./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1 --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 4fa6729695cae933208e9cd0cb2193db5a830deb3d010a9b31d9c8d14c52da9e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:36:01,945 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:36:01,999 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 12:36:02,003 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:36:02,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:36:02,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:36:02,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:36:02,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:36:02,024 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:36:02,024 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:36:02,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:36:02,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:36:02,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:36:02,024 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:36:02,024 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:36:02,025 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:36:02,025 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:36:02,025 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:36:02,025 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:36:02,025 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:36:02,025 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:36:02,025 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:36:02,026 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:36:02,026 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:36:02,026 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:36:02,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:36:02,026 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:36:02,026 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:36:02,026 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:36:02,026 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:36:02,026 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:36:02,026 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:36:02,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:36:02,027 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:36:02,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:36:02,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:36:02,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:36:02,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:36:02,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:36:02,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:36:02,027 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:36:02,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:36:02,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:36:02,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:36:02,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:36:02,028 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:36:02,028 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:36:02,028 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:36:02,028 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_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1 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 -> 4fa6729695cae933208e9cd0cb2193db5a830deb3d010a9b31d9c8d14c52da9e [2024-12-02 12:36:02,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:36:02,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:36:02,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:36:02,237 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:36:02,238 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:36:02,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-12-02 12:36:04,837 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/data/2d79d3c5a/313268074a644bf1bbae857146e49d4d/FLAG6e898ac49 [2024-12-02 12:36:05,240 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:36:05,241 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-12-02 12:36:05,265 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/data/2d79d3c5a/313268074a644bf1bbae857146e49d4d/FLAG6e898ac49 [2024-12-02 12:36:05,408 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/data/2d79d3c5a/313268074a644bf1bbae857146e49d4d [2024-12-02 12:36:05,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:36:05,411 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:36:05,412 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:36:05,413 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:36:05,417 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:36:05,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:36:05" (1/1) ... [2024-12-02 12:36:05,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f527228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:05, skipping insertion in model container [2024-12-02 12:36:05,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:36:05" (1/1) ... [2024-12-02 12:36:05,513 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:36:05,759 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_79da6219-35c7-47ec-8247-8867eee12a01/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c[8712,8725] [2024-12-02 12:36:05,814 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_79da6219-35c7-47ec-8247-8867eee12a01/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c[15773,15786] [2024-12-02 12:36:06,370 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:36:06,380 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:36:06,406 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_79da6219-35c7-47ec-8247-8867eee12a01/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c[8712,8725] [2024-12-02 12:36:06,417 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_79da6219-35c7-47ec-8247-8867eee12a01/sv-benchmarks/c/combinations/pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c[15773,15786] [2024-12-02 12:36:06,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:36:06,737 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:36:06,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06 WrapperNode [2024-12-02 12:36:06,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:36:06,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:36:06,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:36:06,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:36:06,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06" (1/1) ... [2024-12-02 12:36:06,795 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06" (1/1) ... [2024-12-02 12:36:07,064 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5037 [2024-12-02 12:36:07,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:36:07,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:36:07,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:36:07,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:36:07,074 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06" (1/1) ... [2024-12-02 12:36:07,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06" (1/1) ... [2024-12-02 12:36:07,112 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06" (1/1) ... [2024-12-02 12:36:07,243 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 12:36:07,243 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06" (1/1) ... [2024-12-02 12:36:07,243 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06" (1/1) ... [2024-12-02 12:36:07,326 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06" (1/1) ... [2024-12-02 12:36:07,336 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06" (1/1) ... [2024-12-02 12:36:07,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06" (1/1) ... [2024-12-02 12:36:07,418 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06" (1/1) ... [2024-12-02 12:36:07,427 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06" (1/1) ... [2024-12-02 12:36:07,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:36:07,470 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:36:07,470 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:36:07,470 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:36:07,471 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06" (1/1) ... [2024-12-02 12:36:07,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:36:07,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:36:07,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:36:07,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:36:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:36:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:36:07,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:36:07,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:36:07,591 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:36:07,593 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:36:11,845 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-12-02 12:36:11,845 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:36:11,873 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:36:11,873 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 12:36:11,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:36:11 BoogieIcfgContainer [2024-12-02 12:36:11,874 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:36:11,876 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:36:11,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:36:11,881 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:36:11,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:36:05" (1/3) ... [2024-12-02 12:36:11,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158c232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:36:11, skipping insertion in model container [2024-12-02 12:36:11,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:36:06" (2/3) ... [2024-12-02 12:36:11,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@158c232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:36:11, skipping insertion in model container [2024-12-02 12:36:11,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:36:11" (3/3) ... [2024-12-02 12:36:11,883 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-12-02 12:36:11,897 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:36:11,900 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4.ufo.UNBOUNDED.pals+Problem12_label04.c that has 1 procedures, 887 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 12:36:11,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:36:11,987 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;@399fabef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:36:11,987 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 12:36:11,994 INFO L276 IsEmpty]: Start isEmpty. Operand has 887 states, 884 states have (on average 1.9049773755656108) internal successors, (1684), 886 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:12,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-02 12:36:12,001 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:12,001 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:12,002 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:12,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:12,006 INFO L85 PathProgramCache]: Analyzing trace with hash 593970293, now seen corresponding path program 1 times [2024-12-02 12:36:12,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:12,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839200834] [2024-12-02 12:36:12,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:12,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:12,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:12,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839200834] [2024-12-02 12:36:12,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839200834] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:12,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:12,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:36:12,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288783774] [2024-12-02 12:36:12,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:12,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:36:12,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:12,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:36:12,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:36:12,204 INFO L87 Difference]: Start difference. First operand has 887 states, 884 states have (on average 1.9049773755656108) internal successors, (1684), 886 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:12,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:12,266 INFO L93 Difference]: Finished difference Result 1743 states and 3312 transitions. [2024-12-02 12:36:12,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:36:12,268 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-12-02 12:36:12,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:12,281 INFO L225 Difference]: With dead ends: 1743 [2024-12-02 12:36:12,281 INFO L226 Difference]: Without dead ends: 821 [2024-12-02 12:36:12,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:36:12,289 INFO L435 NwaCegarLoop]: 1615 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:12,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:12,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-12-02 12:36:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2024-12-02 12:36:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.8937728937728937) internal successors, (1551), 820 states have internal predecessors, (1551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:12,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1551 transitions. [2024-12-02 12:36:12,352 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1551 transitions. Word has length 22 [2024-12-02 12:36:12,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:12,352 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1551 transitions. [2024-12-02 12:36:12,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:12,353 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1551 transitions. [2024-12-02 12:36:12,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-02 12:36:12,354 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:12,354 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:12,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:36:12,354 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:12,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:12,355 INFO L85 PathProgramCache]: Analyzing trace with hash -427098061, now seen corresponding path program 1 times [2024-12-02 12:36:12,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:12,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325812824] [2024-12-02 12:36:12,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:12,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:12,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:12,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:12,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325812824] [2024-12-02 12:36:12,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325812824] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:12,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:12,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:36:12,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062530981] [2024-12-02 12:36:12,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:12,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:36:12,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:12,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:36:12,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:36:12,558 INFO L87 Difference]: Start difference. First operand 821 states and 1551 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:12,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:12,678 INFO L93 Difference]: Finished difference Result 863 states and 1615 transitions. [2024-12-02 12:36:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:36:12,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-12-02 12:36:12,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:12,683 INFO L225 Difference]: With dead ends: 863 [2024-12-02 12:36:12,683 INFO L226 Difference]: Without dead ends: 821 [2024-12-02 12:36:12,683 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:36:12,684 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 0 mSDsluCounter, 4619 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6168 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:12,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6168 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:36:12,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2024-12-02 12:36:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 821. [2024-12-02 12:36:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 819 states have (on average 1.8656898656898657) internal successors, (1528), 820 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:12,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1528 transitions. [2024-12-02 12:36:12,713 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1528 transitions. Word has length 22 [2024-12-02 12:36:12,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:12,713 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 1528 transitions. [2024-12-02 12:36:12,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:12,713 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1528 transitions. [2024-12-02 12:36:12,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 12:36:12,714 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:12,714 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:12,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:36:12,715 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:12,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:12,715 INFO L85 PathProgramCache]: Analyzing trace with hash 3301806, now seen corresponding path program 1 times [2024-12-02 12:36:12,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:12,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614618006] [2024-12-02 12:36:12,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:12,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:12,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:12,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614618006] [2024-12-02 12:36:12,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614618006] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:12,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:12,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:36:12,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360627134] [2024-12-02 12:36:12,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:12,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:36:12,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:12,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:36:12,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:36:12,895 INFO L87 Difference]: Start difference. First operand 821 states and 1528 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:13,087 INFO L93 Difference]: Finished difference Result 1125 states and 2008 transitions. [2024-12-02 12:36:13,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:36:13,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-12-02 12:36:13,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:13,092 INFO L225 Difference]: With dead ends: 1125 [2024-12-02 12:36:13,092 INFO L226 Difference]: Without dead ends: 1087 [2024-12-02 12:36:13,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 12:36:13,094 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 6285 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6285 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:13,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6285 Valid, 2135 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:36:13,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2024-12-02 12:36:13,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 857. [2024-12-02 12:36:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 855 states have (on average 1.8538011695906433) internal successors, (1585), 856 states have internal predecessors, (1585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1585 transitions. [2024-12-02 12:36:13,119 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1585 transitions. Word has length 44 [2024-12-02 12:36:13,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:13,120 INFO L471 AbstractCegarLoop]: Abstraction has 857 states and 1585 transitions. [2024-12-02 12:36:13,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,120 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1585 transitions. [2024-12-02 12:36:13,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-02 12:36:13,121 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:13,121 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:13,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:36:13,121 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:13,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:13,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1757336638, now seen corresponding path program 1 times [2024-12-02 12:36:13,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:13,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077154010] [2024-12-02 12:36:13,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:13,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:13,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:13,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:13,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:13,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077154010] [2024-12-02 12:36:13,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077154010] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:13,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:13,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:36:13,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346431900] [2024-12-02 12:36:13,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:13,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:36:13,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:13,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:36:13,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:13,234 INFO L87 Difference]: Start difference. First operand 857 states and 1585 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:13,272 INFO L93 Difference]: Finished difference Result 994 states and 1800 transitions. [2024-12-02 12:36:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:36:13,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-12-02 12:36:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:13,277 INFO L225 Difference]: With dead ends: 994 [2024-12-02 12:36:13,277 INFO L226 Difference]: Without dead ends: 920 [2024-12-02 12:36:13,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:13,278 INFO L435 NwaCegarLoop]: 1524 mSDtfsCounter, 1476 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:13,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1577 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:13,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2024-12-02 12:36:13,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 916. [2024-12-02 12:36:13,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8326039387308535) internal successors, (1675), 915 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1675 transitions. [2024-12-02 12:36:13,303 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1675 transitions. Word has length 46 [2024-12-02 12:36:13,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:13,303 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1675 transitions. [2024-12-02 12:36:13,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1675 transitions. [2024-12-02 12:36:13,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-02 12:36:13,305 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:13,305 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:13,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:36:13,305 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:13,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:13,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1823830150, now seen corresponding path program 1 times [2024-12-02 12:36:13,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:13,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463377904] [2024-12-02 12:36:13,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:13,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:13,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:13,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463377904] [2024-12-02 12:36:13,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463377904] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:13,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:13,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:36:13,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000952632] [2024-12-02 12:36:13,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:13,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:36:13,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:13,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:36:13,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:36:13,534 INFO L87 Difference]: Start difference. First operand 916 states and 1675 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:13,651 INFO L93 Difference]: Finished difference Result 1051 states and 1883 transitions. [2024-12-02 12:36:13,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:36:13,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2024-12-02 12:36:13,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:13,655 INFO L225 Difference]: With dead ends: 1051 [2024-12-02 12:36:13,655 INFO L226 Difference]: Without dead ends: 918 [2024-12-02 12:36:13,656 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:36:13,656 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 1493 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:13,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1748 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:13,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2024-12-02 12:36:13,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 916. [2024-12-02 12:36:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8304157549234135) internal successors, (1673), 915 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1673 transitions. [2024-12-02 12:36:13,671 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1673 transitions. Word has length 46 [2024-12-02 12:36:13,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:13,672 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1673 transitions. [2024-12-02 12:36:13,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1673 transitions. [2024-12-02 12:36:13,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-02 12:36:13,672 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:13,672 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:13,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:36:13,673 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:13,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:13,673 INFO L85 PathProgramCache]: Analyzing trace with hash 289436656, now seen corresponding path program 1 times [2024-12-02 12:36:13,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:13,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630896113] [2024-12-02 12:36:13,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:13,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:13,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:13,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630896113] [2024-12-02 12:36:13,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630896113] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:13,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:13,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:36:13,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609777779] [2024-12-02 12:36:13,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:13,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:36:13,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:13,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:36:13,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:36:13,823 INFO L87 Difference]: Start difference. First operand 916 states and 1673 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:13,857 INFO L93 Difference]: Finished difference Result 924 states and 1682 transitions. [2024-12-02 12:36:13,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:36:13,857 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-12-02 12:36:13,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:13,861 INFO L225 Difference]: With dead ends: 924 [2024-12-02 12:36:13,861 INFO L226 Difference]: Without dead ends: 922 [2024-12-02 12:36:13,862 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:36:13,862 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 0 mSDsluCounter, 4566 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6091 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:13,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6091 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:13,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2024-12-02 12:36:13,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 922. [2024-12-02 12:36:13,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 920 states have (on average 1.8239130434782609) internal successors, (1678), 921 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1678 transitions. [2024-12-02 12:36:13,879 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1678 transitions. Word has length 47 [2024-12-02 12:36:13,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:13,879 INFO L471 AbstractCegarLoop]: Abstraction has 922 states and 1678 transitions. [2024-12-02 12:36:13,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,879 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1678 transitions. [2024-12-02 12:36:13,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 12:36:13,880 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:13,880 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:13,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:36:13,880 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:13,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:13,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2036800602, now seen corresponding path program 1 times [2024-12-02 12:36:13,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:13,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165582460] [2024-12-02 12:36:13,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:13,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:13,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:13,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:13,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165582460] [2024-12-02 12:36:13,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165582460] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:13,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:13,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:36:13,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065044327] [2024-12-02 12:36:13,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:13,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:36:13,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:13,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:36:13,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:13,928 INFO L87 Difference]: Start difference. First operand 922 states and 1678 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:13,952 INFO L93 Difference]: Finished difference Result 1184 states and 2070 transitions. [2024-12-02 12:36:13,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:36:13,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-12-02 12:36:13,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:13,955 INFO L225 Difference]: With dead ends: 1184 [2024-12-02 12:36:13,955 INFO L226 Difference]: Without dead ends: 1045 [2024-12-02 12:36:13,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:13,956 INFO L435 NwaCegarLoop]: 1565 mSDtfsCounter, 1487 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:13,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 1630 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:13,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2024-12-02 12:36:13,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1043. [2024-12-02 12:36:13,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1041 states have (on average 1.781940441882805) internal successors, (1855), 1042 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1855 transitions. [2024-12-02 12:36:13,973 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1855 transitions. Word has length 48 [2024-12-02 12:36:13,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:13,973 INFO L471 AbstractCegarLoop]: Abstraction has 1043 states and 1855 transitions. [2024-12-02 12:36:13,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:13,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1855 transitions. [2024-12-02 12:36:13,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 12:36:13,974 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:13,974 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:13,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:36:13,974 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:13,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:13,975 INFO L85 PathProgramCache]: Analyzing trace with hash 42697894, now seen corresponding path program 1 times [2024-12-02 12:36:13,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:13,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186143711] [2024-12-02 12:36:13,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:13,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:14,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:14,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:14,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186143711] [2024-12-02 12:36:14,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186143711] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:14,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:14,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:36:14,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694462506] [2024-12-02 12:36:14,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:14,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:36:14,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:14,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:36:14,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:14,019 INFO L87 Difference]: Start difference. First operand 1043 states and 1855 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:14,043 INFO L93 Difference]: Finished difference Result 1531 states and 2573 transitions. [2024-12-02 12:36:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:36:14,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-12-02 12:36:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:14,046 INFO L225 Difference]: With dead ends: 1531 [2024-12-02 12:36:14,046 INFO L226 Difference]: Without dead ends: 1271 [2024-12-02 12:36:14,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:14,048 INFO L435 NwaCegarLoop]: 1563 mSDtfsCounter, 1485 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:14,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1632 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2024-12-02 12:36:14,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1269. [2024-12-02 12:36:14,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1267 states have (on average 1.718232044198895) internal successors, (2177), 1268 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:14,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 2177 transitions. [2024-12-02 12:36:14,069 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 2177 transitions. Word has length 48 [2024-12-02 12:36:14,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:14,069 INFO L471 AbstractCegarLoop]: Abstraction has 1269 states and 2177 transitions. [2024-12-02 12:36:14,069 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:14,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 2177 transitions. [2024-12-02 12:36:14,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 12:36:14,070 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:14,070 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:14,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:36:14,070 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:14,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:14,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1823630758, now seen corresponding path program 1 times [2024-12-02 12:36:14,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:14,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843383936] [2024-12-02 12:36:14,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:14,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:14,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:14,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:14,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843383936] [2024-12-02 12:36:14,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843383936] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:14,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:14,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:36:14,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650574645] [2024-12-02 12:36:14,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:14,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:36:14,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:14,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:36:14,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:14,115 INFO L87 Difference]: Start difference. First operand 1269 states and 2177 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:14,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:14,145 INFO L93 Difference]: Finished difference Result 2177 states and 3483 transitions. [2024-12-02 12:36:14,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:36:14,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2024-12-02 12:36:14,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:14,149 INFO L225 Difference]: With dead ends: 2177 [2024-12-02 12:36:14,149 INFO L226 Difference]: Without dead ends: 1691 [2024-12-02 12:36:14,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:14,151 INFO L435 NwaCegarLoop]: 1561 mSDtfsCounter, 1483 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1483 SdHoareTripleChecker+Valid, 1634 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:14,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1483 Valid, 1634 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:14,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2024-12-02 12:36:14,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1689. [2024-12-02 12:36:14,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.6342620035566093) internal successors, (2757), 1688 states have internal predecessors, (2757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:14,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2757 transitions. [2024-12-02 12:36:14,178 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2757 transitions. Word has length 48 [2024-12-02 12:36:14,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:14,178 INFO L471 AbstractCegarLoop]: Abstraction has 1689 states and 2757 transitions. [2024-12-02 12:36:14,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:14,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2757 transitions. [2024-12-02 12:36:14,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 12:36:14,179 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:14,179 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:14,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 12:36:14,179 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:14,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:14,180 INFO L85 PathProgramCache]: Analyzing trace with hash 246335073, now seen corresponding path program 1 times [2024-12-02 12:36:14,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:14,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208155507] [2024-12-02 12:36:14,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:14,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:14,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:14,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:14,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208155507] [2024-12-02 12:36:14,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208155507] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:14,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:14,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:36:14,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290401747] [2024-12-02 12:36:14,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:14,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:36:14,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:14,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:36:14,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:14,221 INFO L87 Difference]: Start difference. First operand 1689 states and 2757 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:14,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:14,255 INFO L93 Difference]: Finished difference Result 2656 states and 4155 transitions. [2024-12-02 12:36:14,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:36:14,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2024-12-02 12:36:14,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:14,260 INFO L225 Difference]: With dead ends: 2656 [2024-12-02 12:36:14,260 INFO L226 Difference]: Without dead ends: 2125 [2024-12-02 12:36:14,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:14,262 INFO L435 NwaCegarLoop]: 1570 mSDtfsCounter, 1486 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:14,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1631 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:14,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2024-12-02 12:36:14,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2123. [2024-12-02 12:36:14,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2121 states have (on average 1.5836869401225837) internal successors, (3359), 2122 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:14,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 3359 transitions. [2024-12-02 12:36:14,298 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 3359 transitions. Word has length 50 [2024-12-02 12:36:14,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:14,299 INFO L471 AbstractCegarLoop]: Abstraction has 2123 states and 3359 transitions. [2024-12-02 12:36:14,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:14,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 3359 transitions. [2024-12-02 12:36:14,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-12-02 12:36:14,299 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:14,299 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:14,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 12:36:14,300 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:14,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:14,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1294837951, now seen corresponding path program 1 times [2024-12-02 12:36:14,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:14,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122285955] [2024-12-02 12:36:14,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:14,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:14,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:14,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:14,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:14,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122285955] [2024-12-02 12:36:14,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122285955] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:14,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:14,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:36:14,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636641209] [2024-12-02 12:36:14,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:14,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:36:14,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:14,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:36:14,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:14,345 INFO L87 Difference]: Start difference. First operand 2123 states and 3359 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:17,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:17,545 INFO L93 Difference]: Finished difference Result 3627 states and 6232 transitions. [2024-12-02 12:36:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:36:17,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-12-02 12:36:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:17,551 INFO L225 Difference]: With dead ends: 3627 [2024-12-02 12:36:17,551 INFO L226 Difference]: Without dead ends: 2874 [2024-12-02 12:36:17,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:17,553 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 843 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:17,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 166 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 12:36:17,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2874 states. [2024-12-02 12:36:17,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2874 to 2874. [2024-12-02 12:36:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2874 states, 2872 states have (on average 1.6483286908077994) internal successors, (4734), 2873 states have internal predecessors, (4734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:17,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2874 states to 2874 states and 4734 transitions. [2024-12-02 12:36:17,626 INFO L78 Accepts]: Start accepts. Automaton has 2874 states and 4734 transitions. Word has length 61 [2024-12-02 12:36:17,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:17,626 INFO L471 AbstractCegarLoop]: Abstraction has 2874 states and 4734 transitions. [2024-12-02 12:36:17,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2874 states and 4734 transitions. [2024-12-02 12:36:17,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 12:36:17,628 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:17,628 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:17,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 12:36:17,628 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:17,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:17,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1523853909, now seen corresponding path program 1 times [2024-12-02 12:36:17,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:17,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949482024] [2024-12-02 12:36:17,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:17,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 12:36:17,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:17,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949482024] [2024-12-02 12:36:17,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949482024] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:17,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:17,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:36:17,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067054386] [2024-12-02 12:36:17,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:17,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:36:17,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:17,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:36:17,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:36:17,761 INFO L87 Difference]: Start difference. First operand 2874 states and 4734 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:17,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:17,928 INFO L93 Difference]: Finished difference Result 8524 states and 12691 transitions. [2024-12-02 12:36:17,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:36:17,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-12-02 12:36:17,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:17,947 INFO L225 Difference]: With dead ends: 8524 [2024-12-02 12:36:17,947 INFO L226 Difference]: Without dead ends: 7186 [2024-12-02 12:36:17,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:36:17,951 INFO L435 NwaCegarLoop]: 1582 mSDtfsCounter, 4667 mSDsluCounter, 1768 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:17,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4667 Valid, 3350 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:17,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7186 states. [2024-12-02 12:36:18,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7186 to 4210. [2024-12-02 12:36:18,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4210 states, 4208 states have (on average 1.5679657794676807) internal successors, (6598), 4209 states have internal predecessors, (6598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:18,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 6598 transitions. [2024-12-02 12:36:18,092 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 6598 transitions. Word has length 65 [2024-12-02 12:36:18,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:18,092 INFO L471 AbstractCegarLoop]: Abstraction has 4210 states and 6598 transitions. [2024-12-02 12:36:18,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:18,093 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 6598 transitions. [2024-12-02 12:36:18,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 12:36:18,094 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:18,094 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:18,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 12:36:18,094 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:18,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:18,094 INFO L85 PathProgramCache]: Analyzing trace with hash 555644587, now seen corresponding path program 1 times [2024-12-02 12:36:18,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:18,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309167351] [2024-12-02 12:36:18,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:18,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:18,220 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 12:36:18,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:18,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309167351] [2024-12-02 12:36:18,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309167351] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:18,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:18,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:36:18,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237284014] [2024-12-02 12:36:18,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:18,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:36:18,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:18,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:36:18,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:36:18,221 INFO L87 Difference]: Start difference. First operand 4210 states and 6598 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:18,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:18,412 INFO L93 Difference]: Finished difference Result 9860 states and 14555 transitions. [2024-12-02 12:36:18,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:36:18,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-12-02 12:36:18,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:18,434 INFO L225 Difference]: With dead ends: 9860 [2024-12-02 12:36:18,434 INFO L226 Difference]: Without dead ends: 8522 [2024-12-02 12:36:18,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:36:18,438 INFO L435 NwaCegarLoop]: 1579 mSDtfsCounter, 4692 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4692 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:18,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4692 Valid, 3303 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:18,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8522 states. [2024-12-02 12:36:18,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8522 to 6218. [2024-12-02 12:36:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6218 states, 6216 states have (on average 1.508043758043758) internal successors, (9374), 6217 states have internal predecessors, (9374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:18,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6218 states to 6218 states and 9374 transitions. [2024-12-02 12:36:18,589 INFO L78 Accepts]: Start accepts. Automaton has 6218 states and 9374 transitions. Word has length 65 [2024-12-02 12:36:18,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:18,590 INFO L471 AbstractCegarLoop]: Abstraction has 6218 states and 9374 transitions. [2024-12-02 12:36:18,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:18,590 INFO L276 IsEmpty]: Start isEmpty. Operand 6218 states and 9374 transitions. [2024-12-02 12:36:18,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 12:36:18,591 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:18,591 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:18,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 12:36:18,591 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:18,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:18,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1958389845, now seen corresponding path program 1 times [2024-12-02 12:36:18,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:18,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561684933] [2024-12-02 12:36:18,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:18,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:18,717 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 12:36:18,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:18,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561684933] [2024-12-02 12:36:18,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561684933] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:18,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:18,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:36:18,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478081936] [2024-12-02 12:36:18,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:18,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:36:18,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:18,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:36:18,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:36:18,719 INFO L87 Difference]: Start difference. First operand 6218 states and 9374 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:18,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:18,891 INFO L93 Difference]: Finished difference Result 11196 states and 16419 transitions. [2024-12-02 12:36:18,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:36:18,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-12-02 12:36:18,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:18,909 INFO L225 Difference]: With dead ends: 11196 [2024-12-02 12:36:18,909 INFO L226 Difference]: Without dead ends: 9858 [2024-12-02 12:36:18,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:36:18,913 INFO L435 NwaCegarLoop]: 1581 mSDtfsCounter, 4673 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4673 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:18,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4673 Valid, 3337 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:36:18,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9858 states. [2024-12-02 12:36:19,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9858 to 7554. [2024-12-02 12:36:19,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7554 states, 7552 states have (on average 1.488082627118644) internal successors, (11238), 7553 states have internal predecessors, (11238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7554 states to 7554 states and 11238 transitions. [2024-12-02 12:36:19,097 INFO L78 Accepts]: Start accepts. Automaton has 7554 states and 11238 transitions. Word has length 65 [2024-12-02 12:36:19,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:19,097 INFO L471 AbstractCegarLoop]: Abstraction has 7554 states and 11238 transitions. [2024-12-02 12:36:19,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:19,097 INFO L276 IsEmpty]: Start isEmpty. Operand 7554 states and 11238 transitions. [2024-12-02 12:36:19,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 12:36:19,098 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:19,099 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:19,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 12:36:19,099 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:19,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:19,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1188964029, now seen corresponding path program 1 times [2024-12-02 12:36:19,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:19,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297162014] [2024-12-02 12:36:19,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:19,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:19,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:19,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:19,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297162014] [2024-12-02 12:36:19,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297162014] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:19,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:19,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:36:19,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117111989] [2024-12-02 12:36:19,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:19,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:36:19,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:19,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:36:19,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:19,164 INFO L87 Difference]: Start difference. First operand 7554 states and 11238 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:19,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:19,223 INFO L93 Difference]: Finished difference Result 11896 states and 17379 transitions. [2024-12-02 12:36:19,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:36:19,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-12-02 12:36:19,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:19,232 INFO L225 Difference]: With dead ends: 11896 [2024-12-02 12:36:19,232 INFO L226 Difference]: Without dead ends: 5878 [2024-12-02 12:36:19,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:19,236 INFO L435 NwaCegarLoop]: 1560 mSDtfsCounter, 42 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 3073 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:19,236 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 3073 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:19,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5878 states. [2024-12-02 12:36:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5878 to 5876. [2024-12-02 12:36:19,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5876 states, 5874 states have (on average 1.5171944160708206) internal successors, (8912), 5875 states have internal predecessors, (8912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5876 states to 5876 states and 8912 transitions. [2024-12-02 12:36:19,309 INFO L78 Accepts]: Start accepts. Automaton has 5876 states and 8912 transitions. Word has length 67 [2024-12-02 12:36:19,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:19,309 INFO L471 AbstractCegarLoop]: Abstraction has 5876 states and 8912 transitions. [2024-12-02 12:36:19,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:19,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5876 states and 8912 transitions. [2024-12-02 12:36:19,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 12:36:19,310 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:19,310 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:19,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 12:36:19,311 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:19,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:19,311 INFO L85 PathProgramCache]: Analyzing trace with hash -733131994, now seen corresponding path program 1 times [2024-12-02 12:36:19,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:19,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698595074] [2024-12-02 12:36:19,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:19,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:19,398 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 12:36:19,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:19,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698595074] [2024-12-02 12:36:19,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698595074] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:19,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:19,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:36:19,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229316183] [2024-12-02 12:36:19,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:19,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 12:36:19,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:19,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 12:36:19,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:36:19,399 INFO L87 Difference]: Start difference. First operand 5876 states and 8912 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:19,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:19,554 INFO L93 Difference]: Finished difference Result 9726 states and 14357 transitions. [2024-12-02 12:36:19,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:36:19,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-12-02 12:36:19,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:19,565 INFO L225 Difference]: With dead ends: 9726 [2024-12-02 12:36:19,565 INFO L226 Difference]: Without dead ends: 8764 [2024-12-02 12:36:19,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:36:19,568 INFO L435 NwaCegarLoop]: 1577 mSDtfsCounter, 4665 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4665 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:19,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4665 Valid, 3404 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:36:19,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8764 states. [2024-12-02 12:36:19,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8764 to 6836. [2024-12-02 12:36:19,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6836 states, 6834 states have (on average 1.5007316359379572) internal successors, (10256), 6835 states have internal predecessors, (10256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:19,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6836 states to 6836 states and 10256 transitions. [2024-12-02 12:36:19,729 INFO L78 Accepts]: Start accepts. Automaton has 6836 states and 10256 transitions. Word has length 67 [2024-12-02 12:36:19,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:19,729 INFO L471 AbstractCegarLoop]: Abstraction has 6836 states and 10256 transitions. [2024-12-02 12:36:19,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:19,729 INFO L276 IsEmpty]: Start isEmpty. Operand 6836 states and 10256 transitions. [2024-12-02 12:36:19,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 12:36:19,730 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:19,730 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:19,731 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 12:36:19,731 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:19,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:19,731 INFO L85 PathProgramCache]: Analyzing trace with hash 548136257, now seen corresponding path program 1 times [2024-12-02 12:36:19,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:19,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309428419] [2024-12-02 12:36:19,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:19,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:19,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:19,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309428419] [2024-12-02 12:36:19,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309428419] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:19,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:19,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:36:19,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381420566] [2024-12-02 12:36:19,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:19,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:36:19,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:19,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:36:19,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:19,820 INFO L87 Difference]: Start difference. First operand 6836 states and 10256 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:19,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:19,888 INFO L93 Difference]: Finished difference Result 9480 states and 13954 transitions. [2024-12-02 12:36:19,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:36:19,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2024-12-02 12:36:19,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:19,897 INFO L225 Difference]: With dead ends: 9480 [2024-12-02 12:36:19,897 INFO L226 Difference]: Without dead ends: 4198 [2024-12-02 12:36:19,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:19,902 INFO L435 NwaCegarLoop]: 1553 mSDtfsCounter, 37 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:19,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3058 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:19,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4198 states. [2024-12-02 12:36:19,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4198 to 4196. [2024-12-02 12:36:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4196 states, 4194 states have (on average 1.553648068669528) internal successors, (6516), 4195 states have internal predecessors, (6516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 6516 transitions. [2024-12-02 12:36:19,982 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 6516 transitions. Word has length 68 [2024-12-02 12:36:19,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:19,983 INFO L471 AbstractCegarLoop]: Abstraction has 4196 states and 6516 transitions. [2024-12-02 12:36:19,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 6516 transitions. [2024-12-02 12:36:19,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 12:36:19,984 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:19,984 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:19,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 12:36:19,984 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:19,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:19,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1967598547, now seen corresponding path program 1 times [2024-12-02 12:36:19,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:19,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089720833] [2024-12-02 12:36:19,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:19,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:20,071 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:20,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:20,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089720833] [2024-12-02 12:36:20,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089720833] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:20,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:20,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:36:20,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057157492] [2024-12-02 12:36:20,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:20,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:36:20,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:20,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:36:20,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:20,073 INFO L87 Difference]: Start difference. First operand 4196 states and 6516 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:20,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:20,116 INFO L93 Difference]: Finished difference Result 5520 states and 8344 transitions. [2024-12-02 12:36:20,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:36:20,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2024-12-02 12:36:20,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:20,123 INFO L225 Difference]: With dead ends: 5520 [2024-12-02 12:36:20,123 INFO L226 Difference]: Without dead ends: 2878 [2024-12-02 12:36:20,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:20,126 INFO L435 NwaCegarLoop]: 1546 mSDtfsCounter, 34 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:20,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3043 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:20,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2024-12-02 12:36:20,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2876. [2024-12-02 12:36:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2876 states, 2874 states have (on average 1.6242171189979122) internal successors, (4668), 2875 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 4668 transitions. [2024-12-02 12:36:20,176 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 4668 transitions. Word has length 70 [2024-12-02 12:36:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:20,176 INFO L471 AbstractCegarLoop]: Abstraction has 2876 states and 4668 transitions. [2024-12-02 12:36:20,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 4668 transitions. [2024-12-02 12:36:20,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 12:36:20,177 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:20,177 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:20,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 12:36:20,177 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:20,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:20,178 INFO L85 PathProgramCache]: Analyzing trace with hash -673918747, now seen corresponding path program 1 times [2024-12-02 12:36:20,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:20,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597714579] [2024-12-02 12:36:20,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:20,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:20,255 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:20,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:20,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597714579] [2024-12-02 12:36:20,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597714579] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:36:20,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:36:20,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:36:20,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855788830] [2024-12-02 12:36:20,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:36:20,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:36:20,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:20,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:36:20,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:20,256 INFO L87 Difference]: Start difference. First operand 2876 states and 4668 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:20,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:20,289 INFO L93 Difference]: Finished difference Result 3540 states and 5572 transitions. [2024-12-02 12:36:20,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:36:20,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-12-02 12:36:20,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:20,295 INFO L225 Difference]: With dead ends: 3540 [2024-12-02 12:36:20,295 INFO L226 Difference]: Without dead ends: 2218 [2024-12-02 12:36:20,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:36:20,297 INFO L435 NwaCegarLoop]: 1539 mSDtfsCounter, 31 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3028 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:20,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3028 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:36:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2024-12-02 12:36:20,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2216. [2024-12-02 12:36:20,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 2214 states have (on average 1.6960252935862692) internal successors, (3755), 2215 states have internal predecessors, (3755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 3755 transitions. [2024-12-02 12:36:20,334 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 3755 transitions. Word has length 72 [2024-12-02 12:36:20,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:20,334 INFO L471 AbstractCegarLoop]: Abstraction has 2216 states and 3755 transitions. [2024-12-02 12:36:20,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:20,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 3755 transitions. [2024-12-02 12:36:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 12:36:20,335 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:20,335 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:20,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 12:36:20,335 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:20,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:20,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1516893303, now seen corresponding path program 1 times [2024-12-02 12:36:20,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:20,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242406365] [2024-12-02 12:36:20,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:20,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:21,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:21,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242406365] [2024-12-02 12:36:21,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242406365] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:36:21,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950034758] [2024-12-02 12:36:21,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:21,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:36:21,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:36:21,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:36:21,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:36:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:21,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 12:36:21,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:36:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:22,491 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:36:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:23,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950034758] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:36:23,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:36:23,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 27 [2024-12-02 12:36:23,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793188624] [2024-12-02 12:36:23,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:36:23,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 12:36:23,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:23,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 12:36:23,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2024-12-02 12:36:23,491 INFO L87 Difference]: Start difference. First operand 2216 states and 3755 transitions. Second operand has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:26,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:26,207 INFO L93 Difference]: Finished difference Result 4580 states and 6939 transitions. [2024-12-02 12:36:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-12-02 12:36:26,207 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 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 74 [2024-12-02 12:36:26,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:26,212 INFO L225 Difference]: With dead ends: 4580 [2024-12-02 12:36:26,212 INFO L226 Difference]: Without dead ends: 3918 [2024-12-02 12:36:26,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=858, Invalid=3174, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 12:36:26,215 INFO L435 NwaCegarLoop]: 1493 mSDtfsCounter, 21782 mSDsluCounter, 4964 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21782 SdHoareTripleChecker+Valid, 6457 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:26,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21782 Valid, 6457 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 12:36:26,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2024-12-02 12:36:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3855. [2024-12-02 12:36:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3855 states, 3853 states have (on average 1.5341292499351156) internal successors, (5911), 3854 states have internal predecessors, (5911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3855 states to 3855 states and 5911 transitions. [2024-12-02 12:36:26,312 INFO L78 Accepts]: Start accepts. Automaton has 3855 states and 5911 transitions. Word has length 74 [2024-12-02 12:36:26,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:26,312 INFO L471 AbstractCegarLoop]: Abstraction has 3855 states and 5911 transitions. [2024-12-02 12:36:26,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.714285714285714) internal successors, (188), 27 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 3855 states and 5911 transitions. [2024-12-02 12:36:26,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 12:36:26,314 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:26,314 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:26,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:36:26,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:36:26,514 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:26,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash 217982714, now seen corresponding path program 1 times [2024-12-02 12:36:26,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:26,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291214238] [2024-12-02 12:36:26,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:26,929 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:26,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:26,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291214238] [2024-12-02 12:36:26,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291214238] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:36:26,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187906493] [2024-12-02 12:36:26,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:26,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:36:26,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:36:26,932 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:36:26,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:36:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:27,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 12:36:27,044 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:36:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:27,421 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:36:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:28,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187906493] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:36:28,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:36:28,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-12-02 12:36:28,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375637584] [2024-12-02 12:36:28,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:36:28,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 12:36:28,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:28,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 12:36:28,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-12-02 12:36:28,182 INFO L87 Difference]: Start difference. First operand 3855 states and 5911 transitions. Second operand has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:29,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:29,444 INFO L93 Difference]: Finished difference Result 10432 states and 14716 transitions. [2024-12-02 12:36:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 12:36:29,444 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2024-12-02 12:36:29,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:29,455 INFO L225 Difference]: With dead ends: 10432 [2024-12-02 12:36:29,455 INFO L226 Difference]: Without dead ends: 8131 [2024-12-02 12:36:29,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=457, Invalid=1613, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 12:36:29,459 INFO L435 NwaCegarLoop]: 1494 mSDtfsCounter, 15506 mSDsluCounter, 6443 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15506 SdHoareTripleChecker+Valid, 7937 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:29,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15506 Valid, 7937 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 12:36:29,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8131 states. [2024-12-02 12:36:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8131 to 8090. [2024-12-02 12:36:29,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8090 states, 8088 states have (on average 1.4176557863501484) internal successors, (11466), 8089 states have internal predecessors, (11466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:29,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8090 states to 8090 states and 11466 transitions. [2024-12-02 12:36:29,618 INFO L78 Accepts]: Start accepts. Automaton has 8090 states and 11466 transitions. Word has length 75 [2024-12-02 12:36:29,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:29,618 INFO L471 AbstractCegarLoop]: Abstraction has 8090 states and 11466 transitions. [2024-12-02 12:36:29,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.36) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:29,618 INFO L276 IsEmpty]: Start isEmpty. Operand 8090 states and 11466 transitions. [2024-12-02 12:36:29,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 12:36:29,619 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:29,619 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:29,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:36:29,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:36:29,820 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:29,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:29,820 INFO L85 PathProgramCache]: Analyzing trace with hash -268185879, now seen corresponding path program 1 times [2024-12-02 12:36:29,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:29,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558135187] [2024-12-02 12:36:29,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:29,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:30,172 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:30,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:30,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558135187] [2024-12-02 12:36:30,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558135187] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:36:30,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199867346] [2024-12-02 12:36:30,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:30,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:36:30,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:36:30,175 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:36:30,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:36:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:30,369 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 12:36:30,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:36:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:30,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:36:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:31,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199867346] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:36:31,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:36:31,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2024-12-02 12:36:31,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586950594] [2024-12-02 12:36:31,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:36:31,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 12:36:31,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:31,717 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 12:36:31,717 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=624, Unknown=0, NotChecked=0, Total=756 [2024-12-02 12:36:31,717 INFO L87 Difference]: Start difference. First operand 8090 states and 11466 transitions. Second operand has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:32,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:36:32,476 INFO L93 Difference]: Finished difference Result 19767 states and 26902 transitions. [2024-12-02 12:36:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 12:36:32,477 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 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 76 [2024-12-02 12:36:32,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:36:32,488 INFO L225 Difference]: With dead ends: 19767 [2024-12-02 12:36:32,488 INFO L226 Difference]: Without dead ends: 13231 [2024-12-02 12:36:32,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=351, Invalid=1209, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 12:36:32,493 INFO L435 NwaCegarLoop]: 1517 mSDtfsCounter, 12194 mSDsluCounter, 7884 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12194 SdHoareTripleChecker+Valid, 9401 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:36:32,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12194 Valid, 9401 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 12:36:32,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13231 states. [2024-12-02 12:36:32,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13231 to 12589. [2024-12-02 12:36:32,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12589 states, 12587 states have (on average 1.3697465639151505) internal successors, (17241), 12588 states have internal predecessors, (17241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12589 states to 12589 states and 17241 transitions. [2024-12-02 12:36:32,765 INFO L78 Accepts]: Start accepts. Automaton has 12589 states and 17241 transitions. Word has length 76 [2024-12-02 12:36:32,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:36:32,765 INFO L471 AbstractCegarLoop]: Abstraction has 12589 states and 17241 transitions. [2024-12-02 12:36:32,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 7.0) internal successors, (196), 28 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:36:32,765 INFO L276 IsEmpty]: Start isEmpty. Operand 12589 states and 17241 transitions. [2024-12-02 12:36:32,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 12:36:32,766 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:36:32,766 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:36:32,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:36:32,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:36:32,967 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:36:32,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:36:32,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1113650506, now seen corresponding path program 1 times [2024-12-02 12:36:32,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:36:32,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479408375] [2024-12-02 12:36:32,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:32,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:36:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:34,385 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:34,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:36:34,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479408375] [2024-12-02 12:36:34,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479408375] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:36:34,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808474280] [2024-12-02 12:36:34,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:36:34,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:36:34,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:36:34,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:36:34,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:36:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:36:34,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 12:36:34,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:36:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:52,135 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:36:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:36:57,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808474280] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:36:57,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:36:57,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 25, 23] total 60 [2024-12-02 12:36:57,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342364258] [2024-12-02 12:36:57,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:36:57,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-12-02 12:36:57,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:36:57,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-12-02 12:36:57,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=3182, Unknown=0, NotChecked=0, Total=3540 [2024-12-02 12:36:57,032 INFO L87 Difference]: Start difference. First operand 12589 states and 17241 transitions. Second operand has 60 states, 60 states have (on average 3.4833333333333334) internal successors, (209), 60 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:02,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:02,486 INFO L93 Difference]: Finished difference Result 61447 states and 80764 transitions. [2024-12-02 12:39:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 280 states. [2024-12-02 12:39:02,487 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 3.4833333333333334) internal successors, (209), 60 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2024-12-02 12:39:02,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:02,620 INFO L225 Difference]: With dead ends: 61447 [2024-12-02 12:39:02,620 INFO L226 Difference]: Without dead ends: 54239 [2024-12-02 12:39:02,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 336 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47184 ImplicationChecksByTransitivity, 120.6s TimeCoverageRelationStatistics Valid=18868, Invalid=95038, Unknown=0, NotChecked=0, Total=113906 [2024-12-02 12:39:02,642 INFO L435 NwaCegarLoop]: 1561 mSDtfsCounter, 34823 mSDsluCounter, 25732 mSDsCounter, 0 mSdLazyCounter, 6934 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34823 SdHoareTripleChecker+Valid, 27293 SdHoareTripleChecker+Invalid, 7182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 6934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:02,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34823 Valid, 27293 Invalid, 7182 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [248 Valid, 6934 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2024-12-02 12:39:02,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54239 states. [2024-12-02 12:39:04,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54239 to 21724. [2024-12-02 12:39:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21724 states, 21722 states have (on average 1.3423257526931223) internal successors, (29158), 21723 states have internal predecessors, (29158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:04,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21724 states to 21724 states and 29158 transitions. [2024-12-02 12:39:04,257 INFO L78 Accepts]: Start accepts. Automaton has 21724 states and 29158 transitions. Word has length 77 [2024-12-02 12:39:04,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:04,257 INFO L471 AbstractCegarLoop]: Abstraction has 21724 states and 29158 transitions. [2024-12-02 12:39:04,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 3.4833333333333334) internal successors, (209), 60 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:04,258 INFO L276 IsEmpty]: Start isEmpty. Operand 21724 states and 29158 transitions. [2024-12-02 12:39:04,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 12:39:04,261 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:04,262 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:04,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 12:39:04,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:04,463 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:39:04,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:04,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1383704617, now seen corresponding path program 1 times [2024-12-02 12:39:04,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:04,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240820942] [2024-12-02 12:39:04,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:04,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:06,844 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:06,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:06,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240820942] [2024-12-02 12:39:06,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240820942] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:06,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683998853] [2024-12-02 12:39:06,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:06,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:06,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:06,846 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:06,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:39:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:06,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 12:39:06,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 12:39:07,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:07,441 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 12:39:07,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683998853] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:07,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:07,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 6, 4] total 30 [2024-12-02 12:39:07,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048347328] [2024-12-02 12:39:07,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:07,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 12:39:07,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:07,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 12:39:07,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2024-12-02 12:39:07,443 INFO L87 Difference]: Start difference. First operand 21724 states and 29158 transitions. Second operand has 30 states, 30 states have (on average 7.233333333333333) internal successors, (217), 30 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:31,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:39:31,557 INFO L93 Difference]: Finished difference Result 109788 states and 140979 transitions. [2024-12-02 12:39:31,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2024-12-02 12:39:31,558 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.233333333333333) internal successors, (217), 30 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-12-02 12:39:31,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:39:31,669 INFO L225 Difference]: With dead ends: 109788 [2024-12-02 12:39:31,669 INFO L226 Difference]: Without dead ends: 89618 [2024-12-02 12:39:31,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21408 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=8576, Invalid=39604, Unknown=0, NotChecked=0, Total=48180 [2024-12-02 12:39:31,694 INFO L435 NwaCegarLoop]: 1577 mSDtfsCounter, 21410 mSDsluCounter, 17871 mSDsCounter, 0 mSdLazyCounter, 3417 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21410 SdHoareTripleChecker+Valid, 19448 SdHoareTripleChecker+Invalid, 3640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 3417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:39:31,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21410 Valid, 19448 Invalid, 3640 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [223 Valid, 3417 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 12:39:31,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89618 states. [2024-12-02 12:39:34,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89618 to 48913. [2024-12-02 12:39:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48913 states, 48911 states have (on average 1.2561387009057268) internal successors, (61439), 48912 states have internal predecessors, (61439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:34,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48913 states to 48913 states and 61439 transitions. [2024-12-02 12:39:34,880 INFO L78 Accepts]: Start accepts. Automaton has 48913 states and 61439 transitions. Word has length 78 [2024-12-02 12:39:34,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:39:34,880 INFO L471 AbstractCegarLoop]: Abstraction has 48913 states and 61439 transitions. [2024-12-02 12:39:34,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.233333333333333) internal successors, (217), 30 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:39:34,881 INFO L276 IsEmpty]: Start isEmpty. Operand 48913 states and 61439 transitions. [2024-12-02 12:39:34,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 12:39:34,882 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:39:34,882 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:39:34,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:39:35,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:35,083 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:39:35,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:39:35,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1281515107, now seen corresponding path program 1 times [2024-12-02 12:39:35,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:39:35,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377614012] [2024-12-02 12:39:35,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:35,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:39:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:37,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:39:37,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377614012] [2024-12-02 12:39:37,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377614012] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:39:37,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744436234] [2024-12-02 12:39:37,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:39:37,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:39:37,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:39:37,051 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:39:37,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:39:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:39:37,174 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 12:39:37,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:39:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:42,115 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:39:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:39:50,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744436234] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:39:50,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:39:50,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28, 27] total 77 [2024-12-02 12:39:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864840196] [2024-12-02 12:39:50,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:39:50,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-12-02 12:39:50,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:39:50,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-12-02 12:39:50,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=560, Invalid=5292, Unknown=0, NotChecked=0, Total=5852 [2024-12-02 12:39:50,237 INFO L87 Difference]: Start difference. First operand 48913 states and 61439 transitions. Second operand has 77 states, 77 states have (on average 2.8051948051948052) internal successors, (216), 77 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:13,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:41:13,201 INFO L93 Difference]: Finished difference Result 95289 states and 119552 transitions. [2024-12-02 12:41:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2024-12-02 12:41:13,202 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.8051948051948052) internal successors, (216), 77 states have internal predecessors, (216), 0 states have call successors, (0), 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 78 [2024-12-02 12:41:13,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:41:13,267 INFO L225 Difference]: With dead ends: 95289 [2024-12-02 12:41:13,267 INFO L226 Difference]: Without dead ends: 91732 [2024-12-02 12:41:13,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 287 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30376 ImplicationChecksByTransitivity, 76.4s TimeCoverageRelationStatistics Valid=13584, Invalid=69648, Unknown=0, NotChecked=0, Total=83232 [2024-12-02 12:41:13,284 INFO L435 NwaCegarLoop]: 1616 mSDtfsCounter, 39999 mSDsluCounter, 28179 mSDsCounter, 0 mSdLazyCounter, 6076 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39999 SdHoareTripleChecker+Valid, 29795 SdHoareTripleChecker+Invalid, 6462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 6076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:41:13,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39999 Valid, 29795 Invalid, 6462 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [386 Valid, 6076 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-12-02 12:41:13,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91732 states. [2024-12-02 12:41:16,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91732 to 51982. [2024-12-02 12:41:16,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51982 states, 51980 states have (on average 1.2548287803001155) internal successors, (65226), 51981 states have internal predecessors, (65226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:16,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51982 states to 51982 states and 65226 transitions. [2024-12-02 12:41:16,650 INFO L78 Accepts]: Start accepts. Automaton has 51982 states and 65226 transitions. Word has length 78 [2024-12-02 12:41:16,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:41:16,650 INFO L471 AbstractCegarLoop]: Abstraction has 51982 states and 65226 transitions. [2024-12-02 12:41:16,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.8051948051948052) internal successors, (216), 77 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:16,650 INFO L276 IsEmpty]: Start isEmpty. Operand 51982 states and 65226 transitions. [2024-12-02 12:41:16,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-12-02 12:41:16,651 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:41:16,651 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:41:16,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 12:41:16,852 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:41:16,852 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:41:16,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:16,852 INFO L85 PathProgramCache]: Analyzing trace with hash -601997175, now seen corresponding path program 1 times [2024-12-02 12:41:16,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:16,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880750465] [2024-12-02 12:41:16,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:16,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:17,477 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:17,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:17,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880750465] [2024-12-02 12:41:17,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880750465] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:41:17,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269132368] [2024-12-02 12:41:17,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:17,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:41:17,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:41:17,480 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:41:17,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 12:41:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:17,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-02 12:41:17,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:41:21,028 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:21,028 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:41:25,448 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:25,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269132368] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:41:25,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:41:25,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23, 19] total 53 [2024-12-02 12:41:25,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914184335] [2024-12-02 12:41:25,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:41:25,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 12:41:25,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:41:25,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 12:41:25,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=2375, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 12:41:25,450 INFO L87 Difference]: Start difference. First operand 51982 states and 65226 transitions. Second operand has 53 states, 53 states have (on average 4.056603773584905) internal successors, (215), 53 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:50,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:41:50,293 INFO L93 Difference]: Finished difference Result 101348 states and 126558 transitions. [2024-12-02 12:41:50,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-12-02 12:41:50,294 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.056603773584905) internal successors, (215), 53 states have internal predecessors, (215), 0 states have call successors, (0), 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 78 [2024-12-02 12:41:50,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:41:50,347 INFO L225 Difference]: With dead ends: 101348 [2024-12-02 12:41:50,347 INFO L226 Difference]: Without dead ends: 74751 [2024-12-02 12:41:50,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5472 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=3736, Invalid=13820, Unknown=0, NotChecked=0, Total=17556 [2024-12-02 12:41:50,362 INFO L435 NwaCegarLoop]: 1532 mSDtfsCounter, 16987 mSDsluCounter, 24595 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16987 SdHoareTripleChecker+Valid, 26127 SdHoareTripleChecker+Invalid, 2584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:41:50,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16987 Valid, 26127 Invalid, 2584 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [79 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-12-02 12:41:50,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74751 states. [2024-12-02 12:41:53,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74751 to 46936. [2024-12-02 12:41:53,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46936 states, 46934 states have (on average 1.2610687348191076) internal successors, (59187), 46935 states have internal predecessors, (59187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46936 states to 46936 states and 59187 transitions. [2024-12-02 12:41:53,667 INFO L78 Accepts]: Start accepts. Automaton has 46936 states and 59187 transitions. Word has length 78 [2024-12-02 12:41:53,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:41:53,668 INFO L471 AbstractCegarLoop]: Abstraction has 46936 states and 59187 transitions. [2024-12-02 12:41:53,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.056603773584905) internal successors, (215), 53 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:41:53,668 INFO L276 IsEmpty]: Start isEmpty. Operand 46936 states and 59187 transitions. [2024-12-02 12:41:53,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-12-02 12:41:53,669 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:41:53,669 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:41:53,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 12:41:53,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:41:53,869 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:41:53,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:41:53,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1635842272, now seen corresponding path program 1 times [2024-12-02 12:41:53,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:41:53,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217752014] [2024-12-02 12:41:53,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:53,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:41:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:54,491 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:54,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:41:54,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217752014] [2024-12-02 12:41:54,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217752014] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:41:54,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570153143] [2024-12-02 12:41:54,492 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:41:54,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:41:54,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:41:54,493 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:41:54,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 12:41:54,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:41:54,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-12-02 12:41:54,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:41:57,280 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:41:57,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:42:03,258 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:03,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570153143] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:42:03,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:42:03,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21, 26] total 58 [2024-12-02 12:42:03,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127105294] [2024-12-02 12:42:03,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:42:03,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-02 12:42:03,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:03,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-02 12:42:03,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=475, Invalid=2831, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 12:42:03,260 INFO L87 Difference]: Start difference. First operand 46936 states and 59187 transitions. Second operand has 58 states, 58 states have (on average 3.5) internal successors, (203), 58 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:13,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:42:13,358 INFO L93 Difference]: Finished difference Result 65789 states and 82608 transitions. [2024-12-02 12:42:13,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-12-02 12:42:13,359 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 3.5) internal successors, (203), 58 states have internal predecessors, (203), 0 states have call successors, (0), 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 79 [2024-12-02 12:42:13,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:42:13,392 INFO L225 Difference]: With dead ends: 65789 [2024-12-02 12:42:13,392 INFO L226 Difference]: Without dead ends: 45960 [2024-12-02 12:42:13,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 112 SyntacticMatches, 2 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2463 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=2418, Invalid=7884, Unknown=0, NotChecked=0, Total=10302 [2024-12-02 12:42:13,403 INFO L435 NwaCegarLoop]: 1525 mSDtfsCounter, 27960 mSDsluCounter, 17216 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27960 SdHoareTripleChecker+Valid, 18741 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-02 12:42:13,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27960 Valid, 18741 Invalid, 1884 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [81 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-02 12:42:13,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45960 states. [2024-12-02 12:42:16,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45960 to 42270. [2024-12-02 12:42:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42270 states, 42268 states have (on average 1.256127566953724) internal successors, (53094), 42269 states have internal predecessors, (53094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:16,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42270 states to 42270 states and 53094 transitions. [2024-12-02 12:42:16,395 INFO L78 Accepts]: Start accepts. Automaton has 42270 states and 53094 transitions. Word has length 79 [2024-12-02 12:42:16,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:42:16,396 INFO L471 AbstractCegarLoop]: Abstraction has 42270 states and 53094 transitions. [2024-12-02 12:42:16,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 3.5) internal successors, (203), 58 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:16,396 INFO L276 IsEmpty]: Start isEmpty. Operand 42270 states and 53094 transitions. [2024-12-02 12:42:16,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 12:42:16,400 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:42:16,400 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:42:16,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-12-02 12:42:16,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 12:42:16,601 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:42:16,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:16,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1736939660, now seen corresponding path program 1 times [2024-12-02 12:42:16,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:16,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845429332] [2024-12-02 12:42:16,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:16,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:17,441 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 33 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:17,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:17,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845429332] [2024-12-02 12:42:17,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845429332] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:42:17,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82362970] [2024-12-02 12:42:17,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:17,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:42:17,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:42:17,443 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:42:17,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 12:42:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:17,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 12:42:17,575 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:42:18,408 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 22 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:18,409 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:42:20,837 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 17 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:20,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82362970] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:42:20,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:42:20,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 36 [2024-12-02 12:42:20,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532455790] [2024-12-02 12:42:20,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:42:20,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 12:42:20,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:20,838 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 12:42:20,838 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1155, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 12:42:20,838 INFO L87 Difference]: Start difference. First operand 42270 states and 53094 transitions. Second operand has 36 states, 36 states have (on average 9.472222222222221) internal successors, (341), 36 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:36,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:42:36,623 INFO L93 Difference]: Finished difference Result 110997 states and 137829 transitions. [2024-12-02 12:42:36,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-12-02 12:42:36,623 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 9.472222222222221) internal successors, (341), 36 states have internal predecessors, (341), 0 states have call successors, (0), 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 124 [2024-12-02 12:42:36,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:42:36,677 INFO L225 Difference]: With dead ends: 110997 [2024-12-02 12:42:36,677 INFO L226 Difference]: Without dead ends: 79688 [2024-12-02 12:42:36,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5814 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=3524, Invalid=16216, Unknown=0, NotChecked=0, Total=19740 [2024-12-02 12:42:36,693 INFO L435 NwaCegarLoop]: 1577 mSDtfsCounter, 22527 mSDsluCounter, 20850 mSDsCounter, 0 mSdLazyCounter, 2103 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22527 SdHoareTripleChecker+Valid, 22427 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 2103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:42:36,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22527 Valid, 22427 Invalid, 2229 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [126 Valid, 2103 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 12:42:36,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79688 states. [2024-12-02 12:42:40,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79688 to 45125. [2024-12-02 12:42:40,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45125 states, 45123 states have (on average 1.2361323493562042) internal successors, (55778), 45124 states have internal predecessors, (55778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:40,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45125 states to 45125 states and 55778 transitions. [2024-12-02 12:42:40,436 INFO L78 Accepts]: Start accepts. Automaton has 45125 states and 55778 transitions. Word has length 124 [2024-12-02 12:42:40,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:42:40,436 INFO L471 AbstractCegarLoop]: Abstraction has 45125 states and 55778 transitions. [2024-12-02 12:42:40,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 9.472222222222221) internal successors, (341), 36 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:42:40,436 INFO L276 IsEmpty]: Start isEmpty. Operand 45125 states and 55778 transitions. [2024-12-02 12:42:40,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 12:42:40,438 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:42:40,438 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:42:40,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 12:42:40,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 12:42:40,639 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:42:40,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:42:40,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1019949708, now seen corresponding path program 1 times [2024-12-02 12:42:40,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:42:40,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834108030] [2024-12-02 12:42:40,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:40,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:42:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:41,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:42:41,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834108030] [2024-12-02 12:42:41,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834108030] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:42:41,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552061839] [2024-12-02 12:42:41,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:42:41,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:42:41,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:42:41,700 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:42:41,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 12:42:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:42:41,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 12:42:41,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:42:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 34 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:43,178 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:42:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 37 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:42:45,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552061839] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:42:45,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:42:45,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 14] total 48 [2024-12-02 12:42:45,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30201169] [2024-12-02 12:42:45,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:42:45,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-12-02 12:42:45,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:42:45,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-12-02 12:42:45,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2094, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 12:42:45,358 INFO L87 Difference]: Start difference. First operand 45125 states and 55778 transitions. Second operand has 48 states, 48 states have (on average 7.145833333333333) internal successors, (343), 48 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:04,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:43:04,509 INFO L93 Difference]: Finished difference Result 113788 states and 140192 transitions. [2024-12-02 12:43:04,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-12-02 12:43:04,510 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 7.145833333333333) internal successors, (343), 48 states have internal predecessors, (343), 0 states have call successors, (0), 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 124 [2024-12-02 12:43:04,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:43:04,600 INFO L225 Difference]: With dead ends: 113788 [2024-12-02 12:43:04,600 INFO L226 Difference]: Without dead ends: 87912 [2024-12-02 12:43:04,619 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6854 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=2820, Invalid=18060, Unknown=0, NotChecked=0, Total=20880 [2024-12-02 12:43:04,620 INFO L435 NwaCegarLoop]: 1557 mSDtfsCounter, 26558 mSDsluCounter, 23923 mSDsCounter, 0 mSdLazyCounter, 4168 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26558 SdHoareTripleChecker+Valid, 25480 SdHoareTripleChecker+Invalid, 4254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 4168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:43:04,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26558 Valid, 25480 Invalid, 4254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [86 Valid, 4168 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-12-02 12:43:04,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87912 states. [2024-12-02 12:43:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87912 to 61828. [2024-12-02 12:43:10,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61828 states, 61826 states have (on average 1.2255361821887232) internal successors, (75770), 61827 states have internal predecessors, (75770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61828 states to 61828 states and 75770 transitions. [2024-12-02 12:43:10,211 INFO L78 Accepts]: Start accepts. Automaton has 61828 states and 75770 transitions. Word has length 124 [2024-12-02 12:43:10,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:43:10,211 INFO L471 AbstractCegarLoop]: Abstraction has 61828 states and 75770 transitions. [2024-12-02 12:43:10,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 7.145833333333333) internal successors, (343), 48 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:10,211 INFO L276 IsEmpty]: Start isEmpty. Operand 61828 states and 75770 transitions. [2024-12-02 12:43:10,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 12:43:10,214 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:43:10,214 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:43:10,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 12:43:10,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 12:43:10,414 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:43:10,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:43:10,415 INFO L85 PathProgramCache]: Analyzing trace with hash 423890383, now seen corresponding path program 1 times [2024-12-02 12:43:10,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:43:10,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216656527] [2024-12-02 12:43:10,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:10,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:43:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 16 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:10,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:43:10,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216656527] [2024-12-02 12:43:10,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216656527] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:43:10,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242362055] [2024-12-02 12:43:10,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:43:10,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:43:10,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:43:10,951 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:43:10,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 12:43:11,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:43:11,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-02 12:43:11,087 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:43:12,969 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:12,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:43:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 24 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:43:16,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242362055] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:43:16,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:43:16,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21, 21] total 53 [2024-12-02 12:43:16,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264018937] [2024-12-02 12:43:16,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:43:16,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 12:43:16,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:43:16,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 12:43:16,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=2450, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 12:43:16,482 INFO L87 Difference]: Start difference. First operand 61828 states and 75770 transitions. Second operand has 53 states, 53 states have (on average 6.735849056603773) internal successors, (357), 53 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:43:52,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:43:52,165 INFO L93 Difference]: Finished difference Result 154718 states and 190082 transitions. [2024-12-02 12:43:52,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2024-12-02 12:43:52,165 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 6.735849056603773) internal successors, (357), 53 states have internal predecessors, (357), 0 states have call successors, (0), 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 125 [2024-12-02 12:43:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:43:52,252 INFO L225 Difference]: With dead ends: 154718 [2024-12-02 12:43:52,252 INFO L226 Difference]: Without dead ends: 118861 [2024-12-02 12:43:52,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10527 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=5987, Invalid=28423, Unknown=0, NotChecked=0, Total=34410 [2024-12-02 12:43:52,271 INFO L435 NwaCegarLoop]: 1600 mSDtfsCounter, 25226 mSDsluCounter, 29155 mSDsCounter, 0 mSdLazyCounter, 3417 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25226 SdHoareTripleChecker+Valid, 30755 SdHoareTripleChecker+Invalid, 3565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:43:52,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25226 Valid, 30755 Invalid, 3565 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [148 Valid, 3417 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 12:43:52,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118861 states. [2024-12-02 12:44:02,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118861 to 102585. [2024-12-02 12:44:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102585 states, 102583 states have (on average 1.2052776775879044) internal successors, (123641), 102584 states have internal predecessors, (123641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:44:02,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102585 states to 102585 states and 123641 transitions. [2024-12-02 12:44:02,280 INFO L78 Accepts]: Start accepts. Automaton has 102585 states and 123641 transitions. Word has length 125 [2024-12-02 12:44:02,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:44:02,280 INFO L471 AbstractCegarLoop]: Abstraction has 102585 states and 123641 transitions. [2024-12-02 12:44:02,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 6.735849056603773) internal successors, (357), 53 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:44:02,280 INFO L276 IsEmpty]: Start isEmpty. Operand 102585 states and 123641 transitions. [2024-12-02 12:44:02,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-12-02 12:44:02,283 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:44:02,283 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:44:02,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 12:44:02,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:44:02,484 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:44:02,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:44:02,484 INFO L85 PathProgramCache]: Analyzing trace with hash -513130752, now seen corresponding path program 1 times [2024-12-02 12:44:02,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:44:02,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287163005] [2024-12-02 12:44:02,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:44:02,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:44:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:44:03,921 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 16 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:44:03,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:44:03,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287163005] [2024-12-02 12:44:03,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287163005] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:44:03,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166827155] [2024-12-02 12:44:03,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:44:03,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:44:03,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:44:03,923 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:44:03,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_79da6219-35c7-47ec-8247-8867eee12a01/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 12:44:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:44:04,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-12-02 12:44:04,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:44:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 35 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:44:06,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:44:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 16 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:44:15,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166827155] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:44:15,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:44:15,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 22] total 70 [2024-12-02 12:44:15,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291875640] [2024-12-02 12:44:15,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:44:15,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2024-12-02 12:44:15,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:44:15,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2024-12-02 12:44:15,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=4488, Unknown=0, NotChecked=0, Total=4830 [2024-12-02 12:44:15,119 INFO L87 Difference]: Start difference. First operand 102585 states and 123641 transitions. Second operand has 70 states, 70 states have (on average 5.2) internal successors, (364), 70 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)