./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC --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 4ac9738018cdb6c628ad42533cfecc5c9af778919d271278199945a85d10a362 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:15:13,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:15:13,494 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:15:13,501 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:15:13,501 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:15:13,538 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:15:13,539 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:15:13,539 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:15:13,540 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:15:13,540 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:15:13,542 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:15:13,542 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:15:13,543 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:15:13,543 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:15:13,543 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:15:13,544 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:15:13,544 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:15:13,544 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:15:13,545 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:15:13,545 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:15:13,545 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:15:13,545 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:15:13,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:15:13,545 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:15:13,545 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:15:13,546 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:15:13,546 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:15:13,546 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:15:13,546 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:15:13,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:15:13,546 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:15:13,546 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:15:13,546 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:15:13,547 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:15:13,547 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:15:13,547 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:15:13,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:15:13,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:15:13,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:15:13,547 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:15:13,547 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:15:13,547 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:15:13,547 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:15:13,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:15:13,548 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:15:13,548 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:15:13,549 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:15:13,549 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:15:13,549 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_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC 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 -> 4ac9738018cdb6c628ad42533cfecc5c9af778919d271278199945a85d10a362 [2024-11-23 23:15:13,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:15:13,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:15:13,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:15:13,940 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:15:13,940 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:15:13,942 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-23 23:15:16,926 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/data/d4f12d451/bcc09575cc3141bd97f335b30b4f1c8e/FLAGa5209e44f [2024-11-23 23:15:17,319 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:15:17,322 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-23 23:15:17,341 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/data/d4f12d451/bcc09575cc3141bd97f335b30b4f1c8e/FLAGa5209e44f [2024-11-23 23:15:17,522 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/data/d4f12d451/bcc09575cc3141bd97f335b30b4f1c8e [2024-11-23 23:15:17,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:15:17,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:15:17,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:15:17,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:15:17,538 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:15:17,539 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:15:17" (1/1) ... [2024-11-23 23:15:17,542 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aa00dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:17, skipping insertion in model container [2024-11-23 23:15:17,542 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:15:17" (1/1) ... [2024-11-23 23:15:17,579 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:15:17,861 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_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2024-11-23 23:15:17,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:15:17,927 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:15:17,989 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_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4411,4424] [2024-11-23 23:15:18,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:15:18,053 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:15:18,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18 WrapperNode [2024-11-23 23:15:18,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:15:18,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:15:18,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:15:18,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:15:18,074 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18" (1/1) ... [2024-11-23 23:15:18,090 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18" (1/1) ... [2024-11-23 23:15:18,149 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 362 [2024-11-23 23:15:18,149 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:15:18,150 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:15:18,150 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:15:18,150 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:15:18,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18" (1/1) ... [2024-11-23 23:15:18,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18" (1/1) ... [2024-11-23 23:15:18,163 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18" (1/1) ... [2024-11-23 23:15:18,197 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:15:18,201 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18" (1/1) ... [2024-11-23 23:15:18,201 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18" (1/1) ... [2024-11-23 23:15:18,211 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18" (1/1) ... [2024-11-23 23:15:18,216 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18" (1/1) ... [2024-11-23 23:15:18,221 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18" (1/1) ... [2024-11-23 23:15:18,223 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18" (1/1) ... [2024-11-23 23:15:18,228 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18" (1/1) ... [2024-11-23 23:15:18,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:15:18,236 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:15:18,236 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:15:18,236 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:15:18,237 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18" (1/1) ... [2024-11-23 23:15:18,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:15:18,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:15:18,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:15:18,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:15:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:15:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:15:18,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:15:18,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:15:18,407 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:15:18,409 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:15:18,946 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-11-23 23:15:18,946 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:15:18,963 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:15:18,964 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 23:15:18,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:15:18 BoogieIcfgContainer [2024-11-23 23:15:18,964 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:15:18,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:15:18,969 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:15:18,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:15:18,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:15:17" (1/3) ... [2024-11-23 23:15:18,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8ade26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:15:18, skipping insertion in model container [2024-11-23 23:15:18,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:15:18" (2/3) ... [2024-11-23 23:15:18,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e8ade26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:15:18, skipping insertion in model container [2024-11-23 23:15:18,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:15:18" (3/3) ... [2024-11-23 23:15:18,979 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-23 23:15:18,996 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:15:18,998 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 87 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-23 23:15:19,071 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:15:19,085 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;@332139b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:15:19,085 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:15:19,091 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 85 states have (on average 1.6705882352941177) internal successors, (142), 86 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:19,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-23 23:15:19,099 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:19,099 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] [2024-11-23 23:15:19,100 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:19,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:19,107 INFO L85 PathProgramCache]: Analyzing trace with hash 716810707, now seen corresponding path program 1 times [2024-11-23 23:15:19,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:19,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218886747] [2024-11-23 23:15:19,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:19,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:19,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:19,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:19,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218886747] [2024-11-23 23:15:19,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218886747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:19,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:19,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:19,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383167822] [2024-11-23 23:15:19,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:19,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:19,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:19,604 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:19,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:19,606 INFO L87 Difference]: Start difference. First operand has 87 states, 85 states have (on average 1.6705882352941177) internal successors, (142), 86 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:19,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:19,686 INFO L93 Difference]: Finished difference Result 205 states and 324 transitions. [2024-11-23 23:15:19,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:19,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2024-11-23 23:15:19,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:19,698 INFO L225 Difference]: With dead ends: 205 [2024-11-23 23:15:19,698 INFO L226 Difference]: Without dead ends: 132 [2024-11-23 23:15:19,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:19,704 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 94 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:19,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 283 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:19,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-23 23:15:19,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2024-11-23 23:15:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.503875968992248) internal successors, (194), 129 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 194 transitions. [2024-11-23 23:15:19,746 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 194 transitions. Word has length 38 [2024-11-23 23:15:19,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:19,747 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 194 transitions. [2024-11-23 23:15:19,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 194 transitions. [2024-11-23 23:15:19,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-23 23:15:19,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:19,750 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] [2024-11-23 23:15:19,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:15:19,750 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:19,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:19,752 INFO L85 PathProgramCache]: Analyzing trace with hash -935293361, now seen corresponding path program 1 times [2024-11-23 23:15:19,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:19,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001238772] [2024-11-23 23:15:19,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:19,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:19,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:19,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001238772] [2024-11-23 23:15:19,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001238772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:19,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:19,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:19,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840320731] [2024-11-23 23:15:19,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:19,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:19,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:19,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:19,966 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:19,966 INFO L87 Difference]: Start difference. First operand 130 states and 194 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:20,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:20,008 INFO L93 Difference]: Finished difference Result 318 states and 490 transitions. [2024-11-23 23:15:20,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:20,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2024-11-23 23:15:20,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:20,011 INFO L225 Difference]: With dead ends: 318 [2024-11-23 23:15:20,011 INFO L226 Difference]: Without dead ends: 208 [2024-11-23 23:15:20,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:20,012 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 79 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:20,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 235 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:20,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-23 23:15:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 206. [2024-11-23 23:15:20,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 205 states have (on average 1.526829268292683) internal successors, (313), 205 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 313 transitions. [2024-11-23 23:15:20,038 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 313 transitions. Word has length 39 [2024-11-23 23:15:20,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:20,038 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 313 transitions. [2024-11-23 23:15:20,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:20,039 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 313 transitions. [2024-11-23 23:15:20,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-23 23:15:20,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:20,044 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] [2024-11-23 23:15:20,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:15:20,044 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:20,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:20,045 INFO L85 PathProgramCache]: Analyzing trace with hash 830312666, now seen corresponding path program 1 times [2024-11-23 23:15:20,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:20,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507021520] [2024-11-23 23:15:20,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:20,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:20,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:20,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:20,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507021520] [2024-11-23 23:15:20,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507021520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:20,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:20,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:15:20,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793859697] [2024-11-23 23:15:20,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:20,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:15:20,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:20,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:15:20,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:20,291 INFO L87 Difference]: Start difference. First operand 206 states and 313 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:20,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:20,417 INFO L93 Difference]: Finished difference Result 950 states and 1485 transitions. [2024-11-23 23:15:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:15:20,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2024-11-23 23:15:20,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:20,422 INFO L225 Difference]: With dead ends: 950 [2024-11-23 23:15:20,423 INFO L226 Difference]: Without dead ends: 764 [2024-11-23 23:15:20,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:15:20,425 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 501 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:20,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 676 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:15:20,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2024-11-23 23:15:20,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 390. [2024-11-23 23:15:20,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.5347043701799485) internal successors, (597), 389 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:20,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 597 transitions. [2024-11-23 23:15:20,498 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 597 transitions. Word has length 40 [2024-11-23 23:15:20,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:20,498 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 597 transitions. [2024-11-23 23:15:20,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:20,499 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 597 transitions. [2024-11-23 23:15:20,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-23 23:15:20,500 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:20,500 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] [2024-11-23 23:15:20,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:15:20,500 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:20,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:20,505 INFO L85 PathProgramCache]: Analyzing trace with hash -49567444, now seen corresponding path program 1 times [2024-11-23 23:15:20,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:20,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090348381] [2024-11-23 23:15:20,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:20,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:20,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:20,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090348381] [2024-11-23 23:15:20,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090348381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:20,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:20,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:15:20,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496576525] [2024-11-23 23:15:20,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:20,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:15:20,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:20,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:15:20,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:20,791 INFO L87 Difference]: Start difference. First operand 390 states and 597 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:20,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:20,898 INFO L93 Difference]: Finished difference Result 1348 states and 2080 transitions. [2024-11-23 23:15:20,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:15:20,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2024-11-23 23:15:20,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:20,907 INFO L225 Difference]: With dead ends: 1348 [2024-11-23 23:15:20,907 INFO L226 Difference]: Without dead ends: 978 [2024-11-23 23:15:20,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:20,912 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 275 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:20,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 439 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:15:20,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2024-11-23 23:15:20,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 974. [2024-11-23 23:15:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 973 states have (on average 1.5344295991778005) internal successors, (1493), 973 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:20,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1493 transitions. [2024-11-23 23:15:20,979 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1493 transitions. Word has length 41 [2024-11-23 23:15:20,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:20,979 INFO L471 AbstractCegarLoop]: Abstraction has 974 states and 1493 transitions. [2024-11-23 23:15:20,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:20,979 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1493 transitions. [2024-11-23 23:15:20,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-23 23:15:20,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:20,981 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] [2024-11-23 23:15:20,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:15:20,981 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:20,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:20,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1536012938, now seen corresponding path program 1 times [2024-11-23 23:15:20,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:20,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479886747] [2024-11-23 23:15:20,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:20,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:21,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:21,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479886747] [2024-11-23 23:15:21,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479886747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:21,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:21,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:21,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119886827] [2024-11-23 23:15:21,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:21,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:21,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:21,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:21,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:21,092 INFO L87 Difference]: Start difference. First operand 974 states and 1493 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:21,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:21,131 INFO L93 Difference]: Finished difference Result 2490 states and 3807 transitions. [2024-11-23 23:15:21,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:21,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2024-11-23 23:15:21,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:21,140 INFO L225 Difference]: With dead ends: 2490 [2024-11-23 23:15:21,141 INFO L226 Difference]: Without dead ends: 1536 [2024-11-23 23:15:21,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:21,143 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 86 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:21,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 275 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:21,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2024-11-23 23:15:21,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1534. [2024-11-23 23:15:21,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1533 states have (on average 1.5061969993476843) internal successors, (2309), 1533 states have internal predecessors, (2309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:21,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 2309 transitions. [2024-11-23 23:15:21,240 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 2309 transitions. Word has length 42 [2024-11-23 23:15:21,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:21,240 INFO L471 AbstractCegarLoop]: Abstraction has 1534 states and 2309 transitions. [2024-11-23 23:15:21,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:21,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 2309 transitions. [2024-11-23 23:15:21,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-23 23:15:21,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:21,242 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] [2024-11-23 23:15:21,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:15:21,242 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:21,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:21,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1650560821, now seen corresponding path program 1 times [2024-11-23 23:15:21,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:21,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606659958] [2024-11-23 23:15:21,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:21,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:21,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:21,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606659958] [2024-11-23 23:15:21,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606659958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:21,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:21,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:15:21,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908105354] [2024-11-23 23:15:21,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:21,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:15:21,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:21,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:15:21,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:21,425 INFO L87 Difference]: Start difference. First operand 1534 states and 2309 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:21,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:21,661 INFO L93 Difference]: Finished difference Result 4562 states and 6887 transitions. [2024-11-23 23:15:21,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:15:21,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-11-23 23:15:21,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:21,673 INFO L225 Difference]: With dead ends: 4562 [2024-11-23 23:15:21,673 INFO L226 Difference]: Without dead ends: 3048 [2024-11-23 23:15:21,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:15:21,679 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 523 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:21,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 137 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:15:21,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3048 states. [2024-11-23 23:15:21,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3048 to 3046. [2024-11-23 23:15:21,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 3045 states have (on average 1.4965517241379311) internal successors, (4557), 3045 states have internal predecessors, (4557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:21,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4557 transitions. [2024-11-23 23:15:21,759 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4557 transitions. Word has length 43 [2024-11-23 23:15:21,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:21,761 INFO L471 AbstractCegarLoop]: Abstraction has 3046 states and 4557 transitions. [2024-11-23 23:15:21,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:21,761 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4557 transitions. [2024-11-23 23:15:21,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-23 23:15:21,762 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:21,762 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] [2024-11-23 23:15:21,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:15:21,763 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:21,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:21,763 INFO L85 PathProgramCache]: Analyzing trace with hash 836148826, now seen corresponding path program 1 times [2024-11-23 23:15:21,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:21,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342767425] [2024-11-23 23:15:21,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:21,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:22,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:22,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342767425] [2024-11-23 23:15:22,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342767425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:22,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:22,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:15:22,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901935221] [2024-11-23 23:15:22,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:22,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:15:22,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:22,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:15:22,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:22,143 INFO L87 Difference]: Start difference. First operand 3046 states and 4557 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:22,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:22,195 INFO L93 Difference]: Finished difference Result 3240 states and 4846 transitions. [2024-11-23 23:15:22,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:15:22,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2024-11-23 23:15:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:22,207 INFO L225 Difference]: With dead ends: 3240 [2024-11-23 23:15:22,207 INFO L226 Difference]: Without dead ends: 3238 [2024-11-23 23:15:22,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:22,209 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 0 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 462 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 [2024-11-23 23:15:22,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 462 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:22,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3238 states. [2024-11-23 23:15:22,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3238 to 3238. [2024-11-23 23:15:22,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3238 states, 3237 states have (on average 1.4670991658943466) internal successors, (4749), 3237 states have internal predecessors, (4749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:22,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 4749 transitions. [2024-11-23 23:15:22,306 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 4749 transitions. Word has length 43 [2024-11-23 23:15:22,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:22,306 INFO L471 AbstractCegarLoop]: Abstraction has 3238 states and 4749 transitions. [2024-11-23 23:15:22,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:22,306 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 4749 transitions. [2024-11-23 23:15:22,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-23 23:15:22,307 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:22,307 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] [2024-11-23 23:15:22,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:15:22,307 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:22,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:22,308 INFO L85 PathProgramCache]: Analyzing trace with hash 161382844, now seen corresponding path program 1 times [2024-11-23 23:15:22,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:22,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283264311] [2024-11-23 23:15:22,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:22,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:22,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:22,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:22,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283264311] [2024-11-23 23:15:22,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283264311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:22,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:22,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:22,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700913503] [2024-11-23 23:15:22,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:22,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:22,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:22,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:22,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:22,445 INFO L87 Difference]: Start difference. First operand 3238 states and 4749 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:22,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:22,517 INFO L93 Difference]: Finished difference Result 7168 states and 10493 transitions. [2024-11-23 23:15:22,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:22,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-23 23:15:22,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:22,534 INFO L225 Difference]: With dead ends: 7168 [2024-11-23 23:15:22,534 INFO L226 Difference]: Without dead ends: 3950 [2024-11-23 23:15:22,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:22,538 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 66 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:22,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 214 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3950 states. [2024-11-23 23:15:22,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3950 to 3928. [2024-11-23 23:15:22,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 3927 states have (on average 1.452253628724217) internal successors, (5703), 3927 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:22,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 5703 transitions. [2024-11-23 23:15:22,661 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 5703 transitions. Word has length 44 [2024-11-23 23:15:22,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:22,662 INFO L471 AbstractCegarLoop]: Abstraction has 3928 states and 5703 transitions. [2024-11-23 23:15:22,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:22,662 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 5703 transitions. [2024-11-23 23:15:22,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 23:15:22,665 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:22,666 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] [2024-11-23 23:15:22,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:15:22,666 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:22,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:22,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1477612707, now seen corresponding path program 1 times [2024-11-23 23:15:22,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:22,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995806359] [2024-11-23 23:15:22,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:22,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:22,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:22,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995806359] [2024-11-23 23:15:22,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995806359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:22,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:22,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:22,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472408688] [2024-11-23 23:15:22,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:22,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:22,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:22,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:22,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:22,803 INFO L87 Difference]: Start difference. First operand 3928 states and 5703 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:22,876 INFO L93 Difference]: Finished difference Result 9069 states and 13163 transitions. [2024-11-23 23:15:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:22,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-23 23:15:22,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:22,896 INFO L225 Difference]: With dead ends: 9069 [2024-11-23 23:15:22,896 INFO L226 Difference]: Without dead ends: 6251 [2024-11-23 23:15:22,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:22,901 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 69 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:22,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 277 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6251 states. [2024-11-23 23:15:23,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6251 to 6249. [2024-11-23 23:15:23,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6249 states, 6248 states have (on average 1.4322983354673495) internal successors, (8949), 6248 states have internal predecessors, (8949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:23,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6249 states to 6249 states and 8949 transitions. [2024-11-23 23:15:23,068 INFO L78 Accepts]: Start accepts. Automaton has 6249 states and 8949 transitions. Word has length 63 [2024-11-23 23:15:23,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:23,068 INFO L471 AbstractCegarLoop]: Abstraction has 6249 states and 8949 transitions. [2024-11-23 23:15:23,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:23,069 INFO L276 IsEmpty]: Start isEmpty. Operand 6249 states and 8949 transitions. [2024-11-23 23:15:23,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 23:15:23,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:23,073 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:15:23,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:15:23,073 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:23,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:23,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1700716252, now seen corresponding path program 1 times [2024-11-23 23:15:23,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:23,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445510811] [2024-11-23 23:15:23,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:23,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:23,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:23,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445510811] [2024-11-23 23:15:23,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445510811] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:15:23,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906491726] [2024-11-23 23:15:23,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:23,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:15:23,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:15:23,570 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:15:23,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:15:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:23,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 23:15:23,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:15:24,518 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:24,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:15:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:25,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906491726] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:15:25,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:15:25,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 21 [2024-11-23 23:15:25,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359682940] [2024-11-23 23:15:25,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:15:25,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-23 23:15:25,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:25,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-23 23:15:25,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-23 23:15:25,106 INFO L87 Difference]: Start difference. First operand 6249 states and 8949 transitions. Second operand has 21 states, 21 states have (on average 8.571428571428571) internal successors, (180), 21 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:33,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:33,169 INFO L93 Difference]: Finished difference Result 37420 states and 53270 transitions. [2024-11-23 23:15:33,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2024-11-23 23:15:33,169 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.571428571428571) internal successors, (180), 21 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-23 23:15:33,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:33,246 INFO L225 Difference]: With dead ends: 37420 [2024-11-23 23:15:33,246 INFO L226 Difference]: Without dead ends: 31194 [2024-11-23 23:15:33,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5847 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=2929, Invalid=12571, Unknown=0, NotChecked=0, Total=15500 [2024-11-23 23:15:33,260 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 7999 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7999 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 2580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:33,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7999 Valid, 2136 Invalid, 2580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-23 23:15:33,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31194 states. [2024-11-23 23:15:33,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31194 to 22973. [2024-11-23 23:15:33,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22973 states, 22972 states have (on average 1.4057113007139126) internal successors, (32292), 22972 states have internal predecessors, (32292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:33,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22973 states to 22973 states and 32292 transitions. [2024-11-23 23:15:33,818 INFO L78 Accepts]: Start accepts. Automaton has 22973 states and 32292 transitions. Word has length 63 [2024-11-23 23:15:33,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:33,818 INFO L471 AbstractCegarLoop]: Abstraction has 22973 states and 32292 transitions. [2024-11-23 23:15:33,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.571428571428571) internal successors, (180), 21 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:33,819 INFO L276 IsEmpty]: Start isEmpty. Operand 22973 states and 32292 transitions. [2024-11-23 23:15:33,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 23:15:33,822 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:33,823 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:33,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:15:34,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 23:15:34,027 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:34,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:34,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1430287189, now seen corresponding path program 1 times [2024-11-23 23:15:34,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:34,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278589199] [2024-11-23 23:15:34,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:34,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:34,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:34,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:34,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278589199] [2024-11-23 23:15:34,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278589199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:34,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:34,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:34,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100186036] [2024-11-23 23:15:34,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:34,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:34,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:34,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:34,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:34,106 INFO L87 Difference]: Start difference. First operand 22973 states and 32292 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:34,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:34,275 INFO L93 Difference]: Finished difference Result 45035 states and 62928 transitions. [2024-11-23 23:15:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:34,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-23 23:15:34,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:34,330 INFO L225 Difference]: With dead ends: 45035 [2024-11-23 23:15:34,330 INFO L226 Difference]: Without dead ends: 30607 [2024-11-23 23:15:34,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:34,346 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 67 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:34,347 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 266 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:34,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30607 states. [2024-11-23 23:15:34,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30607 to 30605. [2024-11-23 23:15:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30605 states, 30604 states have (on average 1.3802770879623578) internal successors, (42242), 30604 states have internal predecessors, (42242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:34,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30605 states to 30605 states and 42242 transitions. [2024-11-23 23:15:34,908 INFO L78 Accepts]: Start accepts. Automaton has 30605 states and 42242 transitions. Word has length 64 [2024-11-23 23:15:34,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:34,908 INFO L471 AbstractCegarLoop]: Abstraction has 30605 states and 42242 transitions. [2024-11-23 23:15:34,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:34,909 INFO L276 IsEmpty]: Start isEmpty. Operand 30605 states and 42242 transitions. [2024-11-23 23:15:34,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 23:15:34,913 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:34,913 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:34,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:15:34,913 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:34,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:34,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1004794437, now seen corresponding path program 1 times [2024-11-23 23:15:34,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:34,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774533921] [2024-11-23 23:15:34,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:34,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:34,994 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:34,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774533921] [2024-11-23 23:15:34,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774533921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:34,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:34,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:34,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908863094] [2024-11-23 23:15:34,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:34,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:34,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:34,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:34,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:34,996 INFO L87 Difference]: Start difference. First operand 30605 states and 42242 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:35,118 INFO L93 Difference]: Finished difference Result 46532 states and 64148 transitions. [2024-11-23 23:15:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:35,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-23 23:15:35,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:35,167 INFO L225 Difference]: With dead ends: 46532 [2024-11-23 23:15:35,167 INFO L226 Difference]: Without dead ends: 30607 [2024-11-23 23:15:35,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:35,184 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 64 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:35,184 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 252 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:35,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30607 states. [2024-11-23 23:15:35,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30607 to 29301. [2024-11-23 23:15:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29301 states, 29300 states have (on average 1.3714334470989762) internal successors, (40183), 29300 states have internal predecessors, (40183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:35,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29301 states to 29301 states and 40183 transitions. [2024-11-23 23:15:35,901 INFO L78 Accepts]: Start accepts. Automaton has 29301 states and 40183 transitions. Word has length 64 [2024-11-23 23:15:35,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:35,902 INFO L471 AbstractCegarLoop]: Abstraction has 29301 states and 40183 transitions. [2024-11-23 23:15:35,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:35,902 INFO L276 IsEmpty]: Start isEmpty. Operand 29301 states and 40183 transitions. [2024-11-23 23:15:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 23:15:35,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:35,907 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:35,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:15:35,907 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:35,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1956303618, now seen corresponding path program 1 times [2024-11-23 23:15:35,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:35,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447206299] [2024-11-23 23:15:35,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:35,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:36,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:15:36,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:36,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447206299] [2024-11-23 23:15:36,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447206299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:36,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:36,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:15:36,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109672114] [2024-11-23 23:15:36,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:36,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:15:36,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:36,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:15:36,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:36,087 INFO L87 Difference]: Start difference. First operand 29301 states and 40183 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:36,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:36,320 INFO L93 Difference]: Finished difference Result 55964 states and 77291 transitions. [2024-11-23 23:15:36,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:15:36,321 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 64 [2024-11-23 23:15:36,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:36,419 INFO L225 Difference]: With dead ends: 55964 [2024-11-23 23:15:36,419 INFO L226 Difference]: Without dead ends: 44458 [2024-11-23 23:15:36,437 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:15:36,439 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 346 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:36,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 582 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44458 states. [2024-11-23 23:15:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44458 to 39200. [2024-11-23 23:15:37,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39200 states, 39199 states have (on average 1.366335875915202) internal successors, (53559), 39199 states have internal predecessors, (53559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:37,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39200 states to 39200 states and 53559 transitions. [2024-11-23 23:15:37,202 INFO L78 Accepts]: Start accepts. Automaton has 39200 states and 53559 transitions. Word has length 64 [2024-11-23 23:15:37,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:37,203 INFO L471 AbstractCegarLoop]: Abstraction has 39200 states and 53559 transitions. [2024-11-23 23:15:37,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:37,203 INFO L276 IsEmpty]: Start isEmpty. Operand 39200 states and 53559 transitions. [2024-11-23 23:15:37,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 23:15:37,207 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:37,207 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:37,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:15:37,207 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:37,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash 79620841, now seen corresponding path program 1 times [2024-11-23 23:15:37,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:37,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814478343] [2024-11-23 23:15:37,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:37,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:37,268 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:37,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:37,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814478343] [2024-11-23 23:15:37,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814478343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:37,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:37,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:15:37,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561010122] [2024-11-23 23:15:37,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:37,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:15:37,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:37,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:15:37,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:37,270 INFO L87 Difference]: Start difference. First operand 39200 states and 53559 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:37,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:37,587 INFO L93 Difference]: Finished difference Result 67982 states and 92281 transitions. [2024-11-23 23:15:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:15:37,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-23 23:15:37,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:37,682 INFO L225 Difference]: With dead ends: 67982 [2024-11-23 23:15:37,682 INFO L226 Difference]: Without dead ends: 40501 [2024-11-23 23:15:37,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:15:37,701 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 68 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:37,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 270 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:37,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40501 states. [2024-11-23 23:15:38,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40501 to 39243. [2024-11-23 23:15:38,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39243 states, 39242 states have (on average 1.3467203506447174) internal successors, (52848), 39242 states have internal predecessors, (52848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:38,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39243 states to 39243 states and 52848 transitions. [2024-11-23 23:15:38,478 INFO L78 Accepts]: Start accepts. Automaton has 39243 states and 52848 transitions. Word has length 64 [2024-11-23 23:15:38,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:38,478 INFO L471 AbstractCegarLoop]: Abstraction has 39243 states and 52848 transitions. [2024-11-23 23:15:38,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:38,478 INFO L276 IsEmpty]: Start isEmpty. Operand 39243 states and 52848 transitions. [2024-11-23 23:15:38,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-23 23:15:38,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:38,481 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:38,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:15:38,481 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:38,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:38,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1706388265, now seen corresponding path program 1 times [2024-11-23 23:15:38,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:38,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354782394] [2024-11-23 23:15:38,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:38,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:15:38,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:38,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354782394] [2024-11-23 23:15:38,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354782394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:38,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:38,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:15:38,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527361767] [2024-11-23 23:15:38,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:38,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:15:38,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:38,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:15:38,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:38,594 INFO L87 Difference]: Start difference. First operand 39243 states and 52848 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:38,894 INFO L93 Difference]: Finished difference Result 59638 states and 81024 transitions. [2024-11-23 23:15:38,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:15:38,894 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-23 23:15:38,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:38,971 INFO L225 Difference]: With dead ends: 59638 [2024-11-23 23:15:38,971 INFO L226 Difference]: Without dead ends: 51916 [2024-11-23 23:15:38,982 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:15:38,983 INFO L435 NwaCegarLoop]: 213 mSDtfsCounter, 355 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:38,983 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 557 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:39,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51916 states. [2024-11-23 23:15:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51916 to 46667. [2024-11-23 23:15:39,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46667 states, 46666 states have (on average 1.3462478035400505) internal successors, (62824), 46666 states have internal predecessors, (62824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46667 states to 46667 states and 62824 transitions. [2024-11-23 23:15:39,612 INFO L78 Accepts]: Start accepts. Automaton has 46667 states and 62824 transitions. Word has length 64 [2024-11-23 23:15:39,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:39,612 INFO L471 AbstractCegarLoop]: Abstraction has 46667 states and 62824 transitions. [2024-11-23 23:15:39,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:39,612 INFO L276 IsEmpty]: Start isEmpty. Operand 46667 states and 62824 transitions. [2024-11-23 23:15:39,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-23 23:15:39,615 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:39,615 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:39,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:15:39,615 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:39,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:39,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1607670003, now seen corresponding path program 1 times [2024-11-23 23:15:39,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:39,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928003465] [2024-11-23 23:15:39,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:39,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 23:15:39,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:39,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928003465] [2024-11-23 23:15:39,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928003465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:39,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:39,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:15:39,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743212668] [2024-11-23 23:15:39,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:39,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:15:39,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:39,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:15:39,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:39,760 INFO L87 Difference]: Start difference. First operand 46667 states and 62824 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:40,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:40,029 INFO L93 Difference]: Finished difference Result 69915 states and 94824 transitions. [2024-11-23 23:15:40,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:15:40,030 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 [2024-11-23 23:15:40,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:40,106 INFO L225 Difference]: With dead ends: 69915 [2024-11-23 23:15:40,106 INFO L226 Difference]: Without dead ends: 59462 [2024-11-23 23:15:40,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:15:40,128 INFO L435 NwaCegarLoop]: 210 mSDtfsCounter, 338 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:40,129 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 585 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:15:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59462 states. [2024-11-23 23:15:41,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59462 to 54200. [2024-11-23 23:15:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54200 states, 54199 states have (on average 1.343714828686876) internal successors, (72828), 54199 states have internal predecessors, (72828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:41,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54200 states to 54200 states and 72828 transitions. [2024-11-23 23:15:41,201 INFO L78 Accepts]: Start accepts. Automaton has 54200 states and 72828 transitions. Word has length 65 [2024-11-23 23:15:41,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:41,201 INFO L471 AbstractCegarLoop]: Abstraction has 54200 states and 72828 transitions. [2024-11-23 23:15:41,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:41,202 INFO L276 IsEmpty]: Start isEmpty. Operand 54200 states and 72828 transitions. [2024-11-23 23:15:41,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-23 23:15:41,204 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:41,204 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:15:41,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:15:41,204 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:41,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:41,204 INFO L85 PathProgramCache]: Analyzing trace with hash -292012416, now seen corresponding path program 1 times [2024-11-23 23:15:41,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:41,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869111058] [2024-11-23 23:15:41,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:41,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:15:41,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:41,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869111058] [2024-11-23 23:15:41,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869111058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:41,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:41,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:15:41,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418390080] [2024-11-23 23:15:41,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:41,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:15:41,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:41,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:15:41,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:41,300 INFO L87 Difference]: Start difference. First operand 54200 states and 72828 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:41,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:41,711 INFO L93 Difference]: Finished difference Result 130754 states and 175354 transitions. [2024-11-23 23:15:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:15:41,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 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 69 [2024-11-23 23:15:41,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:41,822 INFO L225 Difference]: With dead ends: 130754 [2024-11-23 23:15:41,822 INFO L226 Difference]: Without dead ends: 76614 [2024-11-23 23:15:41,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:15:41,861 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 483 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:41,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 141 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:15:41,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76614 states. [2024-11-23 23:15:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76614 to 76146. [2024-11-23 23:15:43,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76146 states, 76145 states have (on average 1.3291089368967102) internal successors, (101205), 76145 states have internal predecessors, (101205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:43,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76146 states to 76146 states and 101205 transitions. [2024-11-23 23:15:43,310 INFO L78 Accepts]: Start accepts. Automaton has 76146 states and 101205 transitions. Word has length 69 [2024-11-23 23:15:43,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:43,310 INFO L471 AbstractCegarLoop]: Abstraction has 76146 states and 101205 transitions. [2024-11-23 23:15:43,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:43,310 INFO L276 IsEmpty]: Start isEmpty. Operand 76146 states and 101205 transitions. [2024-11-23 23:15:43,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-23 23:15:43,313 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:43,314 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:15:43,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:15:43,314 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:43,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:43,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1359557829, now seen corresponding path program 1 times [2024-11-23 23:15:43,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:43,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706372074] [2024-11-23 23:15:43,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:43,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:43,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:43,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:43,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706372074] [2024-11-23 23:15:43,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706372074] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:15:43,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592846148] [2024-11-23 23:15:43,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:43,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:15:43,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:15:43,480 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:15:43,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:15:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:43,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:15:43,613 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:15:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:43,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:15:44,029 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:44,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592846148] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:15:44,029 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:15:44,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-23 23:15:44,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667585307] [2024-11-23 23:15:44,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:15:44,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:15:44,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:44,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:15:44,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:15:44,032 INFO L87 Difference]: Start difference. First operand 76146 states and 101205 transitions. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:44,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:44,676 INFO L93 Difference]: Finished difference Result 135885 states and 180394 transitions. [2024-11-23 23:15:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:15:44,677 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-23 23:15:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:45,139 INFO L225 Difference]: With dead ends: 135885 [2024-11-23 23:15:45,139 INFO L226 Difference]: Without dead ends: 91936 [2024-11-23 23:15:45,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-23 23:15:45,156 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 550 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:45,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 238 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:15:45,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91936 states. [2024-11-23 23:15:46,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91936 to 78144. [2024-11-23 23:15:46,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78144 states, 78143 states have (on average 1.321948223129391) internal successors, (103301), 78143 states have internal predecessors, (103301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:46,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78144 states to 78144 states and 103301 transitions. [2024-11-23 23:15:46,140 INFO L78 Accepts]: Start accepts. Automaton has 78144 states and 103301 transitions. Word has length 69 [2024-11-23 23:15:46,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:46,140 INFO L471 AbstractCegarLoop]: Abstraction has 78144 states and 103301 transitions. [2024-11-23 23:15:46,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:46,140 INFO L276 IsEmpty]: Start isEmpty. Operand 78144 states and 103301 transitions. [2024-11-23 23:15:46,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-23 23:15:46,142 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:46,142 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:15:46,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:15:46,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 23:15:46,343 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:46,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:46,343 INFO L85 PathProgramCache]: Analyzing trace with hash -2115524128, now seen corresponding path program 1 times [2024-11-23 23:15:46,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:46,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657894222] [2024-11-23 23:15:46,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:46,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 23:15:46,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:46,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657894222] [2024-11-23 23:15:46,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657894222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:15:46,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:15:46,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:15:46,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081160902] [2024-11-23 23:15:46,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:15:46,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:15:46,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:46,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:15:46,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:15:46,429 INFO L87 Difference]: Start difference. First operand 78144 states and 103301 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:46,853 INFO L93 Difference]: Finished difference Result 178048 states and 235042 transitions. [2024-11-23 23:15:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:15:46,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-23 23:15:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:46,938 INFO L225 Difference]: With dead ends: 178048 [2024-11-23 23:15:46,938 INFO L226 Difference]: Without dead ends: 100083 [2024-11-23 23:15:46,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:15:46,976 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 467 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 467 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:46,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [467 Valid, 149 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:15:47,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100083 states. [2024-11-23 23:15:48,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100083 to 99678. [2024-11-23 23:15:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99678 states, 99677 states have (on average 1.3070618096451538) internal successors, (130284), 99677 states have internal predecessors, (130284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:48,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99678 states to 99678 states and 130284 transitions. [2024-11-23 23:15:48,614 INFO L78 Accepts]: Start accepts. Automaton has 99678 states and 130284 transitions. Word has length 69 [2024-11-23 23:15:48,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:48,614 INFO L471 AbstractCegarLoop]: Abstraction has 99678 states and 130284 transitions. [2024-11-23 23:15:48,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:48,614 INFO L276 IsEmpty]: Start isEmpty. Operand 99678 states and 130284 transitions. [2024-11-23 23:15:48,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-23 23:15:48,620 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:48,620 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:15:48,620 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 23:15:48,621 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:48,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:48,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2022495301, now seen corresponding path program 1 times [2024-11-23 23:15:48,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:48,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000834057] [2024-11-23 23:15:48,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:48,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:48,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:48,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000834057] [2024-11-23 23:15:48,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000834057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:15:48,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631623257] [2024-11-23 23:15:48,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:48,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:15:48,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:15:48,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:15:48,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:15:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:48,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:15:48,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:15:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:49,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:15:49,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:49,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631623257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:15:49,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:15:49,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-23 23:15:49,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861629081] [2024-11-23 23:15:49,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:15:49,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:15:49,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:49,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:15:49,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:15:49,342 INFO L87 Difference]: Start difference. First operand 99678 states and 130284 transitions. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:50,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:50,602 INFO L93 Difference]: Finished difference Result 197431 states and 258863 transitions. [2024-11-23 23:15:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:15:50,603 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2024-11-23 23:15:50,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:50,699 INFO L225 Difference]: With dead ends: 197431 [2024-11-23 23:15:50,699 INFO L226 Difference]: Without dead ends: 120624 [2024-11-23 23:15:50,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:15:50,723 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 1370 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:50,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 364 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:15:50,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120624 states. [2024-11-23 23:15:51,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120624 to 103239. [2024-11-23 23:15:51,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103239 states, 103238 states have (on average 1.3046358898855073) internal successors, (134688), 103238 states have internal predecessors, (134688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103239 states to 103239 states and 134688 transitions. [2024-11-23 23:15:52,076 INFO L78 Accepts]: Start accepts. Automaton has 103239 states and 134688 transitions. Word has length 69 [2024-11-23 23:15:52,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:52,076 INFO L471 AbstractCegarLoop]: Abstraction has 103239 states and 134688 transitions. [2024-11-23 23:15:52,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 103239 states and 134688 transitions. [2024-11-23 23:15:52,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-23 23:15:52,082 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:52,082 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:15:52,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 23:15:52,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:15:52,285 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:52,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:52,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1494386851, now seen corresponding path program 1 times [2024-11-23 23:15:52,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:52,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537167117] [2024-11-23 23:15:52,286 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:52,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:52,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:52,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537167117] [2024-11-23 23:15:52,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537167117] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:15:52,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900432158] [2024-11-23 23:15:52,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:52,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:15:52,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:15:52,427 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:15:52,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:15:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:52,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:15:52,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:15:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:52,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:15:52,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:52,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900432158] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:15:52,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:15:52,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-23 23:15:52,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476907450] [2024-11-23 23:15:52,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:15:52,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:15:52,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:52,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:15:52,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:15:52,939 INFO L87 Difference]: Start difference. First operand 103239 states and 134688 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:53,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:15:53,861 INFO L93 Difference]: Finished difference Result 205811 states and 269311 transitions. [2024-11-23 23:15:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:15:53,861 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 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 [2024-11-23 23:15:53,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:15:53,991 INFO L225 Difference]: With dead ends: 205811 [2024-11-23 23:15:53,991 INFO L226 Difference]: Without dead ends: 152953 [2024-11-23 23:15:54,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 130 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:15:54,023 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 588 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:15:54,023 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 280 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:15:54,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152953 states. [2024-11-23 23:15:55,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152953 to 116574. [2024-11-23 23:15:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116574 states, 116573 states have (on average 1.3047618230636597) internal successors, (152100), 116573 states have internal predecessors, (152100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:55,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116574 states to 116574 states and 152100 transitions. [2024-11-23 23:15:55,863 INFO L78 Accepts]: Start accepts. Automaton has 116574 states and 152100 transitions. Word has length 70 [2024-11-23 23:15:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:15:55,864 INFO L471 AbstractCegarLoop]: Abstraction has 116574 states and 152100 transitions. [2024-11-23 23:15:55,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 10 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:15:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 116574 states and 152100 transitions. [2024-11-23 23:15:55,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-23 23:15:55,868 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:15:55,868 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-23 23:15:55,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 23:15:56,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:15:56,069 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:15:56,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:15:56,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1653225065, now seen corresponding path program 1 times [2024-11-23 23:15:56,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:15:56,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953413073] [2024-11-23 23:15:56,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:56,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:15:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:56,852 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:56,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:15:56,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953413073] [2024-11-23 23:15:56,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953413073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:15:56,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206038876] [2024-11-23 23:15:56,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:15:56,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:15:56,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:15:56,855 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:15:56,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e29bcbb5-b161-4540-b94f-ebdd67dca1f3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:15:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:15:56,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-23 23:15:56,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:15:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:58,337 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:15:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:15:59,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206038876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:15:59,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:15:59,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-23 23:15:59,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339400084] [2024-11-23 23:15:59,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:15:59,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-23 23:15:59,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:15:59,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-23 23:15:59,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2024-11-23 23:15:59,220 INFO L87 Difference]: Start difference. First operand 116574 states and 152100 transitions. Second operand has 32 states, 32 states have (on average 6.125) internal successors, (196), 32 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:17:08,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:17:08,967 INFO L93 Difference]: Finished difference Result 1703707 states and 2221645 transitions. [2024-11-23 23:17:08,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 841 states. [2024-11-23 23:17:08,967 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.125) internal successors, (196), 32 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2024-11-23 23:17:08,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:17:11,955 INFO L225 Difference]: With dead ends: 1703707 [2024-11-23 23:17:11,955 INFO L226 Difference]: Without dead ends: 1588265 [2024-11-23 23:17:12,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 989 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 869 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377791 ImplicationChecksByTransitivity, 55.1s TimeCoverageRelationStatistics Valid=61970, Invalid=695800, Unknown=0, NotChecked=0, Total=757770 [2024-11-23 23:17:12,197 INFO L435 NwaCegarLoop]: 295 mSDtfsCounter, 33058 mSDsluCounter, 6237 mSDsCounter, 0 mSdLazyCounter, 9125 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33058 SdHoareTripleChecker+Valid, 6532 SdHoareTripleChecker+Invalid, 9829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 9125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:17:12,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33058 Valid, 6532 Invalid, 9829 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [704 Valid, 9125 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-23 23:17:12,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588265 states.