./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.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_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/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_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/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_3f983c77-904c-4e3a-9177-e6fb751ebce7/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 cbe797ede424f1ab8a64d91092275cecbbdb84c9d61e688c522ae0087e29fe1c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:56:00,898 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:56:00,955 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 08:56:00,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:56:00,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:56:00,983 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:56:00,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:56:00,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:56:00,984 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:56:00,984 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:56:00,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:56:00,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:56:00,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:56:00,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:56:00,985 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:56:00,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:56:00,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 08:56:00,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:56:00,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:56:00,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:56:00,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:56:00,985 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 08:56:00,985 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:56:00,985 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 08:56:00,986 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:56:00,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 08:56:00,986 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:56:00,986 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:56:00,986 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:56:00,986 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:56:00,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:56:00,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:56:00,986 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:56:00,986 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:56:00,987 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:56:00,987 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:56:00,987 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:56:00,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:56:00,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:56:00,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:56:00,987 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 08:56:00,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 08:56:00,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:56:00,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:56:00,987 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:56:00,987 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:56:00,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:56:00,988 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:56:00,988 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_3f983c77-904c-4e3a-9177-e6fb751ebce7/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 -> cbe797ede424f1ab8a64d91092275cecbbdb84c9d61e688c522ae0087e29fe1c [2024-12-02 08:56:01,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:56:01,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:56:01,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:56:01,238 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:56:01,238 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:56:01,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-12-02 08:56:03,895 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/data/0460d9caf/ee0b2534eeec41c99d62761c4b7ad3b5/FLAGfa7893da4 [2024-12-02 08:56:04,261 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:56:04,262 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-12-02 08:56:04,286 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/data/0460d9caf/ee0b2534eeec41c99d62761c4b7ad3b5/FLAGfa7893da4 [2024-12-02 08:56:04,442 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/data/0460d9caf/ee0b2534eeec41c99d62761c4b7ad3b5 [2024-12-02 08:56:04,444 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:56:04,445 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:56:04,445 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:56:04,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:56:04,448 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:56:04,449 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:56:04" (1/1) ... [2024-12-02 08:56:04,449 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69a4c87f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:04, skipping insertion in model container [2024-12-02 08:56:04,449 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:56:04" (1/1) ... [2024-12-02 08:56:04,529 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:56:04,791 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_3f983c77-904c-4e3a-9177-e6fb751ebce7/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[8786,8799] [2024-12-02 08:56:04,848 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_3f983c77-904c-4e3a-9177-e6fb751ebce7/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[15722,15735] [2024-12-02 08:56:05,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:56:05,448 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:56:05,475 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_3f983c77-904c-4e3a-9177-e6fb751ebce7/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[8786,8799] [2024-12-02 08:56:05,485 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_3f983c77-904c-4e3a-9177-e6fb751ebce7/sv-benchmarks/c/combinations/pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c[15722,15735] [2024-12-02 08:56:05,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:56:05,912 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:56:05,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05 WrapperNode [2024-12-02 08:56:05,913 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:56:05,914 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:56:05,914 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:56:05,914 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:56:05,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05" (1/1) ... [2024-12-02 08:56:05,989 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05" (1/1) ... [2024-12-02 08:56:06,248 INFO L138 Inliner]: procedures = 36, calls = 21, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 5035 [2024-12-02 08:56:06,248 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:56:06,249 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:56:06,249 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:56:06,249 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:56:06,259 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05" (1/1) ... [2024-12-02 08:56:06,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05" (1/1) ... [2024-12-02 08:56:06,305 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05" (1/1) ... [2024-12-02 08:56:06,494 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 08:56:06,494 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05" (1/1) ... [2024-12-02 08:56:06,494 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05" (1/1) ... [2024-12-02 08:56:06,586 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05" (1/1) ... [2024-12-02 08:56:06,599 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05" (1/1) ... [2024-12-02 08:56:06,619 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05" (1/1) ... [2024-12-02 08:56:06,636 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05" (1/1) ... [2024-12-02 08:56:06,646 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05" (1/1) ... [2024-12-02 08:56:06,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:56:06,698 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:56:06,698 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:56:06,698 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:56:06,699 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05" (1/1) ... [2024-12-02 08:56:06,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:56:06,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:56:06,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:56:06,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:56:06,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:56:06,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:56:06,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:56:06,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:56:06,843 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:56:06,844 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:56:11,210 INFO L? ?]: Removed 739 outVars from TransFormulas that were not future-live. [2024-12-02 08:56:11,210 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:56:11,237 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:56:11,237 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 08:56:11,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:56:11 BoogieIcfgContainer [2024-12-02 08:56:11,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:56:11,240 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:56:11,240 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:56:11,245 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:56:11,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:56:04" (1/3) ... [2024-12-02 08:56:11,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790c9586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:56:11, skipping insertion in model container [2024-12-02 08:56:11,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:05" (2/3) ... [2024-12-02 08:56:11,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@790c9586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:56:11, skipping insertion in model container [2024-12-02 08:56:11,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:56:11" (3/3) ... [2024-12-02 08:56:11,248 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c [2024-12-02 08:56:11,262 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:56:11,265 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.4_overflow.ufo.UNBOUNDED.pals+Problem12_label05.c that has 1 procedures, 885 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 08:56:11,336 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:56:11,347 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;@c5b21ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:56:11,348 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 08:56:11,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 0 states have call successors, (0), 0 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 08:56:11,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-02 08:56:11,358 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:11,359 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 08:56:11,359 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:11,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:11,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1141430702, now seen corresponding path program 1 times [2024-12-02 08:56:11,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:11,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639714679] [2024-12-02 08:56:11,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:11,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:11,547 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 08:56:11,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:11,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639714679] [2024-12-02 08:56:11,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639714679] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:11,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:11,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:56:11,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387094635] [2024-12-02 08:56:11,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:11,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:56:11,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:11,565 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:56:11,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:56:11,568 INFO L87 Difference]: Start difference. First operand has 885 states, 882 states have (on average 1.9058956916099774) internal successors, (1681), 884 states have internal predecessors, (1681), 0 states have call successors, (0), 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 08:56:11,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:11,623 INFO L93 Difference]: Finished difference Result 1739 states and 3306 transitions. [2024-12-02 08:56:11,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:56:11,625 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 08:56:11,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:11,638 INFO L225 Difference]: With dead ends: 1739 [2024-12-02 08:56:11,638 INFO L226 Difference]: Without dead ends: 819 [2024-12-02 08:56:11,643 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 08:56:11,645 INFO L435 NwaCegarLoop]: 1612 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, 1612 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 08:56:11,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:56:11,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-12-02 08:56:11,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2024-12-02 08:56:11,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.894736842105263) internal successors, (1548), 818 states have internal predecessors, (1548), 0 states have call successors, (0), 0 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 08:56:11,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1548 transitions. [2024-12-02 08:56:11,710 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1548 transitions. Word has length 22 [2024-12-02 08:56:11,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:11,710 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1548 transitions. [2024-12-02 08:56:11,710 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 08:56:11,710 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1548 transitions. [2024-12-02 08:56:11,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-02 08:56:11,711 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:11,711 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 08:56:11,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:56:11,712 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:11,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:11,712 INFO L85 PathProgramCache]: Analyzing trace with hash 120362348, now seen corresponding path program 1 times [2024-12-02 08:56:11,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:11,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846114504] [2024-12-02 08:56:11,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:11,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:11,896 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 08:56:11,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:11,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846114504] [2024-12-02 08:56:11,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846114504] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:11,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:11,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:56:11,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211163425] [2024-12-02 08:56:11,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:11,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:56:11,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:11,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:56:11,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:56:11,899 INFO L87 Difference]: Start difference. First operand 819 states and 1548 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 08:56:11,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:11,997 INFO L93 Difference]: Finished difference Result 859 states and 1609 transitions. [2024-12-02 08:56:11,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:56:11,997 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 08:56:11,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:12,001 INFO L225 Difference]: With dead ends: 859 [2024-12-02 08:56:12,001 INFO L226 Difference]: Without dead ends: 819 [2024-12-02 08:56:12,002 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 08:56:12,003 INFO L435 NwaCegarLoop]: 1546 mSDtfsCounter, 0 mSDsluCounter, 4610 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6156 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:12,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6156 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:56:12,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2024-12-02 08:56:12,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2024-12-02 08:56:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 817 states have (on average 1.8665850673194615) internal successors, (1525), 818 states have internal predecessors, (1525), 0 states have call successors, (0), 0 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 08:56:12,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1525 transitions. [2024-12-02 08:56:12,026 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1525 transitions. Word has length 22 [2024-12-02 08:56:12,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:12,026 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 1525 transitions. [2024-12-02 08:56:12,026 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 08:56:12,027 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1525 transitions. [2024-12-02 08:56:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-12-02 08:56:12,028 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:12,028 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 08:56:12,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:56:12,028 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:12,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:12,029 INFO L85 PathProgramCache]: Analyzing trace with hash 550762215, now seen corresponding path program 1 times [2024-12-02 08:56:12,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:12,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813725174] [2024-12-02 08:56:12,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:12,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:12,175 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 08:56:12,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:12,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813725174] [2024-12-02 08:56:12,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813725174] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:12,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:12,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:56:12,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043183640] [2024-12-02 08:56:12,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:12,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:56:12,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:12,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:56:12,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:56:12,177 INFO L87 Difference]: Start difference. First operand 819 states and 1525 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 08:56:12,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:12,366 INFO L93 Difference]: Finished difference Result 1107 states and 1981 transitions. [2024-12-02 08:56:12,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 08:56:12,366 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 08:56:12,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:12,371 INFO L225 Difference]: With dead ends: 1107 [2024-12-02 08:56:12,371 INFO L226 Difference]: Without dead ends: 1071 [2024-12-02 08:56:12,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-12-02 08:56:12,373 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 6262 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6262 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:12,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6262 Valid, 2187 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:56:12,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-12-02 08:56:12,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 853. [2024-12-02 08:56:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 851 states have (on average 1.8554641598119859) internal successors, (1579), 852 states have internal predecessors, (1579), 0 states have call successors, (0), 0 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 08:56:12,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1579 transitions. [2024-12-02 08:56:12,399 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1579 transitions. Word has length 44 [2024-12-02 08:56:12,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:12,399 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 1579 transitions. [2024-12-02 08:56:12,399 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 08:56:12,399 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1579 transitions. [2024-12-02 08:56:12,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-02 08:56:12,401 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:12,401 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 08:56:12,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:56:12,401 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:12,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:12,401 INFO L85 PathProgramCache]: Analyzing trace with hash -414187945, now seen corresponding path program 1 times [2024-12-02 08:56:12,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:12,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050695296] [2024-12-02 08:56:12,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:12,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:12,490 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 08:56:12,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:12,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050695296] [2024-12-02 08:56:12,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050695296] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:12,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:12,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:56:12,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204032997] [2024-12-02 08:56:12,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:12,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:56:12,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:12,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:56:12,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:56:12,491 INFO L87 Difference]: Start difference. First operand 853 states and 1579 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 08:56:12,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:12,524 INFO L93 Difference]: Finished difference Result 982 states and 1782 transitions. [2024-12-02 08:56:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:56:12,525 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 08:56:12,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:12,529 INFO L225 Difference]: With dead ends: 982 [2024-12-02 08:56:12,529 INFO L226 Difference]: Without dead ends: 912 [2024-12-02 08:56:12,529 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 08:56:12,530 INFO L435 NwaCegarLoop]: 1523 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:12,530 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1575 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:56:12,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-12-02 08:56:12,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2024-12-02 08:56:12,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8359030837004404) internal successors, (1667), 909 states have internal predecessors, (1667), 0 states have call successors, (0), 0 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 08:56:12,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1667 transitions. [2024-12-02 08:56:12,555 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1667 transitions. Word has length 46 [2024-12-02 08:56:12,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:12,555 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1667 transitions. [2024-12-02 08:56:12,555 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 08:56:12,556 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1667 transitions. [2024-12-02 08:56:12,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-02 08:56:12,557 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:12,557 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 08:56:12,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:56:12,557 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:12,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:12,557 INFO L85 PathProgramCache]: Analyzing trace with hash -347694433, now seen corresponding path program 1 times [2024-12-02 08:56:12,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:12,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334239787] [2024-12-02 08:56:12,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:12,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:12,781 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 08:56:12,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:12,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334239787] [2024-12-02 08:56:12,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334239787] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:12,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:12,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:56:12,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758388764] [2024-12-02 08:56:12,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:12,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:56:12,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:12,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:56:12,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:56:12,782 INFO L87 Difference]: Start difference. First operand 910 states and 1667 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 08:56:12,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:12,906 INFO L93 Difference]: Finished difference Result 1039 states and 1867 transitions. [2024-12-02 08:56:12,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:56:12,907 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 08:56:12,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:12,910 INFO L225 Difference]: With dead ends: 1039 [2024-12-02 08:56:12,911 INFO L226 Difference]: Without dead ends: 912 [2024-12-02 08:56:12,911 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 08:56:12,912 INFO L435 NwaCegarLoop]: 1519 mSDtfsCounter, 5924 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5924 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:12,912 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5924 Valid, 1678 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:56:12,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2024-12-02 08:56:12,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 910. [2024-12-02 08:56:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.8337004405286343) internal successors, (1665), 909 states have internal predecessors, (1665), 0 states have call successors, (0), 0 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 08:56:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1665 transitions. [2024-12-02 08:56:12,936 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1665 transitions. Word has length 46 [2024-12-02 08:56:12,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:12,937 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1665 transitions. [2024-12-02 08:56:12,937 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 08:56:12,937 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1665 transitions. [2024-12-02 08:56:12,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-02 08:56:12,938 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:12,938 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 08:56:12,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:56:12,938 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:12,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:12,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1691651312, now seen corresponding path program 1 times [2024-12-02 08:56:12,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:12,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405269681] [2024-12-02 08:56:12,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:12,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:13,126 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 08:56:13,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:13,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405269681] [2024-12-02 08:56:13,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405269681] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:13,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:13,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 08:56:13,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224428732] [2024-12-02 08:56:13,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:13,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 08:56:13,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:13,128 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 08:56:13,128 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:56:13,128 INFO L87 Difference]: Start difference. First operand 910 states and 1665 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 08:56:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:13,171 INFO L93 Difference]: Finished difference Result 918 states and 1674 transitions. [2024-12-02 08:56:13,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 08:56:13,171 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 08:56:13,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:13,175 INFO L225 Difference]: With dead ends: 918 [2024-12-02 08:56:13,175 INFO L226 Difference]: Without dead ends: 916 [2024-12-02 08:56:13,175 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 08:56:13,176 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 0 mSDsluCounter, 4557 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6079 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 08:56:13,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6079 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:56:13,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2024-12-02 08:56:13,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 916. [2024-12-02 08:56:13,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 914 states have (on average 1.8271334792122538) internal successors, (1670), 915 states have internal predecessors, (1670), 0 states have call successors, (0), 0 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 08:56:13,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 1670 transitions. [2024-12-02 08:56:13,200 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 1670 transitions. Word has length 47 [2024-12-02 08:56:13,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:13,200 INFO L471 AbstractCegarLoop]: Abstraction has 916 states and 1670 transitions. [2024-12-02 08:56:13,200 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 08:56:13,200 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 1670 transitions. [2024-12-02 08:56:13,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 08:56:13,201 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:13,201 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 08:56:13,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:56:13,201 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:13,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:13,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1538886047, now seen corresponding path program 1 times [2024-12-02 08:56:13,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:13,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034409522] [2024-12-02 08:56:13,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:13,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:13,259 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 08:56:13,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:13,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034409522] [2024-12-02 08:56:13,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034409522] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:13,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:13,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:56:13,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103696355] [2024-12-02 08:56:13,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:13,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:56:13,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:13,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:56:13,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:56:13,260 INFO L87 Difference]: Start difference. First operand 916 states and 1670 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 08:56:13,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:13,289 INFO L93 Difference]: Finished difference Result 1062 states and 1891 transitions. [2024-12-02 08:56:13,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:56:13,290 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 08:56:13,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:13,293 INFO L225 Difference]: With dead ends: 1062 [2024-12-02 08:56:13,293 INFO L226 Difference]: Without dead ends: 986 [2024-12-02 08:56:13,294 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 08:56:13,295 INFO L435 NwaCegarLoop]: 1567 mSDtfsCounter, 1486 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1625 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 08:56:13,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:56:13,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2024-12-02 08:56:13,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 984. [2024-12-02 08:56:13,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 984 states, 982 states have (on average 1.8034623217922607) internal successors, (1771), 983 states have internal predecessors, (1771), 0 states have call successors, (0), 0 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 08:56:13,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 984 states to 984 states and 1771 transitions. [2024-12-02 08:56:13,319 INFO L78 Accepts]: Start accepts. Automaton has 984 states and 1771 transitions. Word has length 48 [2024-12-02 08:56:13,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:13,319 INFO L471 AbstractCegarLoop]: Abstraction has 984 states and 1771 transitions. [2024-12-02 08:56:13,319 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 08:56:13,319 INFO L276 IsEmpty]: Start isEmpty. Operand 984 states and 1771 transitions. [2024-12-02 08:56:13,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 08:56:13,320 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:13,320 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 08:56:13,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 08:56:13,320 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:13,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:13,321 INFO L85 PathProgramCache]: Analyzing trace with hash 561679263, now seen corresponding path program 1 times [2024-12-02 08:56:13,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:13,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799206630] [2024-12-02 08:56:13,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:13,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:13,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:13,374 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 08:56:13,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:13,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799206630] [2024-12-02 08:56:13,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799206630] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:13,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:13,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:56:13,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745842711] [2024-12-02 08:56:13,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:13,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:56:13,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:13,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:56:13,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:56:13,376 INFO L87 Difference]: Start difference. First operand 984 states and 1771 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 08:56:13,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:13,407 INFO L93 Difference]: Finished difference Result 1358 states and 2331 transitions. [2024-12-02 08:56:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:56:13,408 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 08:56:13,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:13,412 INFO L225 Difference]: With dead ends: 1358 [2024-12-02 08:56:13,412 INFO L226 Difference]: Without dead ends: 1159 [2024-12-02 08:56:13,413 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 08:56:13,413 INFO L435 NwaCegarLoop]: 1559 mSDtfsCounter, 1482 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1625 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 08:56:13,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1625 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:56:13,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-12-02 08:56:13,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1157. [2024-12-02 08:56:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1155 states have (on average 1.7515151515151515) internal successors, (2023), 1156 states have internal predecessors, (2023), 0 states have call successors, (0), 0 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 08:56:13,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 2023 transitions. [2024-12-02 08:56:13,443 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 2023 transitions. Word has length 48 [2024-12-02 08:56:13,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:13,444 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 2023 transitions. [2024-12-02 08:56:13,444 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 08:56:13,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 2023 transitions. [2024-12-02 08:56:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 08:56:13,466 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:13,466 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 08:56:13,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 08:56:13,466 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:13,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:13,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1952355169, now seen corresponding path program 1 times [2024-12-02 08:56:13,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:13,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330332311] [2024-12-02 08:56:13,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:13,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:13,517 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 08:56:13,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:13,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330332311] [2024-12-02 08:56:13,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330332311] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:13,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:13,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:56:13,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791627326] [2024-12-02 08:56:13,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:13,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:56:13,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:13,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:56:13,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:56:13,519 INFO L87 Difference]: Start difference. First operand 1157 states and 2023 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 08:56:13,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:13,555 INFO L93 Difference]: Finished difference Result 1853 states and 3045 transitions. [2024-12-02 08:56:13,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:56:13,556 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 08:56:13,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:13,561 INFO L225 Difference]: With dead ends: 1853 [2024-12-02 08:56:13,561 INFO L226 Difference]: Without dead ends: 1481 [2024-12-02 08:56:13,562 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 08:56:13,562 INFO L435 NwaCegarLoop]: 1557 mSDtfsCounter, 1480 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1627 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 08:56:13,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1627 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:56:13,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2024-12-02 08:56:13,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2024-12-02 08:56:13,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1477 states have (on average 1.6784021665538253) internal successors, (2479), 1478 states have internal predecessors, (2479), 0 states have call successors, (0), 0 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 08:56:13,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2479 transitions. [2024-12-02 08:56:13,601 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2479 transitions. Word has length 48 [2024-12-02 08:56:13,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:13,601 INFO L471 AbstractCegarLoop]: Abstraction has 1479 states and 2479 transitions. [2024-12-02 08:56:13,601 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 08:56:13,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2479 transitions. [2024-12-02 08:56:13,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 08:56:13,602 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:13,602 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 08:56:13,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 08:56:13,602 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:13,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:13,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1517819233, now seen corresponding path program 1 times [2024-12-02 08:56:13,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:13,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721376678] [2024-12-02 08:56:13,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:13,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:13,647 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 08:56:13,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:13,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721376678] [2024-12-02 08:56:13,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721376678] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:13,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:13,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:56:13,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694799236] [2024-12-02 08:56:13,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:13,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:56:13,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:13,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:56:13,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:56:13,649 INFO L87 Difference]: Start difference. First operand 1479 states and 2479 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 08:56:13,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:13,696 INFO L93 Difference]: Finished difference Result 2771 states and 4329 transitions. [2024-12-02 08:56:13,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:56:13,696 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 08:56:13,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:13,703 INFO L225 Difference]: With dead ends: 2771 [2024-12-02 08:56:13,703 INFO L226 Difference]: Without dead ends: 2077 [2024-12-02 08:56:13,705 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 08:56:13,705 INFO L435 NwaCegarLoop]: 1569 mSDtfsCounter, 1484 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 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 08:56:13,706 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1484 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 08:56:13,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2024-12-02 08:56:13,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2075. [2024-12-02 08:56:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 2073 states have (on average 1.5894838398456343) internal successors, (3295), 2074 states have internal predecessors, (3295), 0 states have call successors, (0), 0 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 08:56:13,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 3295 transitions. [2024-12-02 08:56:13,771 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 3295 transitions. Word has length 48 [2024-12-02 08:56:13,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:13,772 INFO L471 AbstractCegarLoop]: Abstraction has 2075 states and 3295 transitions. [2024-12-02 08:56:13,772 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 08:56:13,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 3295 transitions. [2024-12-02 08:56:13,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 08:56:13,773 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:13,773 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:56:13,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 08:56:13,773 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:13,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:13,773 INFO L85 PathProgramCache]: Analyzing trace with hash -804129467, now seen corresponding path program 1 times [2024-12-02 08:56:13,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:13,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997932479] [2024-12-02 08:56:13,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:13,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:13,901 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 08:56:13,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:13,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997932479] [2024-12-02 08:56:13,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997932479] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:13,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:13,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:56:13,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036271004] [2024-12-02 08:56:13,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:13,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 08:56:13,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:13,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 08:56:13,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 08:56:13,903 INFO L87 Difference]: Start difference. First operand 2075 states and 3295 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:56:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:19,416 INFO L93 Difference]: Finished difference Result 4330 states and 7604 transitions. [2024-12-02 08:56:19,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 08:56:19,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-12-02 08:56:19,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:19,423 INFO L225 Difference]: With dead ends: 4330 [2024-12-02 08:56:19,423 INFO L226 Difference]: Without dead ends: 3577 [2024-12-02 08:56:19,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 08:56:19,425 INFO L435 NwaCegarLoop]: 761 mSDtfsCounter, 2365 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2365 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:19,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2365 Valid, 779 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-12-02 08:56:19,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2024-12-02 08:56:19,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3577. [2024-12-02 08:56:19,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3577 states, 3575 states have (on average 1.513006993006993) internal successors, (5409), 3576 states have internal predecessors, (5409), 0 states have call successors, (0), 0 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 08:56:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 5409 transitions. [2024-12-02 08:56:19,479 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 5409 transitions. Word has length 60 [2024-12-02 08:56:19,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:19,479 INFO L471 AbstractCegarLoop]: Abstraction has 3577 states and 5409 transitions. [2024-12-02 08:56:19,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:56:19,479 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 5409 transitions. [2024-12-02 08:56:19,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 08:56:19,480 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:19,480 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 08:56:19,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 08:56:19,481 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:19,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:19,481 INFO L85 PathProgramCache]: Analyzing trace with hash 879514788, now seen corresponding path program 1 times [2024-12-02 08:56:19,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:19,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955335875] [2024-12-02 08:56:19,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:19,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:19,576 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 08:56:19,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:19,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955335875] [2024-12-02 08:56:19,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955335875] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:19,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:19,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:56:19,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095989708] [2024-12-02 08:56:19,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:19,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:56:19,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:19,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:56:19,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:56:19,577 INFO L87 Difference]: Start difference. First operand 3577 states and 5409 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:56:19,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:19,723 INFO L93 Difference]: Finished difference Result 8667 states and 12598 transitions. [2024-12-02 08:56:19,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:56:19,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2024-12-02 08:56:19,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:19,737 INFO L225 Difference]: With dead ends: 8667 [2024-12-02 08:56:19,737 INFO L226 Difference]: Without dead ends: 7737 [2024-12-02 08:56:19,739 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 08:56:19,740 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 4645 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4645 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:19,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4645 Valid, 3320 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:56:19,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7737 states. [2024-12-02 08:56:19,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7737 to 4689. [2024-12-02 08:56:19,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 4687 states have (on average 1.4851717516535097) internal successors, (6961), 4688 states have internal predecessors, (6961), 0 states have call successors, (0), 0 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 08:56:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 6961 transitions. [2024-12-02 08:56:19,837 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 6961 transitions. Word has length 65 [2024-12-02 08:56:19,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:19,838 INFO L471 AbstractCegarLoop]: Abstraction has 4689 states and 6961 transitions. [2024-12-02 08:56:19,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:56:19,838 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 6961 transitions. [2024-12-02 08:56:19,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 08:56:19,839 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:19,839 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 08:56:19,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 08:56:19,840 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:19,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:19,840 INFO L85 PathProgramCache]: Analyzing trace with hash -97691996, now seen corresponding path program 1 times [2024-12-02 08:56:19,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:19,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048234132] [2024-12-02 08:56:19,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:19,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:19,960 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 08:56:19,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:19,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048234132] [2024-12-02 08:56:19,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048234132] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:19,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:19,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:56:19,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555562329] [2024-12-02 08:56:19,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:19,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:56:19,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:19,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:56:19,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:56:19,962 INFO L87 Difference]: Start difference. First operand 4689 states and 6961 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 08:56:20,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:20,131 INFO L93 Difference]: Finished difference Result 9955 states and 14406 transitions. [2024-12-02 08:56:20,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:56:20,131 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 08:56:20,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:20,154 INFO L225 Difference]: With dead ends: 9955 [2024-12-02 08:56:20,154 INFO L226 Difference]: Without dead ends: 8665 [2024-12-02 08:56:20,157 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 08:56:20,157 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 4681 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 3336 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:20,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4681 Valid, 3336 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:56:20,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8665 states. [2024-12-02 08:56:20,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8665 to 6441. [2024-12-02 08:56:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6441 states, 6439 states have (on average 1.4600093182171145) internal successors, (9401), 6440 states have internal predecessors, (9401), 0 states have call successors, (0), 0 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 08:56:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6441 states to 6441 states and 9401 transitions. [2024-12-02 08:56:20,292 INFO L78 Accepts]: Start accepts. Automaton has 6441 states and 9401 transitions. Word has length 65 [2024-12-02 08:56:20,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:20,293 INFO L471 AbstractCegarLoop]: Abstraction has 6441 states and 9401 transitions. [2024-12-02 08:56:20,293 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 08:56:20,293 INFO L276 IsEmpty]: Start isEmpty. Operand 6441 states and 9401 transitions. [2024-12-02 08:56:20,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 08:56:20,294 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:20,294 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 08:56:20,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 08:56:20,294 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:20,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:20,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1683240868, now seen corresponding path program 1 times [2024-12-02 08:56:20,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:20,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564447890] [2024-12-02 08:56:20,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:20,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:20,382 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 08:56:20,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:20,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564447890] [2024-12-02 08:56:20,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564447890] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:20,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:20,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:56:20,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449308684] [2024-12-02 08:56:20,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:20,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:56:20,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:20,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:56:20,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:56:20,383 INFO L87 Difference]: Start difference. First operand 6441 states and 9401 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 08:56:20,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:20,563 INFO L93 Difference]: Finished difference Result 11243 states and 16206 transitions. [2024-12-02 08:56:20,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:56:20,563 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 08:56:20,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:20,577 INFO L225 Difference]: With dead ends: 11243 [2024-12-02 08:56:20,577 INFO L226 Difference]: Without dead ends: 9953 [2024-12-02 08:56:20,580 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 08:56:20,580 INFO L435 NwaCegarLoop]: 1574 mSDtfsCounter, 4677 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4677 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:20,581 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4677 Valid, 3339 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:56:20,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9953 states. [2024-12-02 08:56:20,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9953 to 7729. [2024-12-02 08:56:20,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7729 states, 7727 states have (on average 1.4495923385531253) internal successors, (11201), 7728 states have internal predecessors, (11201), 0 states have call successors, (0), 0 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 08:56:20,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7729 states to 7729 states and 11201 transitions. [2024-12-02 08:56:20,755 INFO L78 Accepts]: Start accepts. Automaton has 7729 states and 11201 transitions. Word has length 65 [2024-12-02 08:56:20,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:20,755 INFO L471 AbstractCegarLoop]: Abstraction has 7729 states and 11201 transitions. [2024-12-02 08:56:20,756 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 08:56:20,756 INFO L276 IsEmpty]: Start isEmpty. Operand 7729 states and 11201 transitions. [2024-12-02 08:56:20,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 08:56:20,757 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:20,757 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 08:56:20,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 08:56:20,757 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:20,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:20,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2117776804, now seen corresponding path program 1 times [2024-12-02 08:56:20,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:20,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045110968] [2024-12-02 08:56:20,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:20,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:20,840 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 08:56:20,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:20,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045110968] [2024-12-02 08:56:20,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045110968] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:20,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:20,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 08:56:20,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794892138] [2024-12-02 08:56:20,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:20,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 08:56:20,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:20,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 08:56:20,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 08:56:20,841 INFO L87 Difference]: Start difference. First operand 7729 states and 11201 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 08:56:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:21,036 INFO L93 Difference]: Finished difference Result 12531 states and 18006 transitions. [2024-12-02 08:56:21,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 08:56:21,036 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 08:56:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:21,051 INFO L225 Difference]: With dead ends: 12531 [2024-12-02 08:56:21,051 INFO L226 Difference]: Without dead ends: 11241 [2024-12-02 08:56:21,054 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 08:56:21,055 INFO L435 NwaCegarLoop]: 1573 mSDtfsCounter, 4647 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4647 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:21,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4647 Valid, 3375 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 08:56:21,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11241 states. [2024-12-02 08:56:21,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11241 to 9017. [2024-12-02 08:56:21,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9017 states, 9015 states have (on average 1.4421519689406546) internal successors, (13001), 9016 states have internal predecessors, (13001), 0 states have call successors, (0), 0 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 08:56:21,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9017 states to 9017 states and 13001 transitions. [2024-12-02 08:56:21,201 INFO L78 Accepts]: Start accepts. Automaton has 9017 states and 13001 transitions. Word has length 65 [2024-12-02 08:56:21,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:21,201 INFO L471 AbstractCegarLoop]: Abstraction has 9017 states and 13001 transitions. [2024-12-02 08:56:21,201 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 08:56:21,201 INFO L276 IsEmpty]: Start isEmpty. Operand 9017 states and 13001 transitions. [2024-12-02 08:56:21,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 08:56:21,202 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:21,202 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] [2024-12-02 08:56:21,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 08:56:21,203 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:21,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:21,203 INFO L85 PathProgramCache]: Analyzing trace with hash -999421060, now seen corresponding path program 1 times [2024-12-02 08:56:21,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:21,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812888466] [2024-12-02 08:56:21,203 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:21,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:21,268 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 08:56:21,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:21,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812888466] [2024-12-02 08:56:21,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812888466] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:21,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:21,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:56:21,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564910174] [2024-12-02 08:56:21,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:21,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:56:21,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:21,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:56:21,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:56:21,270 INFO L87 Difference]: Start difference. First operand 9017 states and 13001 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:56:21,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:21,419 INFO L93 Difference]: Finished difference Result 15749 states and 22419 transitions. [2024-12-02 08:56:21,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:56:21,420 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-12-02 08:56:21,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:21,437 INFO L225 Difference]: With dead ends: 15749 [2024-12-02 08:56:21,437 INFO L226 Difference]: Without dead ends: 9019 [2024-12-02 08:56:21,442 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 08:56:21,443 INFO L435 NwaCegarLoop]: 1551 mSDtfsCounter, 37 mSDsluCounter, 1513 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3064 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 08:56:21,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 3064 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:56:21,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9019 states. [2024-12-02 08:56:21,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9019 to 9017. [2024-12-02 08:56:21,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9017 states, 9015 states have (on average 1.4283971159179145) internal successors, (12877), 9016 states have internal predecessors, (12877), 0 states have call successors, (0), 0 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 08:56:21,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9017 states to 9017 states and 12877 transitions. [2024-12-02 08:56:21,653 INFO L78 Accepts]: Start accepts. Automaton has 9017 states and 12877 transitions. Word has length 66 [2024-12-02 08:56:21,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:21,653 INFO L471 AbstractCegarLoop]: Abstraction has 9017 states and 12877 transitions. [2024-12-02 08:56:21,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:56:21,654 INFO L276 IsEmpty]: Start isEmpty. Operand 9017 states and 12877 transitions. [2024-12-02 08:56:21,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 08:56:21,655 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:21,655 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 08:56:21,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 08:56:21,655 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:21,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:21,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1980195300, now seen corresponding path program 1 times [2024-12-02 08:56:21,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:21,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407592499] [2024-12-02 08:56:21,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:21,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:21,742 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 08:56:21,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:21,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407592499] [2024-12-02 08:56:21,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407592499] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:21,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:21,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:56:21,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105614427] [2024-12-02 08:56:21,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:21,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:56:21,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:21,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:56:21,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:56:21,744 INFO L87 Difference]: Start difference. First operand 9017 states and 12877 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 08:56:21,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:21,826 INFO L93 Difference]: Finished difference Result 11590 states and 16461 transitions. [2024-12-02 08:56:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:56:21,827 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 08:56:21,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:21,837 INFO L225 Difference]: With dead ends: 11590 [2024-12-02 08:56:21,837 INFO L226 Difference]: Without dead ends: 4860 [2024-12-02 08:56:21,842 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 08:56:21,843 INFO L435 NwaCegarLoop]: 1549 mSDtfsCounter, 31 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3061 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 08:56:21,843 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3061 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:56:21,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4860 states. [2024-12-02 08:56:21,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4860 to 4852. [2024-12-02 08:56:21,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4850 states have (on average 1.4672164948453608) internal successors, (7116), 4851 states have internal predecessors, (7116), 0 states have call successors, (0), 0 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 08:56:21,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 7116 transitions. [2024-12-02 08:56:21,935 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 7116 transitions. Word has length 67 [2024-12-02 08:56:21,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:21,935 INFO L471 AbstractCegarLoop]: Abstraction has 4852 states and 7116 transitions. [2024-12-02 08:56:21,936 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 08:56:21,936 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 7116 transitions. [2024-12-02 08:56:21,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 08:56:21,937 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:21,937 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] [2024-12-02 08:56:21,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 08:56:21,937 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:21,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:21,937 INFO L85 PathProgramCache]: Analyzing trace with hash 823701102, now seen corresponding path program 1 times [2024-12-02 08:56:21,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:21,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319014683] [2024-12-02 08:56:21,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:21,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:22,021 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 08:56:22,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:22,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319014683] [2024-12-02 08:56:22,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319014683] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:22,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:22,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:56:22,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861352701] [2024-12-02 08:56:22,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:22,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:56:22,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:22,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:56:22,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:56:22,023 INFO L87 Difference]: Start difference. First operand 4852 states and 7116 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 08:56:22,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:22,070 INFO L93 Difference]: Finished difference Result 6132 states and 8878 transitions. [2024-12-02 08:56:22,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:56:22,070 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 08:56:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:22,078 INFO L225 Difference]: With dead ends: 6132 [2024-12-02 08:56:22,078 INFO L226 Difference]: Without dead ends: 3578 [2024-12-02 08:56:22,080 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 08:56:22,081 INFO L435 NwaCegarLoop]: 1543 mSDtfsCounter, 33 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3040 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 08:56:22,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3040 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:56:22,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3578 states. [2024-12-02 08:56:22,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3578 to 3576. [2024-12-02 08:56:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3576 states, 3574 states have (on average 1.4924454392837156) internal successors, (5334), 3575 states have internal predecessors, (5334), 0 states have call successors, (0), 0 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 08:56:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3576 states to 3576 states and 5334 transitions. [2024-12-02 08:56:22,145 INFO L78 Accepts]: Start accepts. Automaton has 3576 states and 5334 transitions. Word has length 68 [2024-12-02 08:56:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:22,146 INFO L471 AbstractCegarLoop]: Abstraction has 3576 states and 5334 transitions. [2024-12-02 08:56:22,146 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 08:56:22,146 INFO L276 IsEmpty]: Start isEmpty. Operand 3576 states and 5334 transitions. [2024-12-02 08:56:22,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 08:56:22,147 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:22,147 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] [2024-12-02 08:56:22,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 08:56:22,147 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:22,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:22,147 INFO L85 PathProgramCache]: Analyzing trace with hash -447735840, now seen corresponding path program 1 times [2024-12-02 08:56:22,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:22,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917632612] [2024-12-02 08:56:22,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:22,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:22,226 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 08:56:22,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:22,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917632612] [2024-12-02 08:56:22,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917632612] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:22,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:22,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 08:56:22,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847309227] [2024-12-02 08:56:22,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:22,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 08:56:22,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:22,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 08:56:22,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 08:56:22,227 INFO L87 Difference]: Start difference. First operand 3576 states and 5334 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 08:56:22,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:22,274 INFO L93 Difference]: Finished difference Result 4218 states and 6205 transitions. [2024-12-02 08:56:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 08:56:22,275 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 08:56:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:22,280 INFO L225 Difference]: With dead ends: 4218 [2024-12-02 08:56:22,280 INFO L226 Difference]: Without dead ends: 2940 [2024-12-02 08:56:22,281 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 08:56:22,282 INFO L435 NwaCegarLoop]: 1536 mSDtfsCounter, 30 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3025 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 08:56:22,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3025 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 08:56:22,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2024-12-02 08:56:22,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2938. [2024-12-02 08:56:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2936 states have (on average 1.5170299727520435) internal successors, (4454), 2937 states have internal predecessors, (4454), 0 states have call successors, (0), 0 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 08:56:22,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 4454 transitions. [2024-12-02 08:56:22,348 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 4454 transitions. Word has length 70 [2024-12-02 08:56:22,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:22,348 INFO L471 AbstractCegarLoop]: Abstraction has 2938 states and 4454 transitions. [2024-12-02 08:56:22,348 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 08:56:22,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 4454 transitions. [2024-12-02 08:56:22,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 08:56:22,350 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:22,350 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] [2024-12-02 08:56:22,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 08:56:22,350 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:22,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:22,351 INFO L85 PathProgramCache]: Analyzing trace with hash -164665390, now seen corresponding path program 1 times [2024-12-02 08:56:22,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:22,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697596177] [2024-12-02 08:56:22,351 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:22,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:24,134 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 08:56:24,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:24,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697596177] [2024-12-02 08:56:24,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697596177] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:56:24,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144306690] [2024-12-02 08:56:24,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:24,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:56:24,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:56:24,136 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:56:24,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:56:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:24,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 08:56:24,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:56:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:56:24,560 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:56:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:56:24,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144306690] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:56:24,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:56:24,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 6] total 22 [2024-12-02 08:56:24,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039323193] [2024-12-02 08:56:24,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:56:24,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 08:56:24,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:24,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 08:56:24,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-12-02 08:56:24,868 INFO L87 Difference]: Start difference. First operand 2938 states and 4454 transitions. Second operand has 22 states, 22 states have (on average 9.227272727272727) internal successors, (203), 22 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 08:56:30,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:30,353 INFO L93 Difference]: Finished difference Result 8619 states and 11895 transitions. [2024-12-02 08:56:30,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-12-02 08:56:30,353 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.227272727272727) internal successors, (203), 22 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 72 [2024-12-02 08:56:30,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:30,362 INFO L225 Difference]: With dead ends: 8619 [2024-12-02 08:56:30,362 INFO L226 Difference]: Without dead ends: 7905 [2024-12-02 08:56:30,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4129 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1855, Invalid=9487, Unknown=0, NotChecked=0, Total=11342 [2024-12-02 08:56:30,365 INFO L435 NwaCegarLoop]: 1519 mSDtfsCounter, 13639 mSDsluCounter, 7959 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13639 SdHoareTripleChecker+Valid, 9478 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:30,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13639 Valid, 9478 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 08:56:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7905 states. [2024-12-02 08:56:30,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7905 to 7233. [2024-12-02 08:56:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7233 states, 7231 states have (on average 1.3807218918545152) internal successors, (9984), 7232 states have internal predecessors, (9984), 0 states have call successors, (0), 0 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 08:56:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7233 states to 7233 states and 9984 transitions. [2024-12-02 08:56:30,500 INFO L78 Accepts]: Start accepts. Automaton has 7233 states and 9984 transitions. Word has length 72 [2024-12-02 08:56:30,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:30,501 INFO L471 AbstractCegarLoop]: Abstraction has 7233 states and 9984 transitions. [2024-12-02 08:56:30,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.227272727272727) internal successors, (203), 22 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 08:56:30,501 INFO L276 IsEmpty]: Start isEmpty. Operand 7233 states and 9984 transitions. [2024-12-02 08:56:30,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 08:56:30,502 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:30,502 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] [2024-12-02 08:56:30,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:56:30,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:56:30,703 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:30,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:30,703 INFO L85 PathProgramCache]: Analyzing trace with hash -370729224, now seen corresponding path program 1 times [2024-12-02 08:56:30,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:30,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822964807] [2024-12-02 08:56:30,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:30,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:30,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:32,395 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 08:56:32,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:32,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822964807] [2024-12-02 08:56:32,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822964807] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:56:32,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384163697] [2024-12-02 08:56:32,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:32,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:56:32,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:56:32,397 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:56:32,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:56:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:32,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 08:56:32,502 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:56:33,019 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 08:56:33,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:56:33,993 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 08:56:33,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384163697] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:56:33,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:56:33,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 31 [2024-12-02 08:56:33,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787056750] [2024-12-02 08:56:33,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:56:33,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 08:56:33,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:33,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 08:56:33,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=776, Unknown=0, NotChecked=0, Total=930 [2024-12-02 08:56:33,995 INFO L87 Difference]: Start difference. First operand 7233 states and 9984 transitions. Second operand has 31 states, 31 states have (on average 6.419354838709677) internal successors, (199), 31 states have internal predecessors, (199), 0 states have call successors, (0), 0 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 08:56:34,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:34,961 INFO L93 Difference]: Finished difference Result 17341 states and 23136 transitions. [2024-12-02 08:56:34,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 08:56:34,961 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.419354838709677) internal successors, (199), 31 states have internal predecessors, (199), 0 states have call successors, (0), 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 73 [2024-12-02 08:56:34,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:34,977 INFO L225 Difference]: With dead ends: 17341 [2024-12-02 08:56:34,977 INFO L226 Difference]: Without dead ends: 12525 [2024-12-02 08:56:34,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=398, Invalid=1408, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 08:56:34,984 INFO L435 NwaCegarLoop]: 1500 mSDtfsCounter, 16611 mSDsluCounter, 7850 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16611 SdHoareTripleChecker+Valid, 9350 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:34,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16611 Valid, 9350 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 08:56:34,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12525 states. [2024-12-02 08:56:35,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12525 to 12373. [2024-12-02 08:56:35,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12373 states, 12371 states have (on average 1.3302077439172257) internal successors, (16456), 12372 states have internal predecessors, (16456), 0 states have call successors, (0), 0 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 08:56:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12373 states to 12373 states and 16456 transitions. [2024-12-02 08:56:35,266 INFO L78 Accepts]: Start accepts. Automaton has 12373 states and 16456 transitions. Word has length 73 [2024-12-02 08:56:35,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:35,266 INFO L471 AbstractCegarLoop]: Abstraction has 12373 states and 16456 transitions. [2024-12-02 08:56:35,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.419354838709677) internal successors, (199), 31 states have internal predecessors, (199), 0 states have call successors, (0), 0 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 08:56:35,267 INFO L276 IsEmpty]: Start isEmpty. Operand 12373 states and 16456 transitions. [2024-12-02 08:56:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 08:56:35,268 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:35,268 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] [2024-12-02 08:56:35,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:56:35,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:56:35,469 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:35,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:35,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1110377720, now seen corresponding path program 1 times [2024-12-02 08:56:35,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:35,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689213457] [2024-12-02 08:56:35,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:35,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:35,805 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 08:56:35,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:35,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689213457] [2024-12-02 08:56:35,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689213457] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:56:35,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953453375] [2024-12-02 08:56:35,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:35,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:56:35,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:56:35,807 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:56:35,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:56:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:35,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 08:56:35,928 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:56:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:56:36,255 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:56:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:56:36,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953453375] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:56:36,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:56:36,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2024-12-02 08:56:36,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934206993] [2024-12-02 08:56:36,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:56:36,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 08:56:36,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:36,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 08:56:36,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-12-02 08:56:36,893 INFO L87 Difference]: Start difference. First operand 12373 states and 16456 transitions. Second operand has 25 states, 25 states have (on average 7.16) internal successors, (179), 24 states have internal predecessors, (179), 0 states have call successors, (0), 0 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 08:56:39,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:39,039 INFO L93 Difference]: Finished difference Result 51903 states and 67371 transitions. [2024-12-02 08:56:39,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 08:56:39,040 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.16) internal successors, (179), 24 states have internal predecessors, (179), 0 states have call successors, (0), 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 73 [2024-12-02 08:56:39,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:39,067 INFO L225 Difference]: With dead ends: 51903 [2024-12-02 08:56:39,067 INFO L226 Difference]: Without dead ends: 41883 [2024-12-02 08:56:39,077 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=580, Invalid=2176, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 08:56:39,079 INFO L435 NwaCegarLoop]: 1521 mSDtfsCounter, 20085 mSDsluCounter, 6773 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20085 SdHoareTripleChecker+Valid, 8294 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:39,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20085 Valid, 8294 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 08:56:39,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41883 states. [2024-12-02 08:56:40,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41883 to 41327. [2024-12-02 08:56:40,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41327 states, 41325 states have (on average 1.2727162734422262) internal successors, (52595), 41326 states have internal predecessors, (52595), 0 states have call successors, (0), 0 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 08:56:40,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41327 states to 41327 states and 52595 transitions. [2024-12-02 08:56:40,154 INFO L78 Accepts]: Start accepts. Automaton has 41327 states and 52595 transitions. Word has length 73 [2024-12-02 08:56:40,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:40,154 INFO L471 AbstractCegarLoop]: Abstraction has 41327 states and 52595 transitions. [2024-12-02 08:56:40,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.16) internal successors, (179), 24 states have internal predecessors, (179), 0 states have call successors, (0), 0 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 08:56:40,154 INFO L276 IsEmpty]: Start isEmpty. Operand 41327 states and 52595 transitions. [2024-12-02 08:56:40,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 08:56:40,155 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:40,155 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] [2024-12-02 08:56:40,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 08:56:40,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:56:40,356 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:40,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:40,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1338386780, now seen corresponding path program 1 times [2024-12-02 08:56:40,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:40,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608158722] [2024-12-02 08:56:40,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:40,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:40,718 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 08:56:40,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:40,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608158722] [2024-12-02 08:56:40,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608158722] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:56:40,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782043210] [2024-12-02 08:56:40,718 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:40,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:56:40,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:56:40,722 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:56:40,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:56:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:40,869 INFO L256 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 08:56:40,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:56:41,444 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 08:56:41,444 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:56:42,235 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 08:56:42,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782043210] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:56:42,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:56:42,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 13] total 30 [2024-12-02 08:56:42,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858558785] [2024-12-02 08:56:42,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:56:42,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 08:56:42,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:42,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 08:56:42,236 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2024-12-02 08:56:42,236 INFO L87 Difference]: Start difference. First operand 41327 states and 52595 transitions. Second operand has 30 states, 30 states have (on average 6.4) internal successors, (192), 30 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 08:56:44,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:44,090 INFO L93 Difference]: Finished difference Result 80201 states and 101767 transitions. [2024-12-02 08:56:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 08:56:44,090 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.4) internal successors, (192), 30 states have internal predecessors, (192), 0 states have call successors, (0), 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 08:56:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:44,131 INFO L225 Difference]: With dead ends: 80201 [2024-12-02 08:56:44,132 INFO L226 Difference]: Without dead ends: 43011 [2024-12-02 08:56:44,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=468, Invalid=1512, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 08:56:44,158 INFO L435 NwaCegarLoop]: 1513 mSDtfsCounter, 14942 mSDsluCounter, 7885 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14942 SdHoareTripleChecker+Valid, 9398 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:44,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14942 Valid, 9398 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:56:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43011 states. [2024-12-02 08:56:45,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43011 to 40527. [2024-12-02 08:56:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40527 states, 40525 states have (on average 1.2622085132634175) internal successors, (51151), 40526 states have internal predecessors, (51151), 0 states have call successors, (0), 0 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 08:56:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40527 states to 40527 states and 51151 transitions. [2024-12-02 08:56:45,395 INFO L78 Accepts]: Start accepts. Automaton has 40527 states and 51151 transitions. Word has length 74 [2024-12-02 08:56:45,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:45,395 INFO L471 AbstractCegarLoop]: Abstraction has 40527 states and 51151 transitions. [2024-12-02 08:56:45,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.4) internal successors, (192), 30 states have internal predecessors, (192), 0 states have call successors, (0), 0 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 08:56:45,395 INFO L276 IsEmpty]: Start isEmpty. Operand 40527 states and 51151 transitions. [2024-12-02 08:56:45,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 08:56:45,397 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:45,397 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 08:56:45,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 08:56:45,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 08:56:45,597 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:45,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:45,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1997806360, now seen corresponding path program 1 times [2024-12-02 08:56:45,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:45,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597628388] [2024-12-02 08:56:45,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:45,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:46,110 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 08:56:46,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:46,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597628388] [2024-12-02 08:56:46,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597628388] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:56:46,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002460949] [2024-12-02 08:56:46,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:46,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:56:46,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:56:46,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:56:46,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 08:56:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:46,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 08:56:46,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:56:49,582 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 08:56:49,582 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:56:50,838 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 08:56:50,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002460949] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:56:50,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:56:50,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 41 [2024-12-02 08:56:50,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958154271] [2024-12-02 08:56:50,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:56:50,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-02 08:56:50,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:50,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-02 08:56:50,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1427, Unknown=0, NotChecked=0, Total=1640 [2024-12-02 08:56:50,840 INFO L87 Difference]: Start difference. First operand 40527 states and 51151 transitions. Second operand has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 41 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 08:56:53,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:56:53,730 INFO L93 Difference]: Finished difference Result 58423 states and 73339 transitions. [2024-12-02 08:56:53,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-12-02 08:56:53,731 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 41 states have internal predecessors, (191), 0 states have call successors, (0), 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 08:56:53,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:56:53,762 INFO L225 Difference]: With dead ends: 58423 [2024-12-02 08:56:53,762 INFO L226 Difference]: Without dead ends: 44957 [2024-12-02 08:56:53,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 122 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=819, Invalid=3213, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 08:56:53,774 INFO L435 NwaCegarLoop]: 1500 mSDtfsCounter, 11076 mSDsluCounter, 17956 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11076 SdHoareTripleChecker+Valid, 19456 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 08:56:53,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11076 Valid, 19456 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 08:56:53,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44957 states. [2024-12-02 08:56:54,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44957 to 37487. [2024-12-02 08:56:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37487 states, 37485 states have (on average 1.2611711351207149) internal successors, (47275), 37486 states have internal predecessors, (47275), 0 states have call successors, (0), 0 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 08:56:54,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37487 states to 37487 states and 47275 transitions. [2024-12-02 08:56:54,837 INFO L78 Accepts]: Start accepts. Automaton has 37487 states and 47275 transitions. Word has length 75 [2024-12-02 08:56:54,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:56:54,838 INFO L471 AbstractCegarLoop]: Abstraction has 37487 states and 47275 transitions. [2024-12-02 08:56:54,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 4.658536585365853) internal successors, (191), 41 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 08:56:54,838 INFO L276 IsEmpty]: Start isEmpty. Operand 37487 states and 47275 transitions. [2024-12-02 08:56:54,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 08:56:54,839 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:56:54,839 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 08:56:54,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 08:56:55,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 08:56:55,039 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:56:55,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:55,040 INFO L85 PathProgramCache]: Analyzing trace with hash 542917572, now seen corresponding path program 1 times [2024-12-02 08:56:55,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:55,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195842861] [2024-12-02 08:56:55,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:55,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:55,608 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 08:56:55,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:55,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195842861] [2024-12-02 08:56:55,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195842861] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:56:55,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632750859] [2024-12-02 08:56:55,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:55,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:56:55,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:56:55,611 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:56:55,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 08:56:55,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:55,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-02 08:56:55,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:56:56,455 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:56:56,455 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:56:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:56:57,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632750859] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:56:57,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:56:57,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 36 [2024-12-02 08:56:57,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371140607] [2024-12-02 08:56:57,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:56:57,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 08:56:57,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:57,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 08:56:57,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1142, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 08:56:57,400 INFO L87 Difference]: Start difference. First operand 37487 states and 47275 transitions. Second operand has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 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 08:57:09,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:57:09,197 INFO L93 Difference]: Finished difference Result 104939 states and 131614 transitions. [2024-12-02 08:57:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-12-02 08:57:09,197 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 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 08:57:09,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:57:09,259 INFO L225 Difference]: With dead ends: 104939 [2024-12-02 08:57:09,259 INFO L226 Difference]: Without dead ends: 84365 [2024-12-02 08:57:09,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8651 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=4417, Invalid=19453, Unknown=0, NotChecked=0, Total=23870 [2024-12-02 08:57:09,279 INFO L435 NwaCegarLoop]: 1510 mSDtfsCounter, 19123 mSDsluCounter, 22878 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19123 SdHoareTripleChecker+Valid, 24388 SdHoareTripleChecker+Invalid, 2042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 08:57:09,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19123 Valid, 24388 Invalid, 2042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 08:57:09,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84365 states. [2024-12-02 08:57:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84365 to 30057. [2024-12-02 08:57:10,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30057 states, 30055 states have (on average 1.2636832473798036) internal successors, (37980), 30056 states have internal predecessors, (37980), 0 states have call successors, (0), 0 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 08:57:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30057 states to 30057 states and 37980 transitions. [2024-12-02 08:57:10,477 INFO L78 Accepts]: Start accepts. Automaton has 30057 states and 37980 transitions. Word has length 75 [2024-12-02 08:57:10,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:57:10,477 INFO L471 AbstractCegarLoop]: Abstraction has 30057 states and 37980 transitions. [2024-12-02 08:57:10,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.5) internal successors, (198), 36 states have internal predecessors, (198), 0 states have call successors, (0), 0 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 08:57:10,478 INFO L276 IsEmpty]: Start isEmpty. Operand 30057 states and 37980 transitions. [2024-12-02 08:57:10,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 08:57:10,478 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:57:10,478 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] [2024-12-02 08:57:10,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 08:57:10,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 08:57:10,679 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:57:10,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:10,679 INFO L85 PathProgramCache]: Analyzing trace with hash -684367234, now seen corresponding path program 1 times [2024-12-02 08:57:10,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:57:10,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218849157] [2024-12-02 08:57:10,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:10,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:57:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:12,252 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 08:57:12,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:57:12,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218849157] [2024-12-02 08:57:12,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218849157] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:57:12,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593716522] [2024-12-02 08:57:12,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:12,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:12,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:57:12,254 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:57:12,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 08:57:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:12,366 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-02 08:57:12,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:57:16,134 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 08:57:16,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:57:21,607 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 08:57:21,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593716522] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:57:21,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:57:21,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 28, 21] total 72 [2024-12-02 08:57:21,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578601045] [2024-12-02 08:57:21,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:57:21,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-12-02 08:57:21,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:57:21,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-12-02 08:57:21,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=617, Invalid=4495, Unknown=0, NotChecked=0, Total=5112 [2024-12-02 08:57:21,610 INFO L87 Difference]: Start difference. First operand 30057 states and 37980 transitions. Second operand has 72 states, 72 states have (on average 2.9166666666666665) internal successors, (210), 72 states have internal predecessors, (210), 0 states have call successors, (0), 0 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 08:59:18,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:59:18,280 INFO L93 Difference]: Finished difference Result 96013 states and 120646 transitions. [2024-12-02 08:59:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 307 states. [2024-12-02 08:59:18,281 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.9166666666666665) internal successors, (210), 72 states have internal predecessors, (210), 0 states have call successors, (0), 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 08:59:18,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:59:18,345 INFO L225 Difference]: With dead ends: 96013 [2024-12-02 08:59:18,345 INFO L226 Difference]: Without dead ends: 88801 [2024-12-02 08:59:18,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 374 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59032 ImplicationChecksByTransitivity, 108.9s TimeCoverageRelationStatistics Valid=20631, Invalid=120369, Unknown=0, NotChecked=0, Total=141000 [2024-12-02 08:59:18,375 INFO L435 NwaCegarLoop]: 1568 mSDtfsCounter, 34734 mSDsluCounter, 24910 mSDsCounter, 0 mSdLazyCounter, 8170 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34734 SdHoareTripleChecker+Valid, 26478 SdHoareTripleChecker+Invalid, 8420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 8170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:59:18,375 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34734 Valid, 26478 Invalid, 8420 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [250 Valid, 8170 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-12-02 08:59:18,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88801 states. [2024-12-02 08:59:20,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88801 to 34832. [2024-12-02 08:59:20,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34832 states, 34830 states have (on average 1.2570772322710306) internal successors, (43784), 34831 states have internal predecessors, (43784), 0 states have call successors, (0), 0 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 08:59:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34832 states to 34832 states and 43784 transitions. [2024-12-02 08:59:20,123 INFO L78 Accepts]: Start accepts. Automaton has 34832 states and 43784 transitions. Word has length 76 [2024-12-02 08:59:20,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:59:20,123 INFO L471 AbstractCegarLoop]: Abstraction has 34832 states and 43784 transitions. [2024-12-02 08:59:20,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.9166666666666665) internal successors, (210), 72 states have internal predecessors, (210), 0 states have call successors, (0), 0 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 08:59:20,124 INFO L276 IsEmpty]: Start isEmpty. Operand 34832 states and 43784 transitions. [2024-12-02 08:59:20,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-12-02 08:59:20,124 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:59:20,124 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] [2024-12-02 08:59:20,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-12-02 08:59:20,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:59:20,325 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:59:20,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:59:20,325 INFO L85 PathProgramCache]: Analyzing trace with hash 823031838, now seen corresponding path program 1 times [2024-12-02 08:59:20,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:59:20,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77222354] [2024-12-02 08:59:20,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:20,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:59:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:59:20,875 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 08:59:20,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:59:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77222354] [2024-12-02 08:59:20,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77222354] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:59:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744669262] [2024-12-02 08:59:20,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:20,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:59:20,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:59:20,876 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:59:20,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 08:59:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:59:20,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-02 08:59:20,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:59:24,669 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 08:59:24,669 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:59:29,550 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 08:59:29,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744669262] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:59:29,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:59:29,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 21, 24] total 55 [2024-12-02 08:59:29,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539714753] [2024-12-02 08:59:29,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:59:29,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-02 08:59:29,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:59:29,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-02 08:59:29,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=2540, Unknown=0, NotChecked=0, Total=2970 [2024-12-02 08:59:29,553 INFO L87 Difference]: Start difference. First operand 34832 states and 43784 transitions. Second operand has 55 states, 55 states have (on average 3.4727272727272727) internal successors, (191), 55 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 08:59:40,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:59:40,970 INFO L93 Difference]: Finished difference Result 52424 states and 65927 transitions. [2024-12-02 08:59:40,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-12-02 08:59:40,970 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.4727272727272727) internal successors, (191), 55 states have internal predecessors, (191), 0 states have call successors, (0), 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 08:59:40,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:59:40,995 INFO L225 Difference]: With dead ends: 52424 [2024-12-02 08:59:40,995 INFO L226 Difference]: Without dead ends: 36456 [2024-12-02 08:59:41,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2994 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=2837, Invalid=9819, Unknown=0, NotChecked=0, Total=12656 [2024-12-02 08:59:41,004 INFO L435 NwaCegarLoop]: 1539 mSDtfsCounter, 24901 mSDsluCounter, 24630 mSDsCounter, 0 mSdLazyCounter, 2535 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24901 SdHoareTripleChecker+Valid, 26169 SdHoareTripleChecker+Invalid, 2609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:59:41,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24901 Valid, 26169 Invalid, 2609 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 2535 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-02 08:59:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36456 states. [2024-12-02 08:59:42,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36456 to 24902. [2024-12-02 08:59:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24902 states, 24900 states have (on average 1.2653413654618475) internal successors, (31507), 24901 states have internal predecessors, (31507), 0 states have call successors, (0), 0 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 08:59:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24902 states to 24902 states and 31507 transitions. [2024-12-02 08:59:42,261 INFO L78 Accepts]: Start accepts. Automaton has 24902 states and 31507 transitions. Word has length 77 [2024-12-02 08:59:42,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:59:42,261 INFO L471 AbstractCegarLoop]: Abstraction has 24902 states and 31507 transitions. [2024-12-02 08:59:42,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.4727272727272727) internal successors, (191), 55 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 08:59:42,261 INFO L276 IsEmpty]: Start isEmpty. Operand 24902 states and 31507 transitions. [2024-12-02 08:59:42,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 08:59:42,263 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:59:42,264 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:59:42,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 08:59:42,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 08:59:42,464 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:59:42,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:59:42,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1357442190, now seen corresponding path program 1 times [2024-12-02 08:59:42,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:59:42,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595044047] [2024-12-02 08:59:42,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:42,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:59:42,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:59:42,935 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:59:42,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:59:42,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595044047] [2024-12-02 08:59:42,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595044047] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:59:42,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935822306] [2024-12-02 08:59:42,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:42,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:59:42,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:59:42,937 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:59:42,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 08:59:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:59:43,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 08:59:43,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:59:43,778 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 33 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:59:43,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:59:45,615 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 31 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:59:45,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935822306] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:59:45,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:59:45,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2024-12-02 08:59:45,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062230012] [2024-12-02 08:59:45,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:59:45,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 08:59:45,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:59:45,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 08:59:45,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-12-02 08:59:45,617 INFO L87 Difference]: Start difference. First operand 24902 states and 31507 transitions. Second operand has 26 states, 26 states have (on average 10.23076923076923) internal successors, (266), 25 states have internal predecessors, (266), 0 states have call successors, (0), 0 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 08:59:47,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 08:59:47,730 INFO L93 Difference]: Finished difference Result 37357 states and 47081 transitions. [2024-12-02 08:59:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 08:59:47,731 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.23076923076923) internal successors, (266), 25 states have internal predecessors, (266), 0 states have call successors, (0), 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 121 [2024-12-02 08:59:47,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 08:59:47,759 INFO L225 Difference]: With dead ends: 37357 [2024-12-02 08:59:47,759 INFO L226 Difference]: Without dead ends: 26256 [2024-12-02 08:59:47,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=323, Invalid=1159, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 08:59:47,771 INFO L435 NwaCegarLoop]: 1527 mSDtfsCounter, 12015 mSDsluCounter, 12312 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12015 SdHoareTripleChecker+Valid, 13839 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 08:59:47,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12015 Valid, 13839 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 08:59:47,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26256 states. [2024-12-02 08:59:48,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26256 to 24902. [2024-12-02 08:59:48,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24902 states, 24900 states have (on average 1.2572690763052208) internal successors, (31306), 24901 states have internal predecessors, (31306), 0 states have call successors, (0), 0 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 08:59:48,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24902 states to 24902 states and 31306 transitions. [2024-12-02 08:59:48,993 INFO L78 Accepts]: Start accepts. Automaton has 24902 states and 31306 transitions. Word has length 121 [2024-12-02 08:59:48,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 08:59:48,994 INFO L471 AbstractCegarLoop]: Abstraction has 24902 states and 31306 transitions. [2024-12-02 08:59:48,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.23076923076923) internal successors, (266), 25 states have internal predecessors, (266), 0 states have call successors, (0), 0 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 08:59:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 24902 states and 31306 transitions. [2024-12-02 08:59:48,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 08:59:48,998 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 08:59:48,998 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] [2024-12-02 08:59:49,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 08:59:49,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 08:59:49,198 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 08:59:49,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:59:49,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1591585104, now seen corresponding path program 1 times [2024-12-02 08:59:49,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:59:49,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145193618] [2024-12-02 08:59:49,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:49,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:59:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:59:49,815 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 44 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:59:49,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:59:49,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145193618] [2024-12-02 08:59:49,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145193618] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 08:59:49,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369101413] [2024-12-02 08:59:49,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:59:49,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:59:49,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:59:49,817 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:59:49,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 08:59:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:59:49,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 08:59:49,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:59:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 35 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:59:52,289 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 08:59:55,545 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 35 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 08:59:55,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369101413] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 08:59:55,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 08:59:55,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 18, 18] total 45 [2024-12-02 08:59:55,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687503404] [2024-12-02 08:59:55,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 08:59:55,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-12-02 08:59:55,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:59:55,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-12-02 08:59:55,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1813, Unknown=0, NotChecked=0, Total=1980 [2024-12-02 08:59:55,547 INFO L87 Difference]: Start difference. First operand 24902 states and 31306 transitions. Second operand has 45 states, 45 states have (on average 7.155555555555556) internal successors, (322), 45 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:00:19,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:00:19,116 INFO L93 Difference]: Finished difference Result 53070 states and 65848 transitions. [2024-12-02 09:00:19,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2024-12-02 09:00:19,116 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 7.155555555555556) internal successors, (322), 45 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2024-12-02 09:00:19,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:00:19,145 INFO L225 Difference]: With dead ends: 53070 [2024-12-02 09:00:19,145 INFO L226 Difference]: Without dead ends: 37421 [2024-12-02 09:00:19,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8480 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=3936, Invalid=24120, Unknown=0, NotChecked=0, Total=28056 [2024-12-02 09:00:19,153 INFO L435 NwaCegarLoop]: 1620 mSDtfsCounter, 24692 mSDsluCounter, 25169 mSDsCounter, 0 mSdLazyCounter, 3722 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24692 SdHoareTripleChecker+Valid, 26789 SdHoareTripleChecker+Invalid, 3839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 3722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-12-02 09:00:19,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24692 Valid, 26789 Invalid, 3839 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 3722 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-12-02 09:00:19,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37421 states. [2024-12-02 09:00:20,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37421 to 29872. [2024-12-02 09:00:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29872 states, 29870 states have (on average 1.2367927686642115) internal successors, (36943), 29871 states have internal predecessors, (36943), 0 states have call successors, (0), 0 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 09:00:20,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29872 states to 29872 states and 36943 transitions. [2024-12-02 09:00:20,782 INFO L78 Accepts]: Start accepts. Automaton has 29872 states and 36943 transitions. Word has length 121 [2024-12-02 09:00:20,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:00:20,783 INFO L471 AbstractCegarLoop]: Abstraction has 29872 states and 36943 transitions. [2024-12-02 09:00:20,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 7.155555555555556) internal successors, (322), 45 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 09:00:20,783 INFO L276 IsEmpty]: Start isEmpty. Operand 29872 states and 36943 transitions. [2024-12-02 09:00:20,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 09:00:20,785 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:00:20,785 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] [2024-12-02 09:00:20,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 09:00:20,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 09:00:20,985 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:00:20,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:00:20,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1379830784, now seen corresponding path program 1 times [2024-12-02 09:00:20,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:00:20,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780417056] [2024-12-02 09:00:20,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:20,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:00:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:00:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 43 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:00:21,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:00:21,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780417056] [2024-12-02 09:00:21,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780417056] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:00:21,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451219019] [2024-12-02 09:00:21,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:00:21,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:00:21,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:00:21,690 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:00:21,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 09:00:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:00:21,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-12-02 09:00:21,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:00:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 20 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:00:23,473 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:00:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 16 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:00:27,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451219019] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:00:27,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:00:27,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 16] total 51 [2024-12-02 09:00:27,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357413793] [2024-12-02 09:00:27,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:00:27,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-12-02 09:00:27,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:00:27,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-12-02 09:00:27,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=2376, Unknown=0, NotChecked=0, Total=2652 [2024-12-02 09:00:27,005 INFO L87 Difference]: Start difference. First operand 29872 states and 36943 transitions. Second operand has 52 states, 52 states have (on average 6.711538461538462) internal successors, (349), 51 states have internal predecessors, (349), 0 states have call successors, (0), 0 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 09:01:04,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:01:04,526 INFO L93 Difference]: Finished difference Result 102427 states and 126017 transitions. [2024-12-02 09:01:04,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2024-12-02 09:01:04,527 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 6.711538461538462) internal successors, (349), 51 states have internal predecessors, (349), 0 states have call successors, (0), 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 121 [2024-12-02 09:01:04,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:01:04,585 INFO L225 Difference]: With dead ends: 102427 [2024-12-02 09:01:04,586 INFO L226 Difference]: Without dead ends: 86095 [2024-12-02 09:01:04,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27309 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=10464, Invalid=68216, Unknown=0, NotChecked=0, Total=78680 [2024-12-02 09:01:04,600 INFO L435 NwaCegarLoop]: 1652 mSDtfsCounter, 29901 mSDsluCounter, 35794 mSDsCounter, 0 mSdLazyCounter, 4556 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29901 SdHoareTripleChecker+Valid, 37446 SdHoareTripleChecker+Invalid, 4787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 4556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:01:04,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29901 Valid, 37446 Invalid, 4787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [231 Valid, 4556 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 09:01:04,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86095 states. [2024-12-02 09:01:08,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86095 to 65981. [2024-12-02 09:01:08,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65981 states, 65979 states have (on average 1.221903939132148) internal successors, (80620), 65980 states have internal predecessors, (80620), 0 states have call successors, (0), 0 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 09:01:08,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65981 states to 65981 states and 80620 transitions. [2024-12-02 09:01:08,592 INFO L78 Accepts]: Start accepts. Automaton has 65981 states and 80620 transitions. Word has length 121 [2024-12-02 09:01:08,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:01:08,593 INFO L471 AbstractCegarLoop]: Abstraction has 65981 states and 80620 transitions. [2024-12-02 09:01:08,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 6.711538461538462) internal successors, (349), 51 states have internal predecessors, (349), 0 states have call successors, (0), 0 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 09:01:08,593 INFO L276 IsEmpty]: Start isEmpty. Operand 65981 states and 80620 transitions. [2024-12-02 09:01:08,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-12-02 09:01:08,596 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:01:08,596 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] [2024-12-02 09:01:08,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 09:01:08,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:01:08,796 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:01:08,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:01:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1695257852, now seen corresponding path program 1 times [2024-12-02 09:01:08,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:01:08,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142309322] [2024-12-02 09:01:08,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:01:08,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:01:08,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:01:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 42 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:01:10,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:01:10,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142309322] [2024-12-02 09:01:10,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142309322] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:01:10,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220873318] [2024-12-02 09:01:10,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:01:10,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:01:10,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:01:10,290 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:01:10,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 09:01:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:01:10,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 09:01:10,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:01:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 20 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:01:11,129 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:01:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 16 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 09:01:13,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220873318] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:01:13,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:01:13,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 11, 11] total 45 [2024-12-02 09:01:13,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218601251] [2024-12-02 09:01:13,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:01:13,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 09:01:13,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:01:13,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 09:01:13,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1909, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 09:01:13,187 INFO L87 Difference]: Start difference. First operand 65981 states and 80620 transitions. Second operand has 46 states, 46 states have (on average 7.5) internal successors, (345), 45 states have internal predecessors, (345), 0 states have call successors, (0), 0 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 09:01:32,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:01:32,753 INFO L93 Difference]: Finished difference Result 126474 states and 152882 transitions. [2024-12-02 09:01:32,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-12-02 09:01:32,754 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 7.5) internal successors, (345), 45 states have internal predecessors, (345), 0 states have call successors, (0), 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 121 [2024-12-02 09:01:32,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:01:32,828 INFO L225 Difference]: With dead ends: 126474 [2024-12-02 09:01:32,828 INFO L226 Difference]: Without dead ends: 92598 [2024-12-02 09:01:32,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8932 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=3896, Invalid=25516, Unknown=0, NotChecked=0, Total=29412 [2024-12-02 09:01:32,849 INFO L435 NwaCegarLoop]: 1672 mSDtfsCounter, 24371 mSDsluCounter, 32272 mSDsCounter, 0 mSdLazyCounter, 5473 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24371 SdHoareTripleChecker+Valid, 33944 SdHoareTripleChecker+Invalid, 5566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 5473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:01:32,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24371 Valid, 33944 Invalid, 5566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 5473 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 09:01:32,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92598 states. [2024-12-02 09:01:36,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92598 to 54985. [2024-12-02 09:01:36,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54985 states, 54983 states have (on average 1.214338977502137) internal successors, (66768), 54984 states have internal predecessors, (66768), 0 states have call successors, (0), 0 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 09:01:36,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54985 states to 54985 states and 66768 transitions. [2024-12-02 09:01:36,761 INFO L78 Accepts]: Start accepts. Automaton has 54985 states and 66768 transitions. Word has length 121 [2024-12-02 09:01:36,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:01:36,761 INFO L471 AbstractCegarLoop]: Abstraction has 54985 states and 66768 transitions. [2024-12-02 09:01:36,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 7.5) internal successors, (345), 45 states have internal predecessors, (345), 0 states have call successors, (0), 0 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 09:01:36,761 INFO L276 IsEmpty]: Start isEmpty. Operand 54985 states and 66768 transitions. [2024-12-02 09:01:36,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 09:01:36,763 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:01:36,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:01:36,769 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 09:01:36,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-12-02 09:01:36,964 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:01:36,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:01:36,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1600056260, now seen corresponding path program 1 times [2024-12-02 09:01:36,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:01:36,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124448970] [2024-12-02 09:01:36,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:01:36,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:01:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:01:38,403 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 09:01:38,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:01:38,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124448970] [2024-12-02 09:01:38,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124448970] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:01:38,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829532750] [2024-12-02 09:01:38,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:01:38,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:01:38,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:01:38,405 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:01:38,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 09:01:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:01:38,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-12-02 09:01:38,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:01:43,231 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 09:01:43,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:01:51,451 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 09:01:51,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829532750] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:01:51,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:01:51,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 29, 29] total 81 [2024-12-02 09:01:51,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010666345] [2024-12-02 09:01:51,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:01:51,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2024-12-02 09:01:51,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:01:51,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2024-12-02 09:01:51,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=544, Invalid=5936, Unknown=0, NotChecked=0, Total=6480 [2024-12-02 09:01:51,453 INFO L87 Difference]: Start difference. First operand 54985 states and 66768 transitions. Second operand has 81 states, 81 states have (on average 4.333333333333333) internal successors, (351), 81 states have internal predecessors, (351), 0 states have call successors, (0), 0 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 09:04:58,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 09:04:58,341 INFO L93 Difference]: Finished difference Result 192463 states and 231941 transitions. [2024-12-02 09:04:58,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 469 states. [2024-12-02 09:04:58,341 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.333333333333333) internal successors, (351), 81 states have internal predecessors, (351), 0 states have call successors, (0), 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 122 [2024-12-02 09:04:58,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 09:04:58,479 INFO L225 Difference]: With dead ends: 192463 [2024-12-02 09:04:58,479 INFO L226 Difference]: Without dead ends: 177678 [2024-12-02 09:04:58,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 538 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122113 ImplicationChecksByTransitivity, 162.3s TimeCoverageRelationStatistics Valid=25912, Invalid=265148, Unknown=0, NotChecked=0, Total=291060 [2024-12-02 09:04:58,508 INFO L435 NwaCegarLoop]: 1745 mSDtfsCounter, 48645 mSDsluCounter, 42558 mSDsCounter, 0 mSdLazyCounter, 13213 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48645 SdHoareTripleChecker+Valid, 44303 SdHoareTripleChecker+Invalid, 13647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 13213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2024-12-02 09:04:58,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48645 Valid, 44303 Invalid, 13647 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [434 Valid, 13213 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2024-12-02 09:04:58,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177678 states. [2024-12-02 09:05:04,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177678 to 68802. [2024-12-02 09:05:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68802 states, 68800 states have (on average 1.2107558139534884) internal successors, (83300), 68801 states have internal predecessors, (83300), 0 states have call successors, (0), 0 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 09:05:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68802 states to 68802 states and 83300 transitions. [2024-12-02 09:05:04,698 INFO L78 Accepts]: Start accepts. Automaton has 68802 states and 83300 transitions. Word has length 122 [2024-12-02 09:05:04,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 09:05:04,698 INFO L471 AbstractCegarLoop]: Abstraction has 68802 states and 83300 transitions. [2024-12-02 09:05:04,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.333333333333333) internal successors, (351), 81 states have internal predecessors, (351), 0 states have call successors, (0), 0 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 09:05:04,699 INFO L276 IsEmpty]: Start isEmpty. Operand 68802 states and 83300 transitions. [2024-12-02 09:05:04,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 09:05:04,701 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 09:05:04,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:05:04,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-12-02 09:05:04,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-12-02 09:05:04,902 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 09:05:04,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 09:05:04,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1959084384, now seen corresponding path program 1 times [2024-12-02 09:05:04,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 09:05:04,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026878741] [2024-12-02 09:05:04,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:05:04,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 09:05:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:05:06,306 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 09:05:06,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 09:05:06,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026878741] [2024-12-02 09:05:06,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026878741] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 09:05:06,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961009648] [2024-12-02 09:05:06,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 09:05:06,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 09:05:06,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 09:05:06,308 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 09:05:06,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f983c77-904c-4e3a-9177-e6fb751ebce7/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 09:05:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 09:05:06,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-12-02 09:05:06,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 09:05:10,631 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 09:05:10,631 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 09:05:17,694 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 09:05:17,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961009648] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 09:05:17,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 09:05:17,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26, 24] total 72 [2024-12-02 09:05:17,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893062672] [2024-12-02 09:05:17,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 09:05:17,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2024-12-02 09:05:17,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 09:05:17,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2024-12-02 09:05:17,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=4729, Unknown=0, NotChecked=0, Total=5112 [2024-12-02 09:05:17,695 INFO L87 Difference]: Start difference. First operand 68802 states and 83300 transitions. Second operand has 72 states, 72 states have (on average 4.875) internal successors, (351), 72 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)