 13:15:03,594 INFO L87 Difference]: Start difference. First operand 1136 states and 1477 transitions. Second operand has 88 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 88 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:06,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:06,916 INFO L93 Difference]: Finished difference Result 3511 states and 4949 transitions. [2024-11-13 13:15:06,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-13 13:15:06,916 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 88 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1054 [2024-11-13 13:15:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:06,927 INFO L225 Difference]: With dead ends: 3511 [2024-11-13 13:15:06,928 INFO L226 Difference]: Without dead ends: 2406 [2024-11-13 13:15:06,932 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2165 GetRequests, 2051 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4757 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=5075, Invalid=8265, Unknown=0, NotChecked=0, Total=13340 [2024-11-13 13:15:06,932 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 2242 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:06,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2242 Valid, 346 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 13:15:06,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2024-11-13 13:15:07,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 2296. [2024-11-13 13:15:07,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 2295 states have (on average 1.3006535947712419) internal successors, (2985), 2295 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:07,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 2985 transitions. [2024-11-13 13:15:07,200 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 2985 transitions. Word has length 1054 [2024-11-13 13:15:07,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:07,201 INFO L471 AbstractCegarLoop]: Abstraction has 2296 states and 2985 transitions. [2024-11-13 13:15:07,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 88 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:07,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 2985 transitions. [2024-11-13 13:15:07,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2128 [2024-11-13 13:15:07,226 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:07,226 INFO L215 NwaCegarLoop]: trace histogram [616, 616, 616, 224, 11, 11, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:07,247 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:15:07,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 13:15:07,427 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:07,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:07,428 INFO L85 PathProgramCache]: Analyzing trace with hash -931755939, now seen corresponding path program 8 times [2024-11-13 13:15:07,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:07,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508987003] [2024-11-13 13:15:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:07,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:15:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:15:27,979 INFO L134 CoverageAnalysis]: Checked inductivity of 601106 backedges. 9751 proven. 1596 refuted. 0 times theorem prover too weak. 589759 trivial. 0 not checked. [2024-11-13 13:15:27,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:15:27,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508987003] [2024-11-13 13:15:27,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508987003] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:15:27,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337463177] [2024-11-13 13:15:27,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:15:27,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:15:27,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:15:27,983 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:15:27,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:15:30,098 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:15:30,098 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:15:30,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 7100 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 13:15:30,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:15:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 601106 backedges. 9751 proven. 1596 refuted. 0 times theorem prover too weak. 589759 trivial. 0 not checked. [2024-11-13 13:15:32,871 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:15:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 601106 backedges. 9751 proven. 1596 refuted. 0 times theorem prover too weak. 589759 trivial. 0 not checked. [2024-11-13 13:15:39,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337463177] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:15:39,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:15:39,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 175 [2024-11-13 13:15:39,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305916994] [2024-11-13 13:15:39,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:15:39,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 175 states [2024-11-13 13:15:39,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:15:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 175 interpolants. [2024-11-13 13:15:39,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13459, Invalid=16991, Unknown=0, NotChecked=0, Total=30450 [2024-11-13 13:15:39,207 INFO L87 Difference]: Start difference. First operand 2296 states and 2985 transitions. Second operand has 175 states, 175 states have (on average 1.1142857142857143) internal successors, (195), 175 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:58,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:15:58,735 INFO L93 Difference]: Finished difference Result 7078 states and 9966 transitions. [2024-11-13 13:15:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2024-11-13 13:15:58,736 INFO L78 Accepts]: Start accepts. Automaton has has 175 states, 175 states have (on average 1.1142857142857143) internal successors, (195), 175 states have internal predecessors, (195), 0 states have call successors, (0), 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 2127 [2024-11-13 13:15:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:15:58,759 INFO L225 Difference]: With dead ends: 7078 [2024-11-13 13:15:58,759 INFO L226 Difference]: Without dead ends: 4842 [2024-11-13 13:15:58,767 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4369 GetRequests, 4139 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19605 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=20242, Invalid=33350, Unknown=0, NotChecked=0, Total=53592 [2024-11-13 13:15:58,768 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 4067 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 1111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4067 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 2003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1111 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:15:58,768 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4067 Valid, 618 Invalid, 2003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1111 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-13 13:15:58,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4842 states. [2024-11-13 13:15:59,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4842 to 4616. [2024-11-13 13:15:59,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 4615 states have (on average 1.3003250270855904) internal successors, (6001), 4615 states have internal predecessors, (6001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:59,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 6001 transitions. [2024-11-13 13:15:59,461 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 6001 transitions. Word has length 2127 [2024-11-13 13:15:59,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:15:59,462 INFO L471 AbstractCegarLoop]: Abstraction has 4616 states and 6001 transitions. [2024-11-13 13:15:59,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 175 states, 175 states have (on average 1.1142857142857143) internal successors, (195), 175 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:15:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 6001 transitions. [2024-11-13 13:15:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4274 [2024-11-13 13:15:59,597 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:15:59,598 INFO L215 NwaCegarLoop]: trace histogram [1254, 1254, 1254, 456, 11, 11, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:15:59,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:15:59,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 13:15:59,799 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:15:59,800 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:15:59,800 INFO L85 PathProgramCache]: Analyzing trace with hash 675108125, now seen corresponding path program 9 times [2024-11-13 13:15:59,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:15:59,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905216557] [2024-11-13 13:15:59,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:15:59,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:17:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2476449 backedges. 39679 proven. 6555 refuted. 0 times theorem prover too weak. 2430215 trivial. 0 not checked. [2024-11-13 13:17:38,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:17:38,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905216557] [2024-11-13 13:17:38,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905216557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:17:38,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762520633] [2024-11-13 13:17:38,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:17:38,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:17:38,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:17:38,710 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:17:38,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:17:40,274 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 13:17:40,274 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:17:40,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 13:17:40,328 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:17:41,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 13:17:42,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2476449 backedges. 2528 proven. 0 refuted. 0 times theorem prover too weak. 2473921 trivial. 0 not checked. [2024-11-13 13:17:42,231 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:17:42,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762520633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:17:42,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:17:42,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [118] total 122 [2024-11-13 13:17:42,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528153458] [2024-11-13 13:17:42,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:17:42,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:17:42,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:17:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:17:42,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6800, Invalid=7962, Unknown=0, NotChecked=0, Total=14762 [2024-11-13 13:17:42,237 INFO L87 Difference]: Start difference. First operand 4616 states and 6001 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:17:43,280 INFO L93 Difference]: Finished difference Result 9096 states and 11973 transitions. [2024-11-13 13:17:43,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:17:43,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4273 [2024-11-13 13:17:43,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:17:43,312 INFO L225 Difference]: With dead ends: 9096 [2024-11-13 13:17:43,313 INFO L226 Difference]: Without dead ends: 4955 [2024-11-13 13:17:43,322 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4391 GetRequests, 4270 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=6806, Invalid=8200, Unknown=0, NotChecked=0, Total=15006 [2024-11-13 13:17:43,323 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 30 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:17:43,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 47 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:17:43,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4955 states. [2024-11-13 13:17:44,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4955 to 4616. [2024-11-13 13:17:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4616 states, 4615 states have (on average 1.3001083423618636) internal successors, (6000), 4615 states have internal predecessors, (6000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4616 states to 4616 states and 6000 transitions. [2024-11-13 13:17:44,266 INFO L78 Accepts]: Start accepts. Automaton has 4616 states and 6000 transitions. Word has length 4273 [2024-11-13 13:17:44,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:17:44,272 INFO L471 AbstractCegarLoop]: Abstraction has 4616 states and 6000 transitions. [2024-11-13 13:17:44,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:17:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 4616 states and 6000 transitions. [2024-11-13 13:17:44,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4274 [2024-11-13 13:17:44,438 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:17:44,439 INFO L215 NwaCegarLoop]: trace histogram [1254, 1254, 1253, 456, 11, 11, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:17:44,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:17:44,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-13 13:17:44,641 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:17:44,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:17:44,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1551509601, now seen corresponding path program 1 times [2024-11-13 13:17:44,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:17:44,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121778813] [2024-11-13 13:17:44,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:17:44,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:17:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:19:40,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2476449 backedges. 39679 proven. 6555 refuted. 0 times theorem prover too weak. 2430215 trivial. 0 not checked. [2024-11-13 13:19:40,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:19:40,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121778813] [2024-11-13 13:19:40,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121778813] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:19:40,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70119302] [2024-11-13 13:19:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:19:40,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:19:40,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:19:40,611 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:19:40,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:19:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:19:45,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 14290 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-13 13:19:45,157 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:19:56,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2476449 backedges. 39679 proven. 6555 refuted. 0 times theorem prover too weak. 2430215 trivial. 0 not checked. [2024-11-13 13:19:56,214 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:20:19,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2476449 backedges. 39679 proven. 6555 refuted. 0 times theorem prover too weak. 2430215 trivial. 0 not checked. [2024-11-13 13:20:19,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70119302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:20:19,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:20:19,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [118, 118, 118] total 349 [2024-11-13 13:20:19,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662178115] [2024-11-13 13:20:19,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:20:19,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 349 states [2024-11-13 13:20:19,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:20:19,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 349 interpolants. [2024-11-13 13:20:19,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53827, Invalid=67625, Unknown=0, NotChecked=0, Total=121452 [2024-11-13 13:20:19,315 INFO L87 Difference]: Start difference. First operand 4616 states and 6000 transitions. Second operand has 349 states, 349 states have (on average 1.0601719197707737) internal successors, (370), 349 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:26:14,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:26:14,960 INFO L93 Difference]: Finished difference Result 14212 states and 19998 transitions. [2024-11-13 13:26:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2024-11-13 13:26:14,961 INFO L78 Accepts]: Start accepts. Automaton has has 349 states, 349 states have (on average 1.0601719197707737) internal successors, (370), 349 states have internal predecessors, (370), 0 states have call successors, (0), 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 4273 [2024-11-13 13:26:14,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:26:15,017 INFO L225 Difference]: With dead ends: 14212 [2024-11-13 13:26:15,017 INFO L226 Difference]: Without dead ends: 9714 [2024-11-13 13:26:15,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8777 GetRequests, 8315 SyntacticMatches, 0 SemanticMatches, 462 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79577 ImplicationChecksByTransitivity, 63.7s TimeCoverageRelationStatistics Valid=80852, Invalid=133980, Unknown=0, NotChecked=0, Total=214832 [2024-11-13 13:26:15,043 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 10076 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 2783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10076 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 4503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2783 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:26:15,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10076 Valid, 1173 Invalid, 4503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2783 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2024-11-13 13:26:15,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9714 states. [2024-11-13 13:26:16,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9714 to 9256. [2024-11-13 13:26:16,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9256 states, 9255 states have (on average 1.3000540248514316) internal successors, (12032), 9255 states have internal predecessors, (12032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:26:16,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9256 states to 9256 states and 12032 transitions. [2024-11-13 13:26:16,457 INFO L78 Accepts]: Start accepts. Automaton has 9256 states and 12032 transitions. Word has length 4273 [2024-11-13 13:26:16,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:26:16,458 INFO L471 AbstractCegarLoop]: Abstraction has 9256 states and 12032 transitions. [2024-11-13 13:26:16,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 349 states, 349 states have (on average 1.0601719197707737) internal successors, (370), 349 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:26:16,463 INFO L276 IsEmpty]: Start isEmpty. Operand 9256 states and 12032 transitions. [2024-11-13 13:26:17,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8566 [2024-11-13 13:26:17,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:26:17,114 INFO L215 NwaCegarLoop]: trace histogram [2530, 2530, 2529, 920, 11, 11, 11, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:26:17,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:26:17,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8715ee2-5917-4e11-9e60-19d8e8c7c3b7/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 13:26:17,315 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:26:17,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:26:17,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1828908001, now seen corresponding path program 2 times [2024-11-13 13:26:17,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:26:17,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946647181] [2024-11-13 13:26:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:26:17,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:26:24,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat